PI33XX

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Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 42

Technical content

Datasheet sections

Features

 High Efficiency ZVS-Buck Topology  Wide input voltage range of 8V to 36V  Very-Fast transient response  High accuracy pre-trimmed output voltage  User adjustable soft-start & tracking  Power-up into pre-biased load (select versions)  Parallel capable with single wire current sharing  Input Over/Under Voltage Lockout (OVLO/UVLO)  Output Overvoltage Protection (OVP)  Over Temperature Protection (OTP)  Fast and slow current limits  -40°C to 125°C operating range (TJ)  Optional I2C functionality & programmability:  Vout margining  Fault reporting  Enable and SYNCI pin polarity  Phase delay (interleaving multiple regulators)

Applications

 High efficiency systems  Computing, Communications, Industrial, Automotive Equipment  High voltage battery operation

Package Information

 10mm x 14mm x 2.6mm LGA SiP I2C is a trademark of NXP Semiconductors

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 3 of 42 PI33XX-X0 Order Information Cool-Power Output Range Iout Max Package Transport Media Set Range PI3311-00-LGIZ 1.0V 1.0 to 1.4V 10A 10mm x 14mm 123-pin LGA TRAY PI3318-00-LGIZ 1.8V 1.4 to 2.0V 10A 10mm x 14mm 123-pin LGA TRAY PI3312-00-LGIZ 2.5V 2.0V to 3.1V 10A 10mm x 14mm 123-pin LGA TRAY PI3301-00-LGIZ 3.3V 2.3 to 4.1V 10A 10mm x 14mm 123-pin LGA TRAY PI3302-00-LGIZ 5.0V 3.3 to 6.5V 10A 10mm x 14mm 123-pin LGA TRAY PI3303-00-LGIZ 12V 6.5 to 13.0V 8A 10mm x 14mm 123-pin LGA TRAY PI3305-00-LGIZ 15V 10.0 to 16.0V 8A 10mm x 14mm 123-pin LGA TRAY Higher Current Versions (Refer to PI33XX-X1-LGIZ Datasheet) PI3311-01-LGIZ 1.0V 1.0 to 1.4V 15A 10mm x 14mm 123-pin LGA TRAY PI3318-01-LGIZ 1.8V 1.4 to 2.0V 15A 10mm x 14mm 123-pin LGA TRAY PI3312-01-LGIZ 2.5V 2.0 to 3.1V 15A 10mm x 14mm 123-pin LGA TRAY PI3301-01-LGIZ 3.3V 2.3 to 4.1V 15A 10mm x 14mm 123-pin LGA TRAY I2C Functionality & Programmability PI3311-20-LGIZ 1.0V 1.0 to 1.4V 10A 10mm x 14mm 123-pin LGA TRAY PI3318-20-LGIZ 1.8V 1.0 to 1.4V 10A 10mm x 14mm 123-pin LGA TRAY PI3312-20-LGIZ 2.5V 2.0 to 3.1V 10A 10mm x 14mm 123-pin LGA TRAY PI3301-20-LGIZ 3.3V 2.3 to 4.1V 10A 10mm x 14mm 123-pin LGA TRAY PI3302-20-LGIZ 5.0V 3.30 to 6.5V 10A 10mm x 14mm 123-pin LGA TRAY PI3303-20-LGIZ 12V 6.5 to 13.0V 8A 10mm x 14mm 123-pin LGA TRAY PI3305-20-LGIZ 15V 10.0 to 16.0V 8A 10mm x 14mm 123-pin LGA TRAY PI3311-21-LGIZ 1.0V 1.0 to 1.4V 15A 10mm x 14mm 123-pin LGA TRAY PI3318-21-LGIZ 1.8V 1.4 to 2.0V 15A 10mm x 14mm 123-pin LGA TRAY PI3312-21-LGIZ 2.5V 2.0 to 3.1V 15A 10mm x 14mm 123-pin LGA TRAY PI3301-21-LGIZ 3.3V 2.3 to 4.1V 15A 10mm x 14mm 123-pin LGA TRAY

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 4 of 42 PI33XX-X0 PGD EAO EN REM VS1 Block 4 VIN Block 3 PGND Block 2 SYNCI SYNCO NC SGND ADJ TRK SDA SCL ADR0 ADR1 K J H G F E D C B A 13125431 142 109876 11 SGND Block 1 VOUT Block 5 NC Pin Description Name Number Description SGND Block 1 Signal ground: Internal logic ground for EA, TRK, SYNCI, SYNCO, ADJ and I2C (options) communication returns. SGND and PGND are star connected within the regulator package. PGND Block 2 Power ground: VIN and VOUT power returns VIN Block 3 Input voltage: and sense for UVLO, OVLO and feed forward ramp VOUT Block 5 Output voltage: and sense for power switches and feed-forward ramp VS1 Block 4 Switching node: and ZVS sense for power switches PGD A1 Parallel Good: Used for parallel timing management intended for lead regulator. EAO A2 Error amp output: External connection for additional compensation and current sharing. EN A3 Enable Input: Regulator enable control. Asserted high or left floating – regulator enabled; Asserted low, regulator output disabled. Polarity is programmable via I2C interface. REM A5 Remote Sense: High side connection. Connect to output regulation point. ADJ B1 Adjust input: An external resistor may be connected between ADJ pin and SGND or VOUT to trim the output voltage up or down. TRK C1 Soft-start and track input: An external capacitor may be connected between TRK pin and SGND to decrease the rate of rise during soft-start. NC K3, A4 No Connect: Leave pins floating. SYNCO K4 Synchronization output: Outputs a low signal for ½ of the minimum period for synchronization of other converters. SYNCI K5 Synchronization input: Synchronize to the falling edge of external clock frequency. SYNCI is a high impedance digital input node and should always be connected to SGND when not in use. SDA D1 Data Line: Connect to SGND for PI33XX-10 and -11. For use with PI33XX-20 and -21 only. SCL E1 Clock Line: Connect to SGND for PI33XX-10 and -11. For use with PI33XX-20 and -21 only. ADR1 H1 Tri-state Address : No connect for PI33XX-10 and -11. For use with PI33XX-20 and -21 only. ADR0 G1 Tri-state Address : No connect for PI33XX-10 and -11. For use with PI33XX-20 and -21 only. Package Pin-Out Block 1: B2-4, C2-4, D2-3, E2-3, F1-3, G2-3, H2-3, J1-3, K1-2 Block 3: G12-14, H12-14, J12-14, K12-14 Block 4: A12-14, B12-14, C12-14, D12-14, E12-14, Block 5: A6-7, B6-7, C6-7, D6-7 123-Lead LGA (10mm x 14mm) Top view

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 5 of 42 PI33XX-X0 Absolute Maximum Ratings Notes: At 25°C ambient temperature. All voltage nodes are referenced to PGND. VIN -0.7V to 36V VS1 -0.7 to 36V, -4V for 5ns VOUT See relevant product section SGND 100mA PGD, SYNCO, SYNCI, EN, EAO, ADJ, TRK, ADR1, ADR2, SCL, SDA, REM -0.3V to 5.5V / 5mA Storage Temperature -65°C to 150°C Operating Junction Temperature -40°C to 125°C Soldering Temperature for 20 seconds 260°C ESD Rating 2kV HBM Figure 1: Simplified Block Diagram (I2C pins SCL, SDA, ADR0, and ADR1 only active for PI33XX-20 and PI33XX-21 versions) VIN PGND SGND SYNCO PGD Q1 Q2 ADR0 SDA VCC ADR1 EN SYNCI TRK EAO ADJ VS1 Power Control InterfaceMemory VOUT REM SCL Vout ZVS Control

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 6 of 42 PI33XX-X0 PI3311-X0 (1.0 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=125nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Input Specifications Input Voltage VIN_DC 8 24 36 V Minimum 1mA load required Input Current IIN_DC 476 mA Vin = 24V, TC = 25°C, Iout=10A Input Current At Output Short (fault condition duty cycle) IIN_Short 20 mA Input Quiescent Current IQ_VIN 2 2.5 mA Disabled Enabled (no load) Input Voltage Slew Rate VIN_SR 1 V/μs Output Specifications Output Voltage Total Regulation VOUT_DC 0.987 1.0 1.013 V Note 2. Output Voltage Trim Range VOUT_DC 1.0 1.4 V Note 3. Line Regulation ∆VOUT(∆VIN) 0.1 % @25°C, 8V<Vin<36V Load Regulation ∆VOUT(∆IOUT) 0.1 % @25°C, 0.5A<Iout<10A Output Voltage Ripple VOUT_AC 20 mVp-p Iout=5A, Cout=8x100μF, 20MHz BW Note 4. Continuous Output Current Range IOUT_DC 10 A Note 5. Min 1mA load required. Current Limit IOUT_CL 12 A Protection UVLO Start Threshold VUVLO_START 7.20 7.60 8.00 V UVLO Stop Threshold VUVLO_STOP 6.90 7.25 7.60 V UVLO Hysteresis VUVLO_HYS 4 5 6 % OVLO Threshold VOVLO 37 38.4 V OVLO Hysteresis VOVLO_HYS 0.77 V UVLO/OVLO Fault Delay Time tf_DLY 128 Cycles Number of the switching frequency cycles UVLO/OVLO Response Time tf 500 ns +1% overdrive Output Over Voltage Protection VOVP 20 % Above VOUT Over-Temperature Fault Threshold TOTP 130 135 140 °C Over-Temperature Restart Hysteresis TOTP_HYS 30 °C Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 7 of 42 PI33XX-X0 PI3311-X0 (1.0 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=125nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Timing Switching Frequency fS 500 kHz Note 6. Fault Restart Delay tFR_DLY 30 ms Sync In (SYNCI) Synchronization Frequency Range ∆fSYNCI 50 110 % Relative to set switching frequency. Note 3. SYNCI Threshold VSYNCI 2.5 V Sync Out (SYNCO) SYNCO High VSYNCO_HI 4.5 V Source 1mA SYNCO Low VSYNCO_LO 0.5 V Sink 1mA SYNCO Rise Time tSYNCO_RT 10 20 ns 20pF load SYNCO Fall Time tSYNCO_FT 10 20 ns 20pF load Soft Start And Tracking TRK Active Range (Nominal) VTRK 0 1 V TRK Enable Threshold VTRK_OV 20 40 60 mV Charge Current (Soft – Start) ITRK -70 -50 -30 µA Discharge Current (Fault) ITRK_DIS 6.8 mA Soft-Start Time tSS 2.2 2.6 ms CTRK = 0 Enable High Threshold VEN_HI 0.9 1 1.1 V Low Threshold VEN_LO 0.7 0.8 0.9 V Threshold Hysteresis VEN_HYS 100 200 300 mV Enable Pull-Up Voltage (floating, unfaulted) VEN_PU 2 V Enable Pull-Down Voltage (floating, faulted) VEN_PD 0 V Source Current IEN_SO -50 uA Sink Current IEN_SK 50 uA Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 8 of 42 PI33XX-X0 PI3311-X0 (1.0 Vout) Electrical Characteristics Efficiency at 25°C Regulator and inductor performance 331101 331103 Switching Frequency vs. Load Current 331105 Transient Response: 2A to 7A, at 5A/µs 24Vin to 1.0Vout 331102 Cout = 8X 100µF Ceramic Output Ripple: 24Vin, 1.0Vout at 10A Vout = 50mV/Div, 2.0us/Div 331104 Cout = 8X 100µF Ceramic Output ripple: 24Vin, 1.0Vout at 5A Vout = 50mV/Div, 2.0us/Div 331106 Cout = 8X 100µF Ceramic 100 0 1 2 3 4 5 6 7 8 9 10 Efficiency (%) Load Current (A) 12Vin 24Vin 36Vin 100 200 300 400 500 600 1 2 3 4 5 6 7 8 9 10 Frequency (KHz) Load Current (A) 12Vin 24Vin 36Vin Short Circuit Test

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 9 of 42 PI33XX-X0 PI3318-X0 (1.8 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=155nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Input Specifications Input Voltage VIN_DC 8 24 36 V Input Current IIN_DC 835 mA Vin = 24V, TC = 25°C, Iout=10A Input Current At Output Short (fault condition duty cycle) IIN_Short 20 mA Input Quiescent Current IQ_VIN 2 2.5 mA Disabled Enabled (no load) Input Voltage Slew Rate VIN_SR 1 V/μs Output Specifications Output Voltage Total Regulation VOUT_DC 1.77 1.8 1.82 V Note 2. Output Voltage Trim Range VOUT_DC 1.4 2.0 V Note 3. Line Regulation ∆VOUT(∆VIN) 0.1 % @25°C, 8V<Vin<36V Load Regulation ∆VOUT(∆IOUT) 0.1 % @25°C, 0.5A<Iout<10A Output Voltage Ripple VOUT_AC 25 mVp-p Iout=5A, Cout=6x100μF, 20MHz BW Note 4. Continuous Output Current Range IOUT_DC 10 A Note 5. Current Limit IOUT_CL 12 A Protection UVLO Start Threshold VUVLO_START 7.20 7.60 8.00 V UVLO Stop Threshold VUVLO_STOP 6.90 7.25 7.60 V UVLO Hysteresis VUVLO_HYS 4 5 6 % OVLO Threshold VOVLO 37 38.4 V OVLO Hysteresis VOVLO_HYS 0.77 V UVLO/OVLO Fault Delay Time tf_DLY 128 Cycles Number of the switching frequency cycles UVLO/OVLO Response Time tf 500 ns +1% overdrive Output Over Voltage Protection VOVP 20 % Above VOUT Over-Temperature Fault Threshold TOTP 130 135 140 °C Over-Temperature Restart Hysteresis TOTP_HYS 30 °C Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 10 of 42 PI33XX-X0 PI3318-X0 (1.8 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=155nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Timing Switching Frequency fS 600 kHz Note 6. Fault Restart Delay tFR_DLY 30 ms Sync In (SYNCI) Synchronization Frequency Range ∆fSYNCI 50 110 % Relative to set switching frequency. Note 3. SYNCI Threshold VSYNCI 2.5 V Sync Out (SYNCO) SYNCO High VSYNCO_HI 4.5 V Source 1mA SYNCO Low VSYNCO_LO 0.5 V Sink 1mA SYNCO Rise Time tSYNCO_RT 10 20 ns 20pF load SYNCO Fall Time tSYNCO_FT 10 20 ns 20pF load Soft Start And Tracking TRK Active Range (Nominal) VTRK 0 1 V TRK Enable Threshold VTRK_OV 20 40 60 mV Charge Current (Soft – Start) ITRK -70 -50 -30 µA Discharge Current (Fault) ITRK_DIS 6.8 mA Soft-Start Time tSS 2.2 2.6 ms CTRK = 0 Enable High Threshold VEN_HI 0.9 1 1.1 V Low Threshold VEN_LO 0.7 0.8 0.9 V Threshold Hysteresis VEN_HYS 100 200 300 mV Enable Pull-Up Voltage (floating, unfaulted) VEN_PU 2 V Enable Pull-Down Voltage (floating, faulted) VEN_PD 0 V Source Current IEN_SO -50 uA Sink Current IEN_SK 50 uA Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 11 of 42 PI33XX-X0 PI3318-X0 (1.8 Vout) Electrical Characteristics Efficiency at 25°C Regulator and inductor performance 331801 Short Circuit Test 331803 Switching Frequency vs. Load Current 331805 Transient Response: 2A to 7A, at 5A/µs 24Vin to 1.8Vout 331802 Cout = 6X 100µF Ceramic Output Ripple: 24Vin, 1.8Vout at 10A Vout = 50mV/Div, 2.0us/Div 331804 Cout = 6X 100µF Ceramic Output ripple: 24Vin, 1.8Vout at 5A Vout = 50mV/Div, 2.0us/Div 331806 Cout = 6X 100µF Ceramic 100 0 1 2 3 4 5 6 7 8 9 10 Efficiency (%) Load Current (A) 8Vin 12Vin 24Vin 36Vin 100 200 300 400 500 600 700 1 2 3 4 5 6 7 8 9 10 Swicthing Frequency (kHz) Load Current (A) 8Vin 12Vin 24Vin 36Vin

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 12 of 42 PI33XX-X0 PI3312-X0 (2.5 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=200nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Input Specifications Input Voltage VIN_DC 8 24 36 V Note 7. Input Current IIN_DC 1.14 A Vin = 24V, TC = 25°C, Iout=10A Input Current At Output Short (fault condition duty cycle) IIN_Short 20 mA Input Quiescent Current IQ_VIN 2 2.5 mA Disabled Enabled (no load) Input Voltage Slew Rate VIN_SR 1 V/μs Output Specifications Output Voltage Total Regulation VOUT_DC 2.465 2.5 2.535 V Note 2. Line Regulation ∆VOUT (∆VIN) 0.1 % @25°C, 8V<Vin<36V Load Regulation ∆VOUT (∆IOUT) 0.1 % @25°C, 0.5A<Iout<10A Output Voltage Ripple VOUT_AC 28 mVp-p Iout=5A, Cout=4x100μF, 20MHz BW Continuous Output Current Range IOUT_DC 10 A Note 5. Note 7. Current Limit IOUT_CL 12 A Protection UVLO Start Threshold VUVLO_START 7.20 7.60 8.00 V UVLO Stop Threshold VUVLO_STOP 6.90 7.25 7.60 V UVLO Hysteresis VUVLO_HYS 4 5 6 % OVLO Threshold VOVLO 37 38.4 V OVLO Hysteresis VOVLO_HYS 0.77 V UVLO/OVLO Fault Delay Time tf_DLY 128 Cycles Number of the switching frequency cycles UVLO/OVLO Response Time tf 500 ns +1% overdrive Output Over Voltage Protection VOVP 20 % Above Vout Over-Temperature Fault Threshold TOTP 130 135 140 °C Over-Temperature Restart Hysteresis TOTP_HYS 30 °C Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves. Note 7: Minimum 5V between Vin-Vout must be maintained or a minimum load of 1mA required.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 13 of 42 PI33XX-X0 PI3312-X0 (2.5 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=200nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Timing Switching Frequency fS 500 kHz Note 6. Fault Restart Delay tFR_DLY 30 ms Sync In (SYNCI) Synchronization Frequency Range ∆fSYNCI 50 110 % Relative to set switching frequency. Note 3. SYNCI Threshold VSYNCI 2.5 V Sync Out (SYNCO) SYNCO High VSYNCO_HI 4.5 V Source 1mA SYNCO Low VSYNCO_LO 0.5 V Sink 1mA SYNCO Rise Time tSYNCO_RT 10 20 ns 20pF load SYNCO Fall Time tSYNCO_FT 10 20 ns 20pF load Soft Start And Tracking TRK Active Range (Nominal) VTRK 0 1 V TRK Enable Threshold VTRK_OV 20 40 60 mV Charge Current (Soft – Start) ITRK -70 -50 -30 µA Discharge Current (Fault) ITRK_DIS 6.8 mA Soft-Start Time tSS 2.2 2.6 ms CTRK = 0 Enable High Threshold VEN_HI 0.9 1 1.1 V Low Threshold VEN_LO 0.7 0.8 0.9 V Threshold Hysteresis VEN_HYS 100 200 300 mV Enable Pull-Up Voltage (floating, unfaulted) VEN_PU 2 V Enable Pull-Down Voltage (floating, faulted) VEN_PD 0 V Source Current IEN_SO -50 uA Sink Current IEN_SK 50 uA Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves. Note 7: Minimum 5V between Vin-Vout must be maintained or a minimum load of 1mA required.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 14 of 42 PI33XX-X0 PI3312-X0 (2.5 Vout) Electrical Characteristics Efficiency at 25°C Regulator and inductor performance 331201 Short Circuit 331203 Switching Frequency vs. Load Current 331205 Transient Response: 5A to 10A, at 5A/µs 24Vin to 2.5Vout, Cout = 4 x 100µF Ceramic 331202 Vout (Ch1) = 100mV/Div, Iout (Ch4) = 2A/Div, 80us/Div Output Ripple: 24Vin, 2.5Vout at 10A Vout = 20mV/Div, 2.0us/Div 331204 Cout = 4 x 100µF Ceramic Output Ripple: 24Vin, 2.5Vout at 5A Vout = 20mV/Div, 2.0us/Div 331206 Cout = 4 x 100µF Ceramic 50% 55% 60% 65% 70% 75% 80% 85% 90% 95% 0 1 2 3 4 5 6 7 8 9 10 Efficiency Load Current (A) 12V 24V 36V 100 200 300 400 500 600 1 2 3 4 5 6 7 8 9 10 Frequency (KHz) Load Current (A) 12V 24V 36V

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 15 of 42 PI33XX-X0 PI3312-X0 (2.5 Vout) Electrical Characteristics Load Current vs. Ambient Temperature, 0 LFM Regulator and inductor performance 331207 Load Current vs. Ambient Temperature, 400 LFM Regulator and inductor performance 331209 Load Current vs. Ambient Temperature, 200 LFM Regulator and inductor performance 331208 0.0 2.0 4.0 6.0 8.0 10.0 12.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 8Vin 0.0 2.0 4.0 6.0 8.0 10.0 12.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 8Vin 0.0 2.0 4.0 6.0 8.0 10.0 12.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 8Vin

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 16 of 42 PI33XX-X0 PI3301-X0 (3.3 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=200nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Input Specifications Input Voltage VIN_DC 8 24 36 V Note 7. Input Current IIN_DC 1.49 A Vin = 24V, TC = 25°C, Iout=10A Input Current At Output Short (fault condition duty cycle) IIN_Short 20 mA Input Quiescent Current IQ_VIN 2 2.5 mA Disabled Enabled (no load) Input Voltage Slew Rate VIN_SR 1 V/μs Output Specifications Output Voltage Total Regulation VOUT_DC 3.25 3.30 3.36 V Note 2. Line Regulation ∆VOUT(∆VIN) 0.10 % @25°C, 8V<Vin<36V Load Regulation ∆VOUT(∆IOUT) 0.10 % @25°C, 0.5A<Iout<10A Output Voltage Ripple VOUT_AC 37.5 mVp-p Iout=5A, Cout=4x100μF, 20MHz BW Note 4. Continuous Output Current Range IOUT_DC 10 A Current Limit IOUT_CL 12 A Protection UVLO Start Threshold VUVLO_START 7.20 7.60 8.00 V UVLO Stop Threshold VUVLO_STOP 6.90 7.25 7.60 V UVLO Hysteresis VUVLO_HYS 4 5 6 % OVLO Threshold VOVLO 37 38.4 V OVLO Hysteresis VOVLO_HYS 0.77 V UVLO/OVLO Fault Delay Time tf_DLY 128 Cycles Number of the switching frequency cycles UVLO/OVLO Response Time tf 500 ns +1% overdrive Output Over Voltage Protection VOVP 20 % Above VOUT Over-Temperature Fault Threshold TOTP 130 135 140 °C Over-Temperature Restart Hysteresis TOTP_HYS 30 °C Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves. Note 7: Minimum 5V between Vin-Vout must be maintained or a minimum load of 1mA required.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 17 of 42 PI33XX-X0 PI3301-X0 (3.3 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=200nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Timing Switching Frequency fS 650 kHz Note 6. Fault Restart Delay tFR_DLY 30 ms Sync In (SYNCI) Synchronization Frequency Range ∆fSYNCI 50 110 % Relative to set switching frequency. Note 3. SYNCI Threshold VSYNCI 2.5 V Sync Out (SYNCO) SYNCO High VSYNCO_HI 4.5 V Source 1mA SYNCO Low VSYNCO_LO 0.5 V Sink 1mA SYNCO Rise Time tSYNCO_RT 10 20 ns 20pF load SYNCO Fall Time tSYNCO_FT 10 20 ns 20pF load Soft Start And Tracking TRK Active Range (Nominal) VTRK 0 1 V TRK Enable Threshold VTRK_OV 20 40 60 mV Charge Current (Soft – Start) ITRK -70 -50 -30 µA Discharge Current (Fault) ITRK_DIS 6.8 mA Soft-Start Time tSS 2.2 2.6 ms CTRK = 0 Enable High Threshold VEN_HI 0.9 1 1.1 V Low Threshold VEN_LO 0.7 0.8 0.9 V Threshold Hysteresis VEN_HYS 100 200 300 mV Enable Pull-Up Voltage (floating, unfaulted) VEN_PU 2 V Enable Pull-Down Voltage (floating, faulted) VEN_PD 0 V Source Current IEN_SO -50 uA Sink Current IEN_SK 50 uA Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves. Note 7: Minimum 5V between Vin-Vout must be maintained or a minimum load of 1mA required.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 18 of 42 PI33XX-X0 PI3301-X0 (3.3 Vout) Electrical Characteristics Efficiency at 25°C Regulator and inductor performance 330101 Short Circuit 330103 Switching Frequency vs. Load Current 330105 Transient Response: 2A to 7A, at 5A/µs 24Vin to 3.3Vout 330102 Cout = 4 x 100µF Ceramic Output Ripple: 24Vin, 3.3Vout at 10A Vout = 50mV/Div, 2.0us/Div 330104 Cout = 4 x 100µF Ceramic Output Ripple: 24Vin, 3.3Vout at 5A Vout = 50mV/Div, 2.0us/Div 330106 Cout = 4 x 100µF Ceramic 50% 55% 60% 65% 70% 75% 80% 85% 90% 95% 100% 0 1 2 3 4 5 6 7 8 9 10 Efficiency Load Current (A) 12V 24V 36V 100 200 300 400 500 600 700 1 2 3 4 5 6 7 8 9 10 Frequency (KHz) Load Current (A) 12V 24V 36V

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 19 of 42 PI33XX-X0 PI3301-X0 (3.3 Vout) Electrical Characteristics Load Current vs. Ambient Temperature, 0 LFM Regulator and inductor performance 330107 Load Current vs. Ambient Temperature, 400 LFM Regulator and inductor performance 330109 Load Current vs. Ambient Temperature, 200 LFM Regulator and inductor performance 330108 0.0 2.0 4.0 6.0 8.0 10.0 12.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 8Vin 0.0 2.0 4.0 6.0 8.0 10.0 12.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 8Vin 0.0 2.0 4.0 6.0 8.0 10.0 12.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 8Vin

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 20 of 42 PI33XX-X0 PI3302-X0 (5.0 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=200nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Input Specifications Input Voltage VIN_DC 8 24 36 V Note 7. Input Current IIN_DC 2.23 A Vin = 24V, TC = 25°C, Iout=10A Input Voltage Slew Rate VIN_SR 1 V/μs Input Current At Output Short (fault condition duty cycle) IIN_Short 20 mA Input Quiescent Current IQ_VIN 2 2.5 mA Disabled Enabled (no load) Input Voltage Slew Rate VIN_SR 1 V/μs Output Specifications Output Voltage Total Regulation VOUT_DC 4.93 5.00 5.07 V Note 2. Output Voltage Trim Range 3.3 6.5 V Note 3. Note 7. Line Regulation ∆VOUT(∆VIN) 0.1 0.15 % @25°C, 8V<Vin<36V Load Regulation ∆VOUT(∆IOUT) 0.1 0.15 % @25°C, 0.5A<Iout<10A Output Voltage Ripple VOUT_AC 30 mVp-p Iout=5A, Cout=4x47μF 20MHz BW Note 4. Continuous Output Current Range IOUT_DC 10 A Note 5. Note 7. Current Limit IOUT_CL 12 A Protection UVLO Start Threshold VUVLO_START 7.20 7.60 8.00 V UVLO Stop Threshold VUVLO_STOP 6.90 7.25 7.60 V UVLO Hysteresis VUVLO_HYS 4 5 6 % OVLO Threshold VOVLO 37 38.4 V OVLO Hysteresis VOVLO_HYS 0.77 V UVLO/OVLO Fault Delay Time tf_DLY 128 Cycles Number of the switching frequency cycles UVLO/OVLO Response Time tf 500 ns +1% overdrive Output Over Voltage Protection VOVP 20 % Above Vout Over-Temperature Fault Threshold TOTP 130 135 140 °C Over-Temperature Restart Hysteresis TOTP_HYS 30 °C Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves. Note 7: Minimum 5V between Vin-Vout must be maintained or a minimum load of 3mA required.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 21 of 42 PI33XX-X0 PI3302-X0 (5.0 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=200nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Timing Switching Frequency fS 1.0 MHz Note 6. Fault Restart Delay tFR_DLY 30 ms Sync In (SYNCI) Synchronization Frequency Range ∆fSYNCI 50 110 % Relative to set switching frequency. Note 3. SYNCI Threshold VSYNCI 2.5 V Sync Out (SYNCO) SYNCO High VSYNCO_HI 4.5 V Source 1mA SYNCO Low VSYNCO_LO 0.5 V Sink 1mA SYNCO Rise Time tSYNCO_RT 10 20 ns 20pF load SYNCO Fall Time tSYNCO_FT 10 20 ns 20pF load Soft Start And Tracking TRK Active Range (Nominal) VTRK 0 1 V TRK Enable Threshold VTRK_OV 20 40 60 mV Charge Current (Soft – Start) ITRK -70 -50 -30 µA Discharge Current (Fault) ITRK_DIS 6.8 mA Soft-Start Time tSS 2.2 2.6 ms CTRK = 0 Enable High Threshold VEN_HI 0.9 1 1.1 V Low Threshold VEN_LO 0.7 0.8 0.9 V Threshold Hysteresis VEN_HYS 100 200 300 mV Enable Pull-Up Voltage (floating, unfaulted) VEN_PU 2 V Enable Pull-Down Voltage (floating, faulted) VEN_PD 0 V Source Current IEN_SO -50 uA Sink Current IEN_SK 50 uA Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves. Note 7: Minimum 5V between Vin-Vout must be maintained or a minimum load of 3mA required.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 22 of 42 PI33XX-X0 PI3302-X0 (5.0 Vout) Electrical Characteristics Efficiency at 25°C Regulator and inductor performance 330201 Short Circuit Test 330203 Switching Frequency vs. Load Current 330205 Transient Response: 2A to 7A, at 5A/µs 24Vin to 5.0Vin 330202 Cout = 4 X 47uF Ceramic Output Ripple: 24Vin, 5.0Vout at 10A Vout = 50mV/Div, 1.0us/Div 330204 Cout = 4 x 47µF Ceramic Output Ripple: 24Vin, 5.0Vout at 5A Vout = 50mV/Div, 1.0us/Div 330206 Cout = 4 X 47uF Ceramic 100 0 1 2 3 4 5 6 7 8 9 10 Efficiency (%) Load Current (A) 12Vin 24Vin 36Vin 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1 2 3 4 5 6 7 8 9 10 Frequency (MHz) Load Current (A) 12V 24V 36V

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 23 of 42 PI33XX-X0 PI3302-X0 (5.0 Vout) Electrical Characteristics Load Current vs. Ambient Temperature, 0 LFM Regulator and inductor performance 330207 Load Current vs. Ambient Temperature, 400 LFM Regulator and inductor performance 330209 Load Current vs. Ambient Temperature, 200 LFM Regulator and inductor performance 330208 0.0 2.0 4.0 6.0 8.0 10.0 12.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 8Vin 0.0 2.0 4.0 6.0 8.0 10.0 12.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 8Vin 0.0 2.0 4.0 6.0 8.0 10.0 12.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 8Vin

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 24 of 42 PI33XX-X0 PI3303-X0 (12.0 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=230nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Input Specifications Input Voltage VIN_DC 17.4 24 36 V Note 7. Input Current IIN_DC 4.15 A Vin = 24V, TC = 25°C, Iout=8A Input Current At Output Short (fault condition duty cycle) IIN_Short 20 mA Input Quiescent Current IQ_VIN 2 2.5 mA Disabled Enabled (no load) Input Voltage Slew Rate VIN_SR 1 V/μs Output Specifications Output Voltage Total Regulation VOUT_DC 11.82 12.0 12.18 V Note 2. Output Voltage Trim Range VOUT_DC 6.5 12 13.0 V Note 3. Note 7. Line Regulation ∆VOUT(∆VIN) 0.1 % @25°C, 17.4V<Vin<36V Load Regulation ∆VOUT(∆IOUT) 0.1 % @25°C, 0.5A<Iout<8A Output Voltage Ripple VOUT_AC 60 mVp-p Iout=4A, Cout=4x22μF, 20MHz BW Note 4. Continuous Output Current Range IOUT_DC 8 A Note 5. Current Limit IOUT_CL 9 A Protection UVLO Start Threshold VUVLO_START 15.80 16.60 17.40 V UVLO Stop Threshold VUVLO_STOP 15.00 15.80 16.60 V UVLO Hysteresis VUVLO_HYS 4 5 6 % OVLO Threshold VOVLO 37 38.4 V OVLO Hysteresis VOVLO_HYS 0.77 V UVLO/OVLO Fault Delay Time tf_DLY 128 Cycles Number of the switching frequency cycles UVLO/OVLO Response Time tf 500 ns +1% overdrive Output Over Voltage Protection VOVP 20 % Above Vout Over-Temperature Fault Threshold TOTP 130 135 140 °C Over-Temperature Restart Hysteresis TOTP_HYS 30 °C Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves. Note 7: Minimum 5V between Vin-Vout must be maintained or a minimum load of 1mA required.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 25 of 42 PI33XX-X0 PI3303-X0 (12.0 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=230nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Timing Switching Frequency fS 1.4 MHz Note 6. Fault Restart Delay tFR_DLY 30 ms Sync In (SYNCI) Synchronization Frequency Range ∆fSYNCI 50 110 % Relative to set switching frequency. Note 3. SYNCI Threshold VSYNCI 2.5 V Sync Out (SYNCO) SYNCO High VSYNCO_HI 4.5 V Source 1mA SYNCO Low VSYNCO_LO 0.5 V Sink 1mA SYNCO Rise Time tSYNCO_RT 10 20 ns 20pF load SYNCO Fall Time tSYNCO_FT 10 20 ns 20pF load Soft Start And Tracking TRK Active Range (Nominal) VTRK 0 1 V TRK Enable Threshold VTRK_OV 20 40 60 mV Charge Current (Soft – Start) ITRK -70 -50 -30 µA Discharge Current (Fault) ITRK_DIS 6.8 mA Soft-Start Time tSS 2.2 2.6 ms CTRK = 0 Enable High Threshold VEN_HI 0.9 1 1.1 V Low Threshold VEN_LO 0.7 0.8 0.9 V Threshold Hysteresis VEN_HYS 100 200 300 mV Enable Pull-Up Voltage (floating, unfaulted) VEN_PU 2 V Enable Pull-Down Voltage (floating, faulted) VEN_PD 0 V Source Current IEN_SO -50 uA Sink Current IEN_SK 50 uA Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves. Note 7: Minimum 5V between Vin-Vout must be maintained or a minimum load of 1mA required.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 26 of 42 PI33XX-X0 PI3303-X0 (12.0 Vout) Electrical Characteristics Efficiency at 25° Regulator and inductor performance 330301 Short Circuit Test 330303 Switching Frequency vs. Load Current 330305 Transient Response: 4A to 8A, at 5A/µs 24Vin to 12.0Vout 330302 Cout = 4 X 22uF Ceramic Output Ripple: Vin = 24V, Vout = 12V at 8A Vout = 50mV/Div, 1.0us/Div 330304 Cout = 4 X 22uF Ceramic Output Ripple: Vin = 24V, Vout = 12V at 4A Vout = 50mV/Div, 1.0us/Div 330306 Cout = 4 X 22uF Ceramic 100 0 1 2 3 4 5 6 7 8 Efficiency(%) Load Current(A) 17.4Vin 24Vin 36Vin 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1 2 3 4 5 6 7 8 Frequency (MHz) Load Current (A) 17.4Vin 24Vin 36Vin

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 27 of 42 PI33XX-X0 PI3303-X0 (12.0 Vout) Electrical Characteristics Load Current vs. Ambient Temperature, 0 LFM Regulator and inductor performance 330307 Load Current vs. Ambient Temperature, 200 LFM Regulator and inductor performance 330308 Load Current vs. Ambient Temperature, 400 LFM Regulator and inductor performance 330309 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 18Vin 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 18Vin 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 18Vin

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 28 of 42 PI33XX-X0 PI3305-X0 (15.0 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=230nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Input Specifications Input Voltage VIN_DC 20.4 24 36 V Note 7. Input Current IIN_DC 5.15 A Vin = 24V, TC = 25°C, Iout=8A Input Current At Output Short (fault condition duty cycle) IIN_Short 20 mA Input Quiescent Current IQ_VIN 2 2.5 mA Disabled Enabled (no load) Input Voltage Slew Rate VIN_SR 1 V/μs Output Specifications Output Voltage Total Regulation VOUT_DC 14.78 15.0 15.23 V Note 2. Output Voltage Trim Range 10.0 15 16 V Note 3. Note 7. Line Regulation ∆VOUT(∆VIN) 0.1 % @25°C, 20.4V<Vin<36V Load Regulation ∆VOUT(∆IOUT) 0.1 % @25°C, 0.5A<Iout<8A Output Voltage Ripple VOUT_AC 60 mVp-p Iout=4A, Cout=4x22μF, 20MHz BW Note 4. Continuous Output Current Range IOUT_DC 8 A Note 5. Note 7. Current Limit IOUT_CL 9 A Protection UVLO Start Threshold VUVLO_START 18.4 19.4 20.4 V UVLO Stop Threshold VUVLO_STOP 17.4 18.4 19.4 V UVLO Hysteresis VUVLO_HYS 4 5 6 % OVLO Threshold VOVLO 37 38.4 V OVLO Hysteresis VOVLO_HYS 0.77 V UVLO/OVLO Fault Delay Time tf_DLY 128 Cycles Number of the switching frequency cycles UVLO/OVLO Response Time tf 500 ns +1% overdrive Output Over Voltage Protection VOVP 20 % Above Vout Over-Temperature Fault Threshold TOTP 130 135 140 °C Over-Temperature Restart Hysteresis TOTP_HYS 30 °C Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves. Note 7: Minimum 5V between Vin-Vout must be maintained or a minimum load of 1mA required.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 29 of 42 PI33XX-X0 PI3305-X0 (15.0 Vout) Electrical Characteristics Specifications apply for -40C < TJ < 125C, Vin =24V, L1=230nH (Note 1) unless other conditions are noted. Parameter Symbol Min Typ Max Units Conditions Timing Switching Frequency fS 1.5 MHz Note 6. Fault Restart Delay tFR_DLY 30 ms Sync In (SYNCI) Synchronization Frequency Range ∆fSYNCI 50 110 % Relative to set switching frequency. Note 3. SYNCI Threshold VSYNCI 2.5 V Sync Out (SYNCO) SYNCO High VSYNCO_HI 4.5 V Source 1mA SYNCO Low VSYNCO_LO 0.5 V Sink 1mA SYNCO Rise Time tSYNCO_RT 10 20 ns 20pF load SYNCO Fall Time tSYNCO_FT 10 20 ns 20pF load Soft Start And Tracking TRK Active Range (Nominal) VTRK 0 1 V TRK Enable Threshold VTRK_OV 20 40 60 mV Charge Current (Soft – Start) ITRK -70 -50 -30 µA Discharge Current (Fault) ITRK_DIS 6.8 mA Soft-Start Time tSS 2.2 2.6 ms CTRK = 0 Enable High Threshold VEN_HI 0.9 1 1.1 V Low Threshold VEN_LO 0.7 0.8 0.9 V Threshold Hysteresis VEN_HYS 100 200 300 mV Enable Pull-Up Voltage (floating, unfaulted) VEN_PU 2 V Enable Pull-Down Voltage (floating, faulted) VEN_PD 0 V Source Current IEN_SO -50 uA Sink Current IEN_SK 50 uA Note 1: All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33XX evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. Note 2: Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. Note 3: Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or Vout is modified. Note 4: Refer to Output Ripple plots. Note 5: Refer to Load Current vs. Ambient Temperature curves. Note 6: Refer to Switching Frequency vs. Load current curves. Note 7: Minimum 5V between Vin-Vout must be maintained or a minimum load of 1mA required.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 30 of 42 PI33XX-X0 PI3305-X0 (15 Vout) Electrical Characteristics Efficiency at 25°C Regulator and inductor performance 330501 Short circuit test 330503 Switching Frequency vs. Load Current 330505 Transient Response: 2A to 6A, at 5A/µs 24Vin to 15.0Vout 330504 Cout = 4x22µF Ceramic Output Ripple: 24Vin, 15Vout at 8A Vout = 100mV/Div, 1us/Div 330506 Cout = 4x22µF Ceramic Output Ripple: 24Vin, 15Vout at 4A Vout = 100mV/Div, 1us/Div 330507 Cout = 4x22µF Ceramic 100 0 1 2 3 4 5 6 7 8 Efficiency (%) Load Current (A) 20.4Vin 24Vin 36Vin 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0 1 2 3 4 5 6 7 8 Frequency (MHz) Load Current (A) 20.4Vin 24Vin 36Vin

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 31 of 42 PI33XX-X0 PI3305-X0 (15 Vout) Electrical Characteristics Load Current vs. Ambient Temperature, 0 LFM Regulator and inductor performance 330507 Load Current vs. Ambient Temperature, 400 LFM Regulator and inductor performance 330509 Load Current vs. Ambient Temperature, 200 LFM Regulator and inductor performance 330508 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 21Vin 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 21Vin 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 50 75 100 125 Load Current (A) Ambient Temperature (°C) 36Vin 24Vin 21Vin

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 32 of 42 PI33XX-X0 Functional Description The PI33XX is a family of highly integrated ZVS -Buck regulators. The PI33XX has a set output voltage that is trimmable within a prescribed range shown in Table 1. Performance and maximum output current are characterized with a specific external power inductor (see Table 5). Figure 2 - ZVS-Buck with required components For basic operation, Figure 2 shows the connections and components required. No additional design or settings are required. ENABLE (EN) EN is the enable pin of the converter . The EN Pin is referenced to SGND and permits the user to turn the converter on or off. The EN default polarity is a positive logic assertion. If the EN pin is left floating or asserted high, the converter output is enabled. Pulling EN pin below 0.8 Vdc with respect to SGND will disable the regulator output. The EN input polarity can be programmed (PI33XX-20 and PI33XX -21 versions only) via the I 2C data bus . When the EN pin polarity is programmed for negative logic assertion; and if the EN pin is left floating, the regulator output is enabled. Pulling the EN pin above

1.0 Vdc w ith respect to SGND, will disable the

regulator output. Switching Frequency Synchronization The SYNCI input allow s the user to synchronize the controller switching frequency by an external clock referenced to SGN D. The external clock can synchronize the unit between 50% and 110% of the preset switching frequency (fS). For PI33XX-20 and PI33XX-21 versions only , t he phase delay can be programmed via I2C bus with respect to the clock applied at SYNCI pin . Phase delay allows PI33XX regulators to be paralleled and operate in an interleaving mode. The PI33XX default for SYNCI is to sync with respect to the falling edge of the applied clock providing 180° phase shift from SYNCO. This allows for the paralleling of two PI33XX devices without the need for further user programming or external sync clock circuitry. The user can change the SYNCI polarity to sync with the external clock rising edge via the I 2C data bus (PI33XX-20 and PI33XX-21 versions only). When using the internal oscillator, the SYNCO pin provides a 5V clock that can be used to sync other regulators. Therefore, one PI33XX can act as the lead regulator and have additional PI33XXs running in parallel and interleaved. Output Voltage Trim The PI33XX output voltage can be trimmed up from the preset output by connecting a resistor from ADJ pin to SGND and can be trimmed down by connecting a resistor from ADJ pin to VOUT . The Table 2 defines the voltage ranges for the PI33XX family. Device Output Voltage Set Range PI3311-X0-LGIZ 1.0V 1.0 to 1.4V PI3318-X0-LGIZ 1.8V 1.4 to 2.0V PI3312-X0-LGIZ 2.5V 2.0 to 3.1V PI3301-X0-LGIZ 3.3V 2.3 to 4.1V PI3302-X0-LGIZ 5.0V 3.3 to 6.5V PI3303-X0-LGIZ 12V 6.5 to 13.0V PI3305-X0-LGIZ 15V 10.0 to 16.0V Table 2 - PI33XX family output voltage ranges. Soft-Start The PI33XX includes an internal soft-start capacitor to ramp the output voltage in 2 ms from 0V to full output voltage. Connecting an external capacitor from the TRK pin to SGND will increase the start -up ramp period. See, “Soft Start Adjustment and Tra ck,” EN SGND Vin Vin Vout SYNCI VS1 Vout PGND SYNCO REM TRK ADJ EAO PI33XXCin Cout

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 33 of 42 PI33XX-X0 in the Applications Description section fo r more details. Remote Sensing An internal 100Ω resistor is connected between REM pin and VOUT pin to provide regulation when the REM is left open. With REM open, the converter will regulate 100mV above its set point. Connect REM to the desired reference node to be regulated. Output Current Limit Protection PI33XX has two methods implemented to protect from output short or over current condition. Slow Current Limit protection : prevents the output load from sourcing current high er than the regulator’s maximum rated current. If the output current exceeds the Current Limit ( IOUT_CL) for 1024us, a slow current limit fault is initiated and th e regulator is shutdown which eliminates output current flow. After Fault Restart Delay (tFR_DLY), a soft -start cycle is initiated. This r estart cycle will be repeated indefinitely until the excessive load is removed. Fast Current Limit protection : PI33XX monitors the regulator inductor current pulse -by-pulse to prevent the output from supplying very high current due to a sudden low impedance short. If the regulator senses a high inductor current pulse, it will initiate a fault and stop swi tching until Fault Restart Delay ends and then initiate a soft-start cycle. Both the Fast and Sl ow current limit faults are stored in a Fault Register and can be read and cleared (PI33XX-20 and PI33XX -21 versions only) via I2C data bus. Input Under-Voltage Lockout If VIN falls below the input Under Voltage Locko ut (UVLO) threshold, but remains high enough to power the internal bias supply, the PI33XX will complete the current cycle and stop switchi ng. If VIN recovers within 128 switching cycles, the PI33XX will resume normal operation. If this time limit is exceeded , the system will enter a low pow er state and initiate a fault. The system will restart once the input voltage is reestablished and after the Fault Restart Delay. A UVLO fault is stored in a Fault Register and can be read and cleared (PI33XX-20 and PI33XX -21 versions only) via I2C data bus. Input Over Voltage Lockout If VIN exceeds the input Over Voltage Lockout (OVLO) threshold (VOVLO), while the controller is running, the PI33XX will complete the current cycle and stop switching. If VIN recovers within 128 switching cycles, the PI33XX will resume normal operation. Otherwise, the system will enter a low power state and sets an OVLO fault. The system will resume operation when the input voltage falls below 98% of the OVLO threshold and after the Fault Restart Delay. The OVLO fau lt is stored in a Fault Register and can be read and cleared (PI33XX-20 and PI33XX -21 versions only) via I2C data bus. Output Over Voltage Protection The PI33XX family is equipped with output Over Voltage Protection (OVP) to prevent damage to input voltage sensitive devices. If the output vo ltage exceeds 20% of its set regulated value , the regulator will complete the current cycle, stop switching and issue an OVP fault. The system will resume operation once the output voltage falls below the OVP threshold and after Fault Restart D elay. The OVP fault is stored in a Fault Register and can be read and cleared (PI33XX-20 and PI33XX -21 versions only) via I2C data bus. Over Temperature Protection The internal package temperature is monitored to prevent internal components from reaching their thermal maximum. If the Over Temperature Protection Threshold (OTP) is exceeded ( TOTP), the regulator will complete the curr ent switching cycle, enter a low power mode, set a fault flag, and will soft-start when the internal temperature falls below Over-Temperature Restart Hysteresis (TOTP_HYS). The OTP fault is stored in a Fault Register and can be read and cleared (PI33XX -20 and PI33XX -21 versions only) via I2C data bus. Pulse Skip Mode (PSM) PI33XX features a PSM to achieve high efficiency at light loads. T he regulators are set up to skip pulses if

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 34 of 42 PI33XX-X0 SGND Vin Vin Vout VS1 Vout PGND REM TRK EAO PI33XX Cin Cout SGND Vin Vout VS1 PGND REM PI33XX Cout EN EAO TRK EN Vin Cin PGD SYNCI SYNCOSYNCI SYNCO TRK EAO EN EAO TRK EN PGD SYNCI SYNCOSYNCI SYNCO EAO falls below a PSM threshold. Depending on conditions and component values , this may result in single pulses or several consecutive pulses followed by skipped pulses. Skipping cycles significantly reduces gate drive power and improves light load efficiency. The regulator will leave PSM once the EAO rises above the Skip Mode threshold. Variable Frequency Operation Each PI33XX is preprogrammed to a base operating frequency, with respect to the p ower stage inductor (see Table 5), to operate at peak efficiency across line and load variations. At low line and high load applications, the base frequency will decrease to accommodate these extreme operating ranges. By stretching the frequency, the ZVS operation is preserved throughout the total input line voltage range therefore maintaining optimum efficiency. Parallel Operation Paralleling multiple PI33XX modules can be used to increase the output current capability of a single power rail and reduce output voltage ripple. Figure 3 - PI33XX parallel operation By connecting the EAO pins and SGND pins of each module together the units will share the current equally. When the TRK pins of each unit are connected together , the units will track each other during soft-start and all unit EN pins have to be released to allow the units to start ( See Figure 3). Also, any fault event in any regulator will disable the other regulators. The two regulators will be out of phase with each other reducing output ripple (refer to Switching Frequency Synchronization). To provide synchronization between regulators over the entire operational frequency range, the Parallel Good (PGD) pin must be connected to the lead regulator’s SYNCI pin and a 2.5kΩ Resistor, R1, must be placed between SYNCO return and the lead regulator’s SYNCI pin , as shown in Figure 3. In this configuration, at system soft-start, the PGD pin pulls SYNCI low forcing the lead regulator to initialize the open-loop startup synchronization. Once the regulators reach regulation, SYNCI is released and the system is now synchronized in a closed -loop configuration whi ch allows the system to adjust , on the fly, when any of the individual regulators begin to enter variable frequency mode in the loop. Multi-phasing three regulators is possible (PI33XX-20 and PI33XX -21 only) with no change to the basic single-phase design . For more information about how to program phase delays within the regulator , please refer to Picor application note PI33XX-2X Multi-Phase Design Guide. I2C Interface Operation PI33XX-20 and PI33XX -21 provide an I2C digital interface that enables the user to program the EN pin polarity (from high to low assertion) and switching frequency synchronization phase/delay. These are one time programmable options to the device. Also, the PI33XX-20 and PI33XX-21 allow for dynamic Vout margining via I2C that is useful during development (settings stored in volatile memory only and not retained by the device). The PI33XX-20 and PI33XX-21 also have the opti on for fault telemetry including:  Over temperature protection  Fast/Slow current limit  Output voltage high  Input overvoltage  Input undervoltage

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 35 of 42 PI33XX-X0 For more information about how to utilize the I 2C interface please refer to Picor application note PI33XX-2X I2C Digital Interface Guide. Application Description Output Voltage Trim The PI33XX family of Buck Regulators provides seven common output voltages: 1.0V, 1.8V, 2.5V, 3.3V, 5.0V, 12V and 15V. A post-package trim step is implemented to offset any resistor divider network errors ensuring maximum output accur acy. With a single resistor connected from the ADJ pin to SGND or REM, each device’s output can be varied above or below the nominal set voltage (with the exception of the PI3311 -X0 which can only be above the set voltage of 1V). Device Output Voltage Set Range PI3311-X0-LGIZ 1.0V 1.0 to 1.4V PI3318-X0-LGIZ 1.8V 1.4 to 2.0V PI3312-X0-LGIZ 2.5V 2.0 to 3.1V PI3301-X0-LGIZ 3.3V 2.3 to 4.1V PI3302-X0-LGIZ 5.0V 3.3 to 6.5V PI3303-X0-LGIZ 12V 6.5 to 13.0V PI3305-X0-LGIZ 15V 10.0 to 16.0V Table 3 - PI33XX family output voltage ranges The remote pin (REM) should always be connected to the VOUT pin , if not used, to prevent an output voltage offset. Figure 4 shows the internal feedback voltage divider network. Figure 4 - Internal resistor divider network R1, R2, a nd R4 are all internal 1.0 % resistors and R_low and R_high are external resistors for which the designer can add to modify VOUT to a desired output. The internal resistor value for each regulator is listed below in Table 4. Device R1 R2 R4 PI3311-X0-LGIZ 1k Open 100 PI3318-X0-LGIZ 0.806K 1.0k 100 PI3312-X0-LGIZ 1.5k 1.0k 100 PI3301-X0-LGIZ 2.61k 1.13k 100 PI3302-X0-LGIZ 4.53k 1.13k 100 PI3303-X0-LGIZ 11.0k 1.0k 100 PI3305-X0-LGIZ 14.0k 1.0k 100 Table 4 - PI33XX Internal divider values By choosing an output voltage value wit hin the ranges stated in Table 3 , VOUT can simply be adjusted up or down by selecting the proper R_high or R_low value, respectively. The following equations can be used to calculate R_high and R_low values: ( ) ( ) ( ) ( ( ) If, for example, a 4 .0V output is needed, the user should choose t he regulator with a trim range covering 4.0V from Table 3. For this example, the PI3301 is selected (3.3 V set voltage ). First step would be to use Equation (1) to calculate R_ high since the required output voltage is higher than the regulator set voltage. T he resistor -divider network values for the PI3301 are can be found in Table 4 and are R1=2.61kΩ and R2=1.13kΩ. Inserting these values in to Equation (1), R_high is calculated as follows: ( ) - ADJ REM VOUT SGND R_low R_high 1.0Vdc

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 37 of 42 PI33XX-X0 thermal operation is limited by either the MOSFETs or inductor depending upon line and load conditions. Thermal measurements were made using a standard PI33XX Evaluation board which is 3x4 inches in area and uses 4 -layer, 2oz copper. Thermal measurements were made on the three main power devices, the two internal MOSFETs and the external inductor, with air flows of 0, 200, and 400 LFM.

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 38 of 42 PI33XX-X0 Filter Considerations The PI33XX requires input bulk storage capacitance as well as low impedance ceramic X5R input capacitors to ensure proper start up and high frequency dec oupling for the power stage. The PI33XX will draw nearly all of the high frequency current from the low impedance ceramic capacitors when the main high side MOSFET is conducting. During the time the high side MOSFET is off, they are replenished from the bu lk capacitor. If the input impedance is high at the switching frequency of the converter, the bulk capacitor must supply all of the average current into the converter, including replenishing the ceramic capacitors. This value has been chosen to be 100µF so that the PI33XX can start up into a full resistive load and supply the output capacitive load with the default minimum soft start capacitor when the input source impedance is 50 Ohms at 1MHz. The ESR for this capacitor should be approximately 20 mΩ. The RMS ripple current in this capacitor is small, so it should not be a concern if the input recommended ceramic capacitors are used. Table 6 shows the recommended input and output capacitors to be used for the various models as well as expected transient response, RMS ripple currents per capacitor, and input and output ripple voltages. Table 7 includes the recommended inpu t and output ceramic capacitors. Device VIN (V) ILOAD (A) CINPUT Bulk Elec. CINPUT Ceramic X5R COUTPUT Ceramic X5R CINPUT Ripple Current (IRMS) COUTPUT Ripple Current (IRMS) Input Ripple (mVpp) Output Ripple (mVpp) Transient Deviation (mVpk) Recovery Time (µs) Load Step (A) (Slew/µs) PI3311 10 100µF 50V 4X4.7µF 50V 8X100µF 2X1 µF 1X0.1 µF 0.5 0.8 120 20 -/+40 40 5 (5A/µs) 5 100 15 PI3318 10 100µF 50V 4X4.7µF 50V 6X100µF 2X1 µF 1X0.1 µF 0.5 0.8 120 20 -/+40 40 5 (5A/µs) 5 100 15 PI3312 10 100µF 50V 4X4.7µF 4X100µF 2X1 µF 1X0.1 µF 1 1.75 150 50 -/+80 25 5 (10A/µs) 5 100 24 PI3301 24 10 100µF 50V 4X4.7µF 4X100µF 2X1 µF 1X0.1 µF 1.05 1.625 200 40 -/+100 20 5 (10A/µs) 5 125 33 PI3302 10 100µF 50V 4X4.7µF 4X47µF 2X1 µF 1X0.1 µF 1.2 1.5 220 50 -/+170 30 5 (5A/µs) 5 140 30 PI3303 8 100µF 50V 4X4.7µF 4X22µF 2X1 µF 1X0.1 µF 1.3 1.36 275 100 -/+300 30 4 (10A/µs) 4 150 60 PI3305 8 100µF 50V 4X4.7µF 4X22µF 2X1 µF 1X0.1 µF 1.38 1.2 280 150 -/+400 30 4 (10A/µs) 4 160 75 Table 6 - Recommended input and output capacitance MURATA PART NUMBER DESCRIPTION MURATA PART NUMBER DESCRIPTION GRM188R71C105KA12D 1uF 16V 0603 X7R GRM31CR71H475KA12K 4.7uF 50V 1206 X7R GRM319R71H104KA01D 0.1uF 50V 1206 X7R GRM31CR61A476ME15L 47uF 10V 1206 X5R GRM31CR60J107ME39L 100uF 6.3V 1206 X5R GRM31CR61E226KE15L 22uF 25V 1206 X5R Table 7 - Capacitor manufacturer part numbers

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 41 of 42 PI33XX-X0 Package Drawings

vicorpower.com Rev 1.4 Cool-Power® 800 735.6200 11/2012 Page 42 of 42 PI33XX-X0 Warranty Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication. Vicor reserves the right to make changes to any products, specifications, and product descriptions at any time without notice. Information published by Vicor has been checked and is believed to be accurate at the time it was printed; however, Vicor assumes no responsibility for inaccuracies. Testing and other quality controls are u sed to the extent Vicor deems necessary to support Vicor’s product warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. Specifications are subject to change without notice. Vicor’s Standard Terms and Conditions All sales are subject to Vicor’s Standard Terms and Conditions of Sale, which are available on Vicor’s webpage or upon request. Product Warranty In Vicor’s standard terms and conditions of sale, Vicor warrants that its products are free from non -conformity to its Standard Specifications (the “Express Limited Warranty”). This warranty is extended only to the original Buyer for the period expiring two (2) years after the date of shipment and is not transferable. UNLESS OTHERWISE EXPRESSLY STATED IN A WRITTEN SALES AGREEMENT SIGNED BY A DULY AUTHORIZED VICOR SIGNATORY, VICOR DISCLAIMS ALL REPRESENTATIONS, LIABILITIES, AND WARRANTIES OF ANY KIND (WHETHER ARISING BY IMPLICATION OR BY OPERATION OF LAW) WITH RESPECT TO THE PRODUCTS, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR REPRESENTATIONS AS TO MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, INFRINGEMENT OF ANY PATENT, COPYRIGHT, OR OTHER INTELLECTUAL PROPERTY RIGHT, OR ANY OTHER MATTER. This warranty does not extend to products subjected to misuse, accident, or improper application, maintenance, or storage. Vicor shall not be liable for collateral or consequential damage. Vicor disclaims any and all liability arising out of the applica tion or use of any product or circuit and assumes no liability for applications assistance or buyer product design. Buyers are responsible for their products and applications using Vicor products and components. Prior to using or distributing any products that include Vico r components, buyers should provide adequate design, testing and operating safeguards. Vicor will repair or replace defective products in accordance with its own best judgment. For service under this warranty, th e buyer must contact Vicor to obtain a Return Mate rial Authorization (RMA) number and shipping instructions. Products returned without prior authorization will be returned to the buyer. The buyer will pay all charges incurred in returning the product to the factory. Vicor will pay all reshipment charges if the product was defective within the terms of this warranty. Life Support Policy VICOR’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OF FICER AND GENERAL COUNSEL OF VICOR CORPORATION. As used herein, life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and whose failure to perform when properly used in accord ance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user. A cri tical component is any component in a life support device or system whose failure to perform can be reasonably expected t o cause the failure of the life support device or system or to affect its safety or effectiveness. Per Vicor Terms and Conditions of Sal e, the user of Vicor products and components in life support applications assumes all risks of such use and indemnifies Vicor against all liability and damages. Intellectual Property Notice Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent applicatio ns) relating to the products described in this data sheet. No license, whether express, implied, or arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Interested parties should contact Vicor's Intellectual Propert y Department. The products described on this data sheet are protected by the following U.S. Patents Numbers: RE 40,072. Vicor Corporation Picor Corporation

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