PT7761-5V_09 TI1 | Alldatasheet

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Technical content

Features

  • Single Device: 40ADC
  • +5V Input
  • 5-bit Programmable: 1.3V to 3.5V
  • 90% Efficiency
  • Differential Remote Sense
  • Short-Circuit Protection
  • Space-Saving Package Cin = Required 1500µF electrolytic Cout = Required 330µF electrolytic Lin = Optional 1µH input choke

Ordering Information

PT7761/G6F = 1.3 to 3.5V Regulator * PT7769/G6F = 40-A Current Booster * Consult application notes for information on Current Booster operation 40-A Programmable Integrated Switching Regulator Module SLTS152 (Revised 10/24/2001) PT7761 4321 3 1 23–30 156 16–227 9–14 L O A D C OUT +C IN PROGRAMMING PINS V IN V OUT SYNC OUT GND REMOTE SENSE(+) REMOTE SENSE(–)STBY* VID0 VID1 VID2 VID3 LIN 1µH GND VID4 5 mand high power supply currents at low output voltages. The PT7761 is programmable from 1.3V to 3.5V via a 5-bit input, which is compatible with Intel’s Pentium® series microprocessors. The PT7761’s features include a momentary-interrupt style of short- circuit protection, a standby control, and a differential remote sense to compensate for voltage drop between the ISR and load. For additional output current the PT7761 can operate with up to three current boosters.

  • Solderable Copper Case
  • “Current Booster” Compatible
  • Shutdown Control 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.com VID4=1 VID4=0 VID3 VID2 VID1 VID0 Vout Vout 1 1 1 1 2.0V 1.30V 1 1 1 0 2.1V 1.35V 1 1 0 1 2.2V 1.40V 1 1 0 0 2.3V 1.45V 1 0 1 1 2.4V 1.50V 1 0 1 0 2.5V 1.55V 1 0 0 1 2.6V 1.60V 1 0 0 0 2.7V 1.65V 0 1 1 1 2.8V 1.70V 0 1 1 0 2.9V 1.75V 0 1 0 1 3.0V 1.80V 0 1 0 0 3.1V 1.85V 0 0 1 1 3.2V 1.90V 0 0 1 0 3.3V 1.95V 0 0 0 1 3.4V 2.00V 0 0 0 0 3.5V 2.05V * For STBY* pin: Open =Output Enabled Ground =Output Disabled Pin Function

1 VID0

2 VID1

4 VID3

5 VID4

6 STBY *

7 Sync

8 No Connect

10 V in

Logic 0 = Pin 15 potential (Remote Sense GND) Logic 1 = Open circuit (no pull-up resistors) VID3 and VID4 may not be changed while the unit is operating. PT7761— 5V 40-A Programmable Integrated Switching Regulator Module Pin Function

11 V in

12 V in

14 V in

15 Rem Sense GND 2

16 GND

17 GND

18 GND

19 GND

20 GND

21 GND

22 GND

24 V out

25 V out

26 V out

27 V out

28 V out

29 V out

31 Rem Sense V out

Pin-Out InformationProgramming Information Specifications (Unless otherwise stated, T a =25°C, Cin =1,500µF, Cout =330µF, Vin =5V, Vo =3.3V, & Io =Iomax) PT7761 Characteristics Symbols Conditions Min Typ Max Units Output Current I o Ta =25°C, Natural convection 0.1 (1) —4 0 ATa =60°C, 200LFM, Pkg N 0.1 (1) —38 Input Voltage Range V in Over Io range 4.5 — 5.5 V Set-Point Voltage Tolerance V otol All output voltages — — ±25 (2) mV Temperature Variation ∆Regtemp –40°C≤ Ta ≤85°C, Io =Iomin — ±0.75 — %V o Line Regulation ∆Regline Over Vin range — ±5 — mV Load Regulation ∆Regload Over load range — ±5 — mV Total Output Variation ∆Votol Includes set-point, line, load, —± 1± 3% V o–40°C ≤Ta ≤ +85°C Efficiency η Io =20A V o = 3.3V — 90 — Vo = 2.5V — 89 — % Vo = 1.8V — 83— Io =40A V o = 3.3V — 86 — Vo = 2.5V — 85 — % Vo = 1.8V — 80 — Vo Ripple (pk-pk) V r 20MHz bandwidth — 50 — mV Transient Response t tr 1A/µs load step from 50% to 100% I omax — 50 — µSec ∆Vtr Vo over/undershoot — 100 — mV Short Circuit Threshold I sc(pk) Reset and auto-recovery — 75 — A Switching Frequency ƒ s Over Vin and Io ranges 300 350 400 kHz Standby Control (pin 6) Input High Voltage V IH Referenced to GND (pins 16–22) 2 — Open (3) V Input Low Voltage V IL -0.2 — 0.8 Input Low Current I IL Pin 6 to GND — 0.4 — mA Quiescent Current I in stby Pin 6 to GND — 30 — mA External Output Capacitance C out Between +Vo and GND 330 — 30,000 µF Operating Temperature Range T a Over Vin Range –40 (4) —+ 8 5 (5) °C Storage Temperature T s — -40 — +125 °C Mechanical Shock Mil-STD-883D, Method 2002.3 1 msec, Half Sine, mounted to a fixture — TBD — G’s Mechanical Vibration Vertical — TBD (6) — G’sMil-STD-883D, 20-2000 Hz Horizontal — TBD (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) If the Remote Sense Ground (Pin 15) is not used, it must be connected to pin 16 for optimum output voltage accuracy. (3) The Standby control (pin 6) has an internal pull-up, and if left open-circuit the module will operate when input power is ap plied. (4) For operation below 0°C, C in and Cout 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 case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable p ackage outline drawing. External Capacitors: The PT7761 series requires a minimum ouput capacitance of 330µF for proper operation. The PT7761 also requires a minimum input capacitance of 1,500µF, which must be rated for a minimum of 1.4Arms of ripple current. For transient or dynamic load applications, additio nal capacitance may be required. For further information refer to the application note regarding capacitor selection for this product. Input Inductor: An input inductor is optional for most applications. The input inductor must be sized to handle 30ADC with a typical value of 1 µH.

For technical support and more information, see inside back cover or visit www.ti.com Note A: Characteristic data in the above graphs has been developed from actual products tested at 25°C. This data is considered typcia l for the ISR. Note B: SOA curves represent conditions at which internal components are at or below manufacturer’s maximum operating temperatures. Typical CharacteristicsPT7761— 5V 40-A Programmable Integrated Switching Regulator Module 100 0 8 16 24 32 40 Iout (A ) Efficiency - % 3.3V 2.5V 1.8V VOUT 0 8 16 24 32 40 Iout (A ) Ripple - mV 2.5V 1.8V 3.3V VOUT 0 8 16 24 32 40 Iout (A ) Pd - Watts 3.3V 2.5V 1.8V VOUT Characteristic Data, VIN =5VDC (See Note A) Efficiency vs. Output Current Ripple Voltage vs. Output Current Power Dissipation vs. Output Current Safe Operating Area Curves (See Note B) 0 8 16 24 32 40 Iout (A ) Ambient Temperature (°C) 400LFM 200LFM Nat conv Airflow PT7761 @Vin =5V

For technical support and more information, see inside back cover or visit www.ti.com Application Notes Increasing the PT7761 Output Current with the PT7769 Compatible Current Booster The PT7769 is a 40-A “Current Booster” module for the PT7761 regulator. The booster is controlled directly by the regulator, and effectively adds a parallel output stage. This allows the system to run sychronously, providing a low noise solution. Up to three booster modules can be connected to a single regulator. Each booster increases the available output current by 40A. Combinations of a regulator and booster modules can supply power for virtually any multi-processor application. A current booster is not a stand-alone product, and can only operate with a regulator. It is housed in the same package as its compatible regulator, and shares the same mechanical outline. Except for an increase in output current, the overall performance of a PT7761/booster combination is identical to that of a stand-alone regulator. Refer to the appro- priate data sheet for the performance specifications. PT7761, PT7769 Current Booster Application Schematic C IN C OUT LOAD V IN VID0 VID1 VID2 VID3 V OUT GNDGND STBY* LIN 1µH REMOTE SENSE (–) REMOTE SENSE (+ ) PROGRAMMING PINS C IN LIN 1µH VID4 C OUT PT7761 4321 3 1 23 –30 1561 6 –22 9–14 S ync GND Sns (+) Sns (–) V OUTV IN Stby VID0 - VID4 PT7769 23 –30 16 –22 9–14 S ynch V OUT GND V OUT To Additional Boosters Table 1; PT7769 Pin-Out Information Pin Function Pin Function Pin Function

1 No Connect 11 V in 21 GND

2 No Connect 12 V in 22 GND

3No Connect 13 V in 23V out

4 No Connect 14 V in 24 V out

5 No Connect 15 No Connect 25 V out

6 No Connect 16 GND 26 V out

7 Sync 17 GND 27 V out

8 No Connect 18 GND 28 V out

10 V in 20 GND 30 V out

31 No Connect

Notes: 1. Each booster requires the same amount of input and output capacitance as recommended for a stand-alone regulator. See the Standard Application schematic and the respective input/output filter notes in the PT7761 product data sheet. Recommendations on specific capacitor types are also detailed in the application note, “Capacitor Recommendations for the PT7761 Integrated Switching Regulator.” 2. The 1-µH filter choke located at the input of each regulator and booster module (L in) is optional for most applications. If specified, each inductor must be sized to handle 30ADC at full output load. 3. The pin-out of the current booster modules include a number pins identified, “No Connect” (see Table 1). These pins are not connected internally to the module but must be soldered to a pad to preserve the unit’s mechanical integrity. 4. A similar PCB footprint and trace layout between the regulator and each booster will facilitate current sharing between all modules.

For technical support and more information, see inside back cover or visit www.ti.com PT7761, PT7769 Capacitor Recommendations for the PT7761 Integrated Switching Regulator Input Capacitors The recommended input capacitance is determined by 1.4 ampere minimum ripple current rating and 1500µF minimum capacitance. Capacitors listed below must be rated for a minimum of 2x 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 330µF with a maximum ESR less than or equal to 100m Ω . Failure to observe this requirement may lead to regulator instability or oscillation. Electrolytic capacitors have poor ripple perfor- mance 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 microprocessor high frequency noise components apparent during higher current excursions. Preferred low ESR type capacitor part numbers are identified in the Table 1 below. Note: (N/R) is not recommended for this application, due to extremely low Equivalent Series Resistance (ESR) Table 1 Capacitors Characteristic Data Tantalum Characteristics Tantalum capacitors with a minimum 10V rating are recommended on the output bus, but only the AVX TPS series, Sprague 594/595 series, or Kemet T495/T510 series. These AVX, Sprague, and Kemet 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 than the TPS series when deter- mining 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 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 optimum regulator performance and long capacitor life. roticapaC /rodneV seireS scitsiretcarahCroticapaCy titnauQ gnikroW egatloV )Fµ(eulaVt nelaviuqE)RSE( ecnatsiseRseireS mumixaMC°501 elppiR )smrI(tnerruC lacisyhP )mm(eziS tupnI suB tuptuO suB rebmuNrodneV cinosanaP CF gtMecafruS AF V61 V53 V01 V61 0022 033 086 0081 830.0 Ω 560.0 Ω Ω090.0 Ω230.0 Am0002 Am5021 Am557 Am0002 5.61x81 5.61x5.21 5.21x01 51x81 N222C1CFVEE QL133V1CFVEE 186A1AFUEE A281C1AFUEE detinU noC-imehC seireSVFL V52 V61 V61 033 0022 074 480.0 Ω 830.0 Ω 480.0 ÷Ω 240.0=2 Ω Am528 Am0361 2xAm528 61x01 02x61 61x01 LL61X01M133BV52VXL LL02X61M222BV61VXL LL61X01M174BV61VXL nocihciN seireSLP seireSMP V01 V01 V52 086 0081 033 090.0 Ω 440.0 Ω 590.0 Ω Am077 Am0241 Am057 51x01 51x61 51x01 6HHM186A1LPU 6HHM281A1LPU 6HPM133E1LPU SSnocsO VS V01 V01 033 033 520.0 ÷Ω 600.0=4 Ω 20.0 ÷Ω 500.0=4 Ω Am0089> Am0089> 5.01x01 6.21x3.01 R/N )etoN( M033SS01 M033VS01 )tnuoMecafruS( XVA mulatanaT seireS-SPT V01 V01 033 033 1.0 ÷Ω 20.0=5 Ω 60.0 Ω Am0053 Am6281 xL3.7 xW3.4 H1.4 0010R010M733VSPT 0600R010M733VSPT eugarpS mulatnaT D495/D595 V01 V01 033 086 540.0 ÷Ω 110.0=4 Ω 90.0 Ω Am0054> Am0661> xL3.7 xW7.5 H0.4 T2R0100X733D495 T2R0100X786D595 )tnuoMecafruS( temeK mulatnaT 594T/015T seireS V01 V01 033 022 530.0 Ω 70.0 Ω÷ 530.0=2 Ω Am0002 Am0002> L3.7xW3.4 H0.4x SA010M733X015 SA010M722X594T )tnuoMecafruS( pacsoPoynaS BPT V010 224 0.0 Ω Am0003x L2.7 xW3.4 H1.3

62 M 022BPT01

)tnuoMecafruS(

For technical support and more information, see inside back cover or visit www.ti.com Pin-Coded Output Voltage Adjustment of PT7761 “Excalibur™” ISRs The PT7761 Excalibur power module incorporates a pin-coded output voltage control. These regulators in- clude five control pins, identified VID0–VID4 (pins 1–5) respectively. By selectively grounding VID0-VID4, the output voltage of this regulator can be programmed in incremental steps over the output voltage range, 1.3V to 3.5V. The program code and voltage range is designed to be compatible with the “Voltage ID” specification defined for popular microprocessors. Refer to Figure 1 for the connection schematic, and the applicable data sheet for the program code. Notes: 1. The programming convention is as follows:- Logic 0: Connect to pin15 (Remote Sense Ground). Logic 1: Open circuit/open drain (See notes 2, & 4) 2. Do not connect pull-up resistors to the voltage programming pins. 3. Use pin 15 (Rem Sense Gnd) as the logic “0” reference. While the regular ground (pins 16–22) can also be used for programming, doing so will degrade the load regulation of the product. If the remote sense ground is not used, pin 15 must be connected to pin 16 for optimum output voltage accuracy. Figure 1 4. If active devices are used to ground the voltage control pins, low-level open drain MOSFET devices 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 unit is powered. It is highly recommended that the ISR be either powered down or held in standby. Changes made to the program code while V out is enabled induces high current transients through the device. This is the result of the electrolytic output capacitors being either charged or dis- charged to the new output voltage set-point. The transient current can be minimized by making only incremental changes to the binary code, i.e. one LSB at a time. A minimum of 100µs settling time between each program state is also recommended. Making non-incremental changes to VID3 and VID4 with the output enabled is discouraged. If they are changed, the transients induced can overstress the device. If the program code cannot be asserted prior to power-up, pull pin 6 (STBY) to GND during the period that the input voltage is applied. The release of pin 6 will then to allow the device to initiate a soft-start power-up to the program voltage. PT7761 C out C in 1µH (Optional) +5V COM STBY L O A D PT7761 4321 3 1 23 – 30 1561 6 – 22 9 – 14 S ync GND Sns (+ ) Sns (–) V OUTV IN Stb y VID0 - VID4

Orderable Device Status(1) Package Type Package Drawing Pins Package Qty Eco Plan(2) Lead/Ball FinishMSL Peak Temp (3) PT7761A NRND SIP MOD ULE EKF 31 6 TBD Call TI Level-1-215C-UNLIM PT7761N NRND SIP MOD ULE EKH 31 6 TBD Call TI Level-1-215C-UNLIM PT7769A NRND SIP MOD ULE EKF 31 TBD Call TI Call TI PT7769C NRND SIP MOD ULE EKG 31 TBD Call TI Call TI PT7769N NRND SIP MOD ULE EKH 31 6 TBD Call TI Level-1-215C-UNLIM (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), Pb-Free (RoHS Exempt), 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. Pb-Free (RoHS Exempt):This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. 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 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 3-Jul-2009 Addendum-Page 1

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