PT8104A

PT8100 TI | Alldatasheet

Document overview

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Technical content

Features

• 40ADC Output Current
• +3.3V or +5V Input
• Low Output Voltages: 0.8V—2.7V
• High Efficiency
• Programmable Output: (VRM Compatible 5-bit Codes)
• Multiphase Topology C1 = Required 1500µF electrolytic input capacitor C2 = Required 660µF low ESR OS-Con®, or 1,200µF aluminum electrolytic Lin/C3 = Optional input filter components. 1µH input choke and 100µF electroytic capacitor.

Ordering Information

Part No. Progam Range Bus PT8101/G72=1.300to 2.70V 5V PT8102/G72=1.075to 1.85V 5V PT8103/G72=1.075to 1.85V 3.3V PT8104/G72=1.050to 1.825V 5V PT8105/G72=0.800to 1.575V 3.3V 40-A 3.3/5-V Input Programmable Integrated Switching Regulator SLTS157A (Revised 8/23/2002) PT8100 Series (Except PT8104) 4321 3 1 23–30 6 17–22 12–16 L O A D C 2 660µF Required +C 1 1,500µF Required PROGRAMMING PINS VIN VOUT GND REMOTE SENSE STBY* VID0 VID1 VID2 VID3 1µH GND VID4 VID Common 11 C 3 100µF Optional and input current ripple performance. The modules are designed for high- end computing and signal processing applications, both of which demand high output currents at low supply voltages. The modules have a number of standard features to facilitate system integration. These include short- circuit protection, thermal shutdown, standby (On/Off) control, and an output remote sense to compensate for voltage drop between the regu- lator and the load. In addition, the voltage programming codes are compatible with Intel’s® VRM specifications.

• Output Remote Sense
• Short-Circuit Protection
• Thermal Shutdown
• Standby On/Off Control
• Space-Saving Package
• Solderable Copper Case PT Series Suffix (PT1234x) Case/Pin Order Package Configuration Suffix Code Vertical N (EKH) Horizontal A (EKF) SMD C (EKG) (Reference the applicable package code drawing for the dimensions and PC board layout)

For technical support and more information, see inside back cover or visit www.ti.com2 VID 3 VID 2 VID 1 VID 0 1111 1110 1101 1100 1011 1010 1001 1000 0111 0110 0101 0100 0011 0010 0001 0000 Pin Function

1 VID 0

2 VID 1

3 VID 2

4 VID 3

5 VID 4

6 STBY *

7 Do Not Connect

8 Do Not Connect

9 Do Not Connect

10 Do Not Connect

11 VID Common

Notes: i) Logic 0 = Connect to VID Common ii) Logic 1 = Open circuit (no pull-up resistors) iii) VID3 and VID4 may not be changed while the unit is operating. iv) The output voltage of the PT8101 must not be set higher than 2.7V. Pin Function

12 V in

13 V in

14 V in

15 V in

16 V in

17 GND

18 GND

19 GND

20 GND

21 GND

22 GND

23 V out

24 V out

25 V out

26 V out

27 V out

28 V out

29 V out

30 V out

31 Remote Sense

Pin-Out Information (Except PT8104 –see p.3) Voltage Programming Information (Except PT8104 –see p.3) PT8101 (VRM 8.4) VID 4=1 VID 4=0 Vout (iv) Vout 2.00 1.30V 2.10 1.35V 2.30 1.40V 2.40 1.45V 2.50 1.50V 2.60 1.55V 2.70 1.60V N/A 1.65V N/A 1.70V N/A 1.75V N/A 1.80V N/A 1.85V N/A 1.90V N/A 1.95V N/A 2.00V N/A 2.05V PT8102/8103 (VRM 9.1) VID 4=1 VID 4=0 Vout Vout 1.075V 1.475V 1.100V 1.500V 1.125V 1.525V 1.150V 1.550V 1.175V 1.575V 1.200V 1.600V 1.225V 1.625V 1.250V 1.650V 1.275V 1.675V 1.300V 1.700V 1.325V 1.725V 1.350V 1.750V 1.375V 1.775V 1.400V 1.800V 1.425V 1.825V 1.450V 1.850V * For STBY pin: Open =Output Enabled VID Common =Output Disabled PT8100 Series 40-A 3.3/5-V Input Programmable Integrated Switching Regulator PT8105 (Custom Code) VID 4=1 VID 4=0 Vout Vout 0.800V 1.200V 0.825V 1.225V 0.850V 1.250V 0.875V 1.275V 0.900V 1.300V 0.925V 1.325V 0.950V 1.350V 0.975V 1.375V 1.000V 1.400V 1.025V 1.425V 1.050V 1.450V 1.075V 1.475V 1.100V 1.500V 1.125V 1.525V 1.150V 1.550V 1.175V 1.575V

For technical support and more information, see inside back cover or visit www.ti.com 3 Standard Application (PT8104 only) Cin =Required 1500µF electrolytic Cout =Required 660µF low ESR OS-Con®, or 1,200µF aluminum electrolytic Lin =Optional 1µH input choke PT8104 4321 3 1 23–30 61 7 –22 12–16 L O A D C OUT C IN PROGRAMMING PINS VIN VOUT GND REMOTE SENSE STBY* VID 25mV VID 0 VID 1 VID 2 L in 1µH GND VID 3 VID Common 11 VID 3 VID 2 VID 1 VID 0 1111 1110 1101 1100 1011 1010 1001 1000 0111 0110 0101 0100 0011 0010 0001 0000 Pin Function

1 VID 25mV

2 VID 0

3 VID 1

4 VID 2

5 VID 3

6 STBY

Notes: i) Logic 0 = Connect to VID Common ii) Logic 1 = Open circuit (no pull-up resistors) iii) VID3 and VID4 may not be changed while the unit is operating. Pin Function Pin-Out Information (PT8104 only) PT8104 (VRM 8.5) VID 25mV=0 VID 25mV=1 Vout Vout 1.300V 1.325V 1.350V 1.375V 1.400V 1.425V 1.450V 1.475V 1.500V 1.525V 1.550V 1.575V 1.600V 1.625V 1.650V 1.675V 1.700V 1.725V 1.750V 1.775V 1.800V 1.825V 1.050V 1.075V 1.100V 1.125V 1.150V 1.175V 1.200V 1.225V 1.250V 1.275V PT8100 Series 40-A 3.3/5-V Input Programmable Integrated Switching Regulator * For STBY pin: Open =Output Enabled VID Common =Output Disabled Voltage Programming Information (PT8104 only)

For technical support and more information, see inside back cover or visit www.ti.com4 PT8100 Series 40-A 3.3/5-V Input Programmable Integrated Switching Regulator PT8101 /2 Specifications (Unless otherwise stated T a =25°C, C1 =1,500µF, C2 =660µF, Vin =5V, & Io =40A ) PT8101/2, Vin =5V Characteristics Symbols Conditions Min Typ Max Units Output Current I o 25°C, natural convection 0.1 (1) —3 8 A60°C with 200LFM airflow 0.1 (1) —4 0 Input Voltage Range V in Over Io Range 4.5 — 5.5 V Set-Point Voltage Tolerance V o tol Over V o range — ±1 ±2 %V Line Regulation ∆Regline Over Vin range — ±5 — mV Load Regulation ∆Regload Over Io range — ±5 — mV Temperature Variation ∆Regtemp –40°C ≤Ta ≤85°C — ±0.5 — %V o Total Output Voltage Variation ∆Votot Includes set-point, line load, — — ±3 %V –40°C ≤Ta ≤ 85°C Efficiency η Io =20A V o =2.5V — 93 — Vo =1.2V — 86 — Io =40A V o =2.5V — 89 — Vo =1.2V — 81 — Vo Ripple (pk-pk) V r 20MHz bandwidth — 25 — mV Transient Response (Vo =1.8V) t tr 1A/µs load step, 50% to 100% I omax — 50 — µSec ∆Vtr Vo over/undershoot — 75 — mV Transient Response (Vo =1.2V) t tr 1A/µs load step, 50% to 100% I omax — 25 — µSec ∆Vtr Vo over/undershoot — 30 — mV Short Circuit Threshold I osc — 60 — A Switching Frequency ƒ o Over load range 300 350 400 kHz Standby Control (pin 6) Input High Voltage V IH Referenced to GND (pins 17–22) — — Open (2) V Input Low Voltage V IL -0.2 — 0.8 Input Low Current I IL Pin 6 to GND — 0.5 — mA Standby Input Current I in standby Pin 6 to GND — 35 — mA External Output Capacitance C 2 See application schematic 660 (5) — 15,000 µF External Input Capacitance C 1 See application schematic 1,500 — — µF Operating Temperature Range T a Over Vin Range –40 (3) —+ 8 5 (4) °C Storage Temperature T s — -40 — +125 °C Mechanical Shock Per Mil-STD-883D, Method 2002.3 1 msec, Half Sine, mounted to a fixture — 500 — G’s Mechanical Vibration Mil-STD-883D, Method 2007.2 Vertical — 20 (6) — G’s20-2000 Hz, soldered in PCB H orizontal — 20 (6) Weight — Vertical/Horizontal — 55 — grams Flammability — Materials meet UL 94V-0 Notes: (1) ISR-will operate down to no load with reduced specifications. (2) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the module will operate when input power is ap plied. A low-leakage MOSFET is recommended to control this input. The open-circuit voltage is nominally 5V. See application notes for interface cons iderations. (3) For operation below 0°C, C out must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors. (4) See safe Operating Area curves or consult factory for the appropriate derating. (5) The PT8100 regulators require a minimum of 660µF, low ESR ouput capacitance (1,200µF for standard aluminum electrolytic) for proper operation. (6) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable p ackage outline drawing. Input Filter: The filter components L 1, and C3 are optional for most applications. The inductor must be rated to handle the projected input current. A rating of 30ADC is recommended. The capacitance C1 must be rated for a minimum of 1Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required. For more information refer to the application note on capacitor recommendations for this product.

For technical support and more information, see inside back cover or visit www.ti.com 5 PT8100 Series 40-A 3.3/5-V Input Programmable Integrated Switching Regulator PT8103/5 Specifications (Unless otherwise stated T a =25°C, C1 =1,500µF, C2 =660µF, Vin =3.3V, & Io = 40A ) PT8103/5, Vin =3.3V Characteristics Symbols Conditions Min Typ Max Units Output Current I o 25°C, natural convection 0.1 (1) —3 9 A60°C with 200LFM airflow 0.1 (1) —4 0 Input Voltage Range V in Over Io Range 3.1 — 3.6 V Set-Point Voltage Tolerance V o tol Over V o range — ±1 ±2 %V Line Regulation ∆Regline Over Vin range — ±5 — mV Load Regulation ∆Regload Over Io range — ±5 — mV Temperature Variation ∆Regtemp –40°C ≤Ta ≤85°C — ±0.5 — %V o Total Output Voltage Variation ∆Votot Includes set-point, line, load, — — ±3 %V –40°C ≤Ta ≤ 85°C Efficiency η Io =20 V o =1.8V — 90 — Vo =0.8V — 84 — Io =40 V o =1.8V — 86 — Vo =0.8V — 78 — Vo Ripple (pk-pk) V r 20MHz bandwidth — 25 — mV Transient Response (Vo =1.2V) t tr 1A/µs load step, 50% to 100% Iomax — 25 — µSec ∆Vtr Vo over/undershoot — 30 — mV Short Circuit Threshold I osc — 60 — A Switching Frequency ƒ o Over load range 300 350 400 kHz Standby Control (pin 6) Input High Voltage V IH Referenced to GND (pins 17–22) — — Open (2) V Input Low Voltage V IL -0.2 — 0.8 Input Low Current I IL Pin 6 to GND — 0.5 — mA Standby Input Current I in standby Pin 6 to GND — 35 — mA External Output Capacitance C 2 See application schematic 660 (5) — 15,000 µF External Input Capacitance C 1 See application schematic 1,500 — — µF Operating Temperature Range T a Over Vin Range –40 (3) —+ 8 5 (4) °C Storage Temperature T s — -40 — +125 °C Mechanical Shock Per Mil-STD-883D, Method 2002.3 1 msec, Half Sine, mounted to a fixture — 500 — G’s Mechanical Vibration Mil-STD-883D, Method 2007.2 Vertical — 20 (6) — G’s20-2000 Hz, soldered in PCB H orizontal — 20 (6) Weight — Vertical/Horizontal — 55 — grams Flammability — Materials meet UL 94V-0 Notes: (1) ISR-will operate down to no load with reduced specifications. (2) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the module will operate when input power is ap plied. A low-leakage MOSFET is recommended to control this input. The open-circuit voltage is nominally 5V. See application notes for interface cons iderations. (3) For operation below 0°C, C out must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors. (4) See safe Operating Area curves or consult factory for the appropriate derating. (5) The PT8100 regulators require a minimum of 660µF, low ESR ouput capacitance (1,200µF for standard aluminum electrolytic) for proper operation. (6) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable p ackage outline drawing. Input Filter: The filter components L 1 and C3 are optional for most applications. The inductor must be rated to handle the projected input current. A rating of 30 ADC is recommended. The input capacitance, C1 must be rated for a minimum of 1Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required. For more information refer to the application note on capacitor recommendations for this product.

For technical support and more information, see inside back cover or visit www.ti.com6 PT8100 Series 40-A 3.3/5-V Input Programmable Integrated Switching Regulator PT8104 Specifications (Unless otherwise stated T a =25°C, C1 =1,500µF, C2 =660µF, Vin =5V, Vo =1.8V, & Io =40A ) PT8104, Vin =5V Characteristics Symbols Conditions Min Typ Max Units Output Current I o 25°C, natural convection 0.1 (1) —3 8 A60°C with 200LFM airflow 0.1 (1) —4 0 Input Voltage Range V in Over Io Range 4.5 — 5.5 V Set-Point Voltage Tolerance V o tol Over V o range — ±1 ±2 %V Line Regulation ∆Regline Over Vin range — ±10 — mV Load Regulation (Droop) ∆Regload Over Io range — 1.5 — mV/A Temperature Variation ∆Regtemp –40°C ≤Ta ≤85°C — ±0.5 — %V o Total Output Voltage Variation ∆Votot Includes set-point, line, load, — — 75 (2) mV–40°C ≤Ta ≤ 85°C, pin 31 to GND Efficiency η Io =15A V o =1.8V — 90 — Vo =1.5V — 88 — % Vo =1.2V — 87 — Io =40A V o =1.8V — 85 — Vo =1.5V — 82 — % Vo =1.2V — 80 — Vo Ripple (pk-pk) V r 20MHz bandwidth — 25 — mV Transient Response (Vo =1.2V) t tr 1A/µs load step, 50% to 100% Iomax — 50 — µSec ∆Vtr Vo over/undershoot — 50 — mV Short Circuit Threshold I osc — 58 — A Switching Frequency ƒ o Over load range 300 350 400 kHz Standby Control (pin 6) Input High Voltage V IH Referenced to GND (pins 17–22) — — Open (3) V Input Low Voltage V IL –0.2 — 0.8 Input Low Current I IL Pin 6 to GND — 0.5 — mA Standby Input Current I in standby Pin 6 to GND — 35 — mA External Output Capacitance C 2 See PT8104 application schematic 660 (6) — 15,000 µF External Input Capacitance C 1 See PT8104 application schematic 1,500 — — µF Operating Temperature Range T a Over Vin Range –40 (4) —+ 8 5 (5) °C Storage Temperature T s — –40 — +125 °C Mechanical Shock Per Mil-STD-883D, Method 2002.3 1 msec, Half Sine, mounted to a fixture — 500 — G’s Mechanical Vibration Mil-STD-883D, Method 2007.2 Vertical — 20 (7) — G’s20-2000 Hz, soldered in PCB H orizontal — 20 (7) Weight — Vertical/Horizontal — 55 — grams Flammability — Materials meet UL 94V-0 Notes: (1) ISR-will operate down to no load with reduced specifications. (2) Total output voltage variation includes load regulation droop, which is required for compliance with specification VRM 8.4-5 (3) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the module will operate when input power is ap plied. A low-leakage MOSFET is recommended to control this input. The open-circuit voltage is nominally 5V. See application notes for interface cons iderations. (4) For operation below 0°C, C out must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors. (5) See safe Operating Area curves or consult factory for the appropriate derating. (6) The PT8100 regulators require a minimum of 660µF, low ESR ouput capacitance (1,200µF for standard aluminum electrolytic) for proper operation. (7) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable p ackage outline drawing. Input Filter: The filter components L 1 and C3 are optional for most applications. The inductor must be rated to handle the projected input current. A rating of 20 ADC is recommended. The input capacitance, C1 must be rated for a minimum of 1Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required. For more information refer to the application note on capacitor recommendations for this product.

For technical support and more information, see inside back cover or visit www.ti.com 7 Characteristic Data; Vin =5V, PT8101/2/4 (See Note A) Efficiency vs Output Current Power Dissipation vs Output Current Output Ripple vs Output Current PT8100 Series 40-A 3.3/5-V Input Programmable Integrated Switching Regulator Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter. Note B: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures 100 0 8 16 24 32 40 Iout (A) Efficiency - % 2.5V 1.8V 1.5V 1.2V VOUT 0 8 16 24 32 40 Iout (A ) Ripple - mV 1.5V 1.8V 2.5V 1.2V VOUT 0 8 16 24 32 40 Iout (A ) Pd - Watts 2.5V 1.8V 1.5V 1.2V VOUT Typical Characteristics Safe Operating Area; Vin =5V (See Note B) 0 8 16 24 32 40 Iout (A ) Ambient Temperature (°C) 400LFM 200LFM 60LFM Nat conv Airflow PT8101, Vo =2.5V 0 8 16 24 32 40 Iout (A ) Ambient Temperature (°C) 400LFM 200LFM 60LFM Nat conv Airflow PT8102/PT8104, Vo =1.8V

For technical support and more information, see inside back cover or visit www.ti.com8 Safe Operating Area; Vin =3.3V (See Note B) PT8100 Series 40-A 3.3/5-V Input Programmable Integrated Switching Regulator Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter. Note B: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures Typical Characteristics 0 8 16 24 32 40 Iout (A ) Ambient Temperature (°C) 400LFM 200LFM 60LFM Nat conv Airflow 0 8 16 24 32 40 Iout (A ) Ambient Temperature (°C) 400LFM 200LFM 60LFM Nat conv Airflow PT8103, Vo =1.8V PT8105, Vo =1.5V 0 8 16 24 32 40 Iout (A ) Ambient Temperature (°C) 400LFM 200LFM 60LFM Nat conv Airflow PT8105, Vo =0.8V Characteristic Data; Vin =3.3V, PT8103/5 (See Note A) 100 0 8 16 24 32 40 Iout (A ) Efficiency - % 1.8V 1.5V 1.2V 0.8V VOUT 0 8 16 24 32 40 Iout (A ) Ripple - mV 0.8V 1.2V 1.8V 1.5V V OUT 0 8 16 24 32 40 Iout (A ) Pd - Watts 1.8V 1.5V 1.2V 0.8V VOUT Efficiency vs Output Current Power Dissipation vs Output Current Output Ripple vs Output Current

For technical support and more information, see inside back cover or visit www.ti.com Application Notes Table 1 Capacitors Characteristic Data Capacitor Recommendations for the Non-Isolated 40-A Excalibur™ Series of Regulators Input Capacitors The recommended input capacitance is determined by the 1.0 ampere minimum ripple current rating and 1500µF minimum capacitance. Capacitors listed below must be rated for a minimum of 2 × the input voltage with +5V operation. Ripple current and ≤100mΩ equivalent series resistance (ESR) values are the major considerations along with temperature when selecting the proper capacitor. Output Capacitors The minimum required output capacitance is either 660µF Oscon/Tantalum or 1200µF Alunimun Electrolytic with a maximum ESR less than or equal to 100m Ω . Failure to observe this requirement may lead to regulator insta- bility or oscillation. Electrolytic capacitors have poor ripple performance at frequencies greater than 400kHz, but excellent low frequency transient response. Above the ripple frequency ceramic decoupling capacitors are necessary to improve the transient response and reduce any high frequency noise components apparent during higher current excursions. Preferred low ESR type capacitor part numbers are identified in Table 1 below. Tantalum Characteristics Tantalum capacitors with a minimum 10V rating are recommended on the output bus, but only the AVX TPS, Sprague 594/595, or Kemet T495/T510 product series. The AVX TPS, Sprague, or Kemet series capacitors are specified over other types due to their higher surge current, excellent power dissipation, and ripple current ratings. As a caution, the TAJ Series by AVX is not recommended. This series exhibits considerably higher ESR, reduced power dissipation and lower ripple current capability. The TAJ series is also less reliable compared to the TPS series when determining power dissipation capability. Capacitor Table Table 1 identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple current (rms) ratings. The suggested minimum quantities per regu- lator for both the input and output buses are identified. This is not an extensive capacitor list. The table below is a suggested selection guide for input and output capacitors. Other capacitor vendors are available with comparable RMS ripple current rating and ESR (Equivalent Series Resistance at 100kHz). These critical parameters are necessary to insure both opti- mum regulator performance and long capacitor life. PT8100 rodneVroticapaC seireS scitsiretcarahCroticapaCy titnauQ gnikroW egatloV )Fµ(eulaVt nelaviuqE)RSE( ecnatsiseRseireS mumixaMC°58 elppiR )smrI(tnerruC lacisyhP )mm(eziS tupnI suB tuptuO suB rebmuNrodneV cinosanaP )tnuoMecafruS(KF/CF )laidaR(CF V61 V61 V61 0051 0022 0051 060.0 Ω 830.0 Ω 340.0 Ω Am0011 Am0002 Am0961 5.21 × 5.31 5.61x81 51x61 Q251C1KFVEE N222C1CFVEE S251C1CFUEE noC-imehCdetinU )laidaR(ZXL XF V61 V52 V3.6 V01 0051 0081 0001 086 830.0 Ω 920.0 Ω 310.0 Ω 510.0 ÷Ω 2= 700.0 Ω Am0661 Am0022 Am5394 Am0007> 02x5.21 02x61 01 × 5.01 01 × 5.01 LL02X21M551BV61ZXL LL02X61M281BV52ZXL )V3.3=niV(M0001XF6 )noc-sO(M086XF01 nocihciN seireSLP seireSDU V01 V01 V01 0051 0081 0001 050.0 Ω 440.0 Ω 90.0 Ω Am0911 Am0241 2xAm076 51x61 51x61 01 × 01 6HHM251A1MPU 6HHM281A1MPU SG1RCM201A1DUU :noc-sO SS )tnuoMecafruS(PVS )tnuoMecafruS(PVS V01 V01 V01 033 033 065 520.0 ÷Ω 800.0=3 Ω 710.0 ÷Ω 600.0=3 Ω 310.0 ÷Ω 560.0=2 Ω Am0007> Am0007> Am0007> 01 × 5.01 3.01 × 6.21 01 × 7.21 M033SS01 M033PVS01 M065PVS01 mulatanaTXVA seireSSPT )tnuoM(ecafruS( V01 V01 033 033 001.0 ÷Ω 430.0=3 Ω 060.0 ÷Ω 020.0=3 Ω Am0053> Am0053> L0.7 × W79.5 × H54.3 0010R010M733VSPT 0600R010M733VSPT mulatnaTeugarpS/yahsiV seireSD495/D595 )tnuoMecafruS( V01 V01 033 086 540.0 ÷Ω 510.0=3 Ω 090.0 ÷Ω 4= 320.0 Ω Am0064> Am0052> L2.7 × W0.6 × H5.3 T2R0100X733D495 T2R0100X786D595 mulatnaTtemeK 025T/594T/015T )tnuoMecafruS( V01 V01 033 022 530.0 ÷Ω 3= 210.0 Ω 070.0 ÷Ω 530.0=5 Ω Am0005> Am0003> L3.7 × W3.4 × H0.4 SA010M733X015T SA010M722X594T pacsoPoynaS )tnuoMecafruS(BPTV 010 220 40.0 ÷Ω 5= 800.0 Ω Am0003> L2.7 × W3.4 × H1.3

52 M 022BPT01

For technical support and more information, see inside back cover or visit www.ti.com10 Pin-Coded Output Voltage Programming of the 40-A Rated PT8100 Series Regulators The PT8100 series of Excalibur® ISRs incorporate a pin-coded programmable output voltage. In each case the desired output voltage must be selected from a preset range defined by the regulator model. Programming is achieved by selectively connecting the control inputs, “VID0–VID4” (“VID 25mV–VID3” for PT8104), pins 1–5, to the “VID Common,” pin 11.

1 The programming code

and pinout information for each model is provided in the PT8100 specifications. Some of the program codes are compatible with the “Voltage ID” codes defined by the Intel® VRM specifications. Figure 1 shows the pin-strap connections for selecting 1.5V output voltage from a PT8101. Notes: 1. The programming convention is as follows:- Logic 0: Connect to pin 11 (VID Common). Logic 1: Open circuit/open drain (See notes 2, & 4) 2. The output voltage range of the PT8101 is limited to 2.7V maximum. Above this voltage, the performance of the module is not guaranteed. Although the module will appear to function above this voltage, VID 4 (pin 5) should not be used to set the output voltage higher than 2.7V. 3. Do not connect pull-up resistors to the voltage programming pins. 4. To minimize output voltage error, use pin 11 (VID Common) as the logic “0” reference. However if the regulator is used to power a VRM compatible Figure 1 microprocessor this may not be possible. In this case either connect pin 11 to pins 17–22, or the ground plane close to the regulator. This will allow the microprocessor to use the common ground as a VID control reference. 4. If active devices are used to ground the voltage control pins, low-level open-drain MOSFETs should be used over bipolar transistors. The inherent V ce(sat) in bipolar devices introduces errors in the device’s internal voltage control circuit. Discrete transistors such as the BSS138, 2N7002, IRLML2402, are examples of appropriate devices. Active Voltage Programming: Special precautions should be taken when making changes to the voltage control progam code while the output is active. It is recommended that the ISR be powered down or placed in standby. Changes made to the program code while V out is active can induce high current transients through the device. This is the result of the electrolytic output capacitors being either charged or discharged to the new output voltage set-point. The transient current can be minimized by making only incremental c hanges to the binary code, i.e. one LSB at a time. A minimum of 100µs settling time between each program state is also recom- mended. Making non-incremental changes to VID3 and VID4 with the output enabled is discouraged. The tran- sients induced may activate the module’s over-current protection. When using active devices to program the output voltage, their state should be asserted prior to input power being applied. If this is not possible, pull STBY* (pin 6) to GND during the application of power, assert the program code, then release pin 6. The release of pin 6 will then to allow the device to initiate a soft- start power-up to the program voltage. PT8100 Series L O A D C OUT C IN VIN VO =1.5V GND VO SENSE Lin 1µH GND VID0 VID1 VID2 VID3 VID4 PT8101 4321 3 1 23–30 61 7 –22 12–16 511 VID4 – VID0 Sense VIN VOUT STBY GND VID Common BSS1381 =OFF

For technical support and more information, see inside back cover or visit www.ti.com Application Notes Using the On/Off Standby Function of the PT8100 Series of Programmable ISRs The PT8100 series of programmable ISRs incorporates an On/Off Standby function. This feature may be used to turn the regulated output of the module off while input voltage is applied. This places the module in “standby” mode. The standby control may be used for power-up sequencing, or wherever there is a requirement to control the module’s output status from another circuit. The Standby function is provided by the STBY* control, pin 6. If pin 6 is left open-circuit the regulator operates normally, providing a regulated output when a valid sup- ply voltage is applied to V in (pins 10-16) with respect to GND (pins 17-22). Connecting pin 6 to ground 1 places the regulator in standby mode 2, and reduces the input current to typically 20mA. Applying a ground signal to pin 6 prior to power-up, will inhibit the output during the period that input power is applied. When the ground signal to pin 6 is removed, the regulator initiates a soft- start to re-establish the set output voltage.

3 To ensure

that the regulator output is properly enabled, the STBY* control pin must be open circuit. Table 1 Standby Control Requirements 2 Parameter Min Typ Max VIH — Open Cct. 1 VIL –0.2V — 0.8V ISTBY –0.5mA Notes: 1. The standby on a PT8100 series regulators must be controlled with an open-collector (or open-drain) transistor (See fig. 1). Do Not use a pull-up resistor. Table 1 gives the STBY* pin parameters. The control pin has an open-circuit voltage equal to Vin. To shut the regulator output off, the control pin must be “pulled” to less than 0.8Vdc with a low-impedance sink to ground. Figure 1 Figure 2 PT8100 Series 2. In the standby mode the output of the regulator is tri- state, and the output voltage falls at the rate that the load circuit discharges the output filter capacitors. 3. When the ground signal to the Standby pin is removed, the regulator output initiates a soft-start cycle by first asserting a low impedance to ground. If an external voltage is applied to the output bus, it will sink current and possibly over-stress the part. Turn-On Time Turning Q 1 in Figure 1 off, removes the low-voltage signal at pin 6. After approximately 4ms the regulator output rises and reaches full regulation within 10ms. Fig. 2 shows the typical waveforms of a PT8101 following the prompt turn-off of Q 1. The turn-off of Q1 corresponds to the rise in Vstby. The output voltage was set to 1.8V, and the waveforms were measured with a 5V input source, and 9.25A resistive load. L O A D C OUT C IN VIN VO =1.8V GND VO SENSE 1 =Off Lin 1µH GND PT8101 4321 3 1 23–30 61 7 –22 12–16 511 VID4 – VID0 Sense V IN VOUT STBY GND VID Common BSS138 Vo (1V/Div) Iin (2A/Div) Vstby (5V/Div) HORIZ SCALE: 1ms/Div

Orderable Device Status(1) Package Type Package Drawing Pins Package Qty Eco Plan(2) Lead/Ball FinishMSL Peak Temp (3) PT8101A NRND SIP MOD ULE EKF 31 6 TBD Call TI Level-1-215C-UNLIM PT8101C NRND SIP MOD ULE EKG 31 6 TBD Call TI Level-3-215C-168HRS PT8101N NRND SIP MOD ULE EKH 31 TBD Call TI Call TI PT8102A NRND SIP MOD ULE EKF 31 6 TBD Call TI Level-1-215C-UNLIM PT8102C NRND SIP MOD ULE EKG 31 TBD Call TI Call TI PT8102N NRND SIP MOD ULE EKH 31 6 TBD Call TI Level-1-215C-UNLIM PT8103A NRND SIP MOD ULE EKF 31 TBD Call TI Call TI PT8103C ACTIVE SIP MOD ULE EKG 31 6 TBD Call TI Level-3-215C-168HRS PT8103N ACTIVE SIP MOD ULE EKH 31 6 TBD Call TI Level-1-215C-UNLIM PT8104A NRND SIP MOD ULE EKF 31 TBD Call TI Call TI PT8104C NRND SIP MOD ULE EKG 31 TBD Call TI Call TI PT8105A NRND SIP MOD ULE EKF 31 6 TBD Call TI Level-1-215C-UNLIM PT8105C NRND SIP MOD ULE EKG 31 TBD Call TI Call TI PT8105N NRND SIP MOD ULE EKH 31 TBD Call TI Call TI (1)The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontentfor the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS):TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Green (RoHS & no Sb/Br):TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on PACKAGE OPTION ADDENDUM www.ti.com 13-May-2005 Addendum-Page 1

incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. PACKAGE OPTION ADDENDUM www.ti.com 13-May-2005 Addendum-Page 2

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