PT7713 TI1 | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 9

Technical content

Features

  • 3.3V Input Voltage
  • 20-A Output Current
  • 4-bit Programmable: 1.8V to 2.55V (50mV Steps)
  • High Efficiency (90%)
  • Differential Remote Sense
  • Over-Current Protection

Description

The PT7713 Excalibur™ power module is a 20-A integrated switching regulator (ISR) housed a 27-pin space-saving copper package. Operating from a 3.3V input bus, the PT7713 produces a tightly regu- lated supply voltage that is programmable over the range, 1.8V to 2.55V. The output voltage is selected via a unique 4-bit input code that adjusts the output in steps of 50mV. This regulator is most suitable for microprocessor and DSP applications requiring core or I/O logic supply voltages as low as 1.8V. The PT7713 incorporates output short- circuit protection, and a differential remote sense to compensate for voltage drop between the regulator and load.

  • 27-Pin Space-Saving Package
  • Solderable Copper Case
  • Compatible with PT7744 20A “Current Booster” Standard Application Cin = Required 1500µF electrolytic Cout = Required 330µF electrolytic L1 = Optional 1µH input choke PT7713 4321 2 6 20-25 125 13-1927 7-11 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 1µH GND For STBY* pin: open =output enabled ground =output disabled. Pin-Out Information Pin Function

1 VID0

2 VID1

3 VID2

4 VID3

5 STBY *

6 No Connect

10 V in

11 V in

12 Rem Sense Gnd

13 GND

14 GND

15 GND

16 GND

17 GND

18 GND

19 GND

20 V out

21 V out

22 V out

23 V out

24 V out

25 V out

26 Rem Sense V out

27 Sync Out

Ordering Information

PT7713/G6F = 1.8 to 2.55 Volts PT7744/G6F = 20-A Booster * *Consult the related application note for information on current booster operation.

For technical support and more information, see inside back cover or visit www.ti.com PT7710 Product Family Comparison Input Adjust Output Product V oltage Description Method Range PT7711 5V VID 5-Bit 1.3V– 3.5V PT7712 3.3V VID 4-Bit 1.3V– 2.05V PT7713 3.3V VID 4-Bit 1.8V– 2.55V PT7714 3.3V VID 5-Bit 0.8V–1.575V PT7715 5V VID 5-Bit 1.075V–1.85V PT7716 3.3V VID 5-Bit 1.075V–1.85V PT7744 3.3V Booster — — PT7745 5V Booster — — PT7713— 3.3V 20-A Programmable Integrated Switching Regulator Programming Information VID3 VID2 VID1 VID0 Vout 1111 1 . 8 0 V 1110 1 . 8 5 V 1101 1 . 9 0 V 1100 1 . 9 5 V 1 0 1 1 2.00V 1 0 1 0 2.05V 1 0 0 1 2.10V 1 0 0 0 2.15V 0 1 1 1 2.20V 0 1 1 0 2.25V 0 1 0 1 2.30V 0 1 0 0 2.35V 0 0 1 1 2.40V 0 0 1 0 2.45V 0 0 0 1 2.50V 0 0 0 0 2.55V Logic 0 = Pin 12 potential (remote sense gnd) Logic 1 = Open circuit (no pull-up resistors) VID3 may not be changed while the unit is operating. Specifications (Unless otherwise stated, Ta =25°C, Vin =3.3V, Cin =1,500µF, Cout =330µF, Vo =2.5V, and Io =Iomax) PT7713 Characteristics Symbols Conditions Min Typ Max Units Output Current I o Ta = +25°C, Natural convection 0.1 (1) —2 0 ATa = +60°C, 200 LFM, pkg N 0.1 (1) —1 9 Input Voltage Range V in Over Io range 3.1 — 3.6 V Set-Point Voltage Tolerance V o tol All output voltages — ±10 ±25 (2) mV Temperature Variation Reg temp –40°C ≤Ta ≤+85°C, Io =Iomin — ±0.75 — %V o Line Regulation Reg line Over Vin range — ±5 — mV Load Regulation Reg load Over Io range — ±5 — mV Total Output Voltage Variation ∆Vo tol Includes set-point, line, load, —± 1± 3% V o–40°C ≤Ta ≤+85°C Efficiency η Io =10A V o =2.5V — 90 — %Vo =1.8V — 86 — Io =20A V o =2.5V — 87 — %Vo =1.8V — 82 — Vo Ripple (pk-pk) V r 20MHz bandwidth — 35 — mV pp Transient Response t tr 1A/µs load step, 50% and 100% I omax — 50 — µSec Vos Vo over/undershoot — ±100 — mV Short Circuit Threshold I sc(pk) Reset followed by auto-recovery — 32 — A Switching Frequency ƒ o Over Vin range 300 350 400 kHz STBY* Input Requirements Input High Voltage V IH Referenced to GND 2.0 — Open (3) VInput Low Voltage V IL -0.2 — 0.8 Input Low Current I IL Pin 5 to GND — 0.3 — mA Standby Input Current I in standby Pin 5 to GND — 30 — mA External Capacitance C out 330 (4) — 15,000 µF Operating Temperature Range T a Over Vin Range –40 — +85 (5) °C Storage Temperature T s — -40 — +125 °C Mechanical Shock — Per Mil-STD-883D, Method 2002.3 — 500 — G’s1 msec, Half Sine, mounted to a fixture Mechanical Vibration — Through-hole — 20 (6) — G’sMil-STD-883D, 20-2000 Hz SMT — 15 (6) — Weight — Vertical/Horizontal — 36 — 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 is not used, pin 12 must be connected to pin 13 for optimum output voltage accuracy. (3) The STBY* control (pin 5) has an internal pull-up. If it is left open-circuit, the module will operate when input power is a pplied. A low-leakage (<1µA) MOSFET must be used to control this pin. The open-circuit voltage may be as high as Vin. (4) For operation below 0°C, Cin 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 PT7715 require a minimum output capacitance of 330µF for proper operation. The PT7715 also requires an input capacitance of 1500µF, which must be rated for a minimum of 1.4Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required. For f urther information refer to the application note regarding capacitor selection for this product. Input Filter: An input filter inductor is optional for most applications. The inductor must be sized to handle 20ADC with a typical value of 1µH.

For technical support and more information, see inside back cover or visit www.ti.com Performance Characteristics, V in =3.3V (See Note A) PT7713— 3.3V

20 Amp Low Voltage Programmable

Integrated Switching Regulator Note A: All characteristic data in the above graphs has been developed from actual products tested at 25°C. This data is considered ty pical for the ISR. Note B: SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures. Typical Characteristics Safe Operating Area Curves (See Note B) Efficiency vs Output Current Ripple vs Output Current Power Dissipation vs Output Current PT7713, V in =3.3V 0 4 8 12 16 20 Iout (A ) Ambient Temperature (°C) 200LFM 120LFM 60LFM Nat conv Airflow 100 0 4 8 1 21 62 0 Iout (A ) Efficiency - % 2.5V 1.8V VOUT 0 4 8 12 16 20 Iout (A ) Ripple - mV 1.8V 2.5V VOUT 0 4 8 12 16 20 Iout (A ) Pd - Watts 1.8V 2.5V VOUT

For technical support and more information, see inside back cover or visit www.ti.com PT7710 Family, PT7744/PT7745 Capacitor Recommendations for the PT7710 Series of Regulators and Current Boosters Input Capacitors The recommended input capacitance is determined by the 1.4 ampere minimum ripple current rating and 1500µF minimum capacitance. Capacitors listed below must be rated for a minimum of twice (2 ×) the input voltage with +5V operation. Ripple current and ≤100mΩ Equivalent Series Resistance (ESR) values are the major consider- ations 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 1-1 below. Note: (N/R) is not recommended for this application, due to extremely low Equivalent Series Resistance (ESR) Table 1-1 Capacitors Characteristic Data Tantalum Characteristics Tantalum capacitors with a minimum 10-V 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 cur- rent, 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 1-1 identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple current (rms) ratings. The suggested minimum quantities per regulator for both the input and output buses are identified. This is not an extensive capacitor list. Capacitors from other vendors are available with comparible specifications. The RMS ripple current rating and ESR (Equivalent Series Resistance at 100kHz) are the critical parameters 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 )TMS(CF )laidaR(CF V61 V53 V01 V61 0022 033 065 0081 830.0 Ω 560.0 Ω 090.0 Ω 230.0 Ω Am0002 Am5021 Am557 Am0002 5.61x81 5.61x5.21 5.21x01 51x81 N222C1CFVEE QL133V1CFVEE 165A1CFUEE S281C1CFUEE detinU noC-imehC seireSZFL V52 V61 V61 033 0051 074 090.0 Ω 830.0 Ω 090.0 Ω Am067 Am0661 Am067 5.21x01 02x5.21 5.21x01 LL21X01M133BV52ZXL LL02X21M222BV61ZXL LL21X01M174BV61ZXL 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 nocsO )laidaR(SS )TMS(PVS V01 V01 033 033 520.0 ÷Ω 600.0=4 Ω 20.0 ÷Ω 500.0=4 Ω Am0089> Am0089> 5.01x01 3.8x9 R/N )etoN( M033SS01 M033PVS01 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 Application Notes Increasing the Output of the PT7710 Family of ISRs with a 20-A Compatible Current Booster The output of PT7710 family of regulators (PT7711– PT7716) can produce an additional 20-A output using a compatible current booster module. Two booster modules are available. They are the PT7744 and PT7745, which are compatible with regulators that operate off 3.3-V or 5-V input buses respectively. Refer to Table 2-1 for regulator/booster compatiblity. The booster modules are controlled directly by the regu- lator and effectively add a parallel output stage. They operate sychronously, to provide a low-noise solution. Up to two booster modules can be connected to a PT771x regulator. Each booster added increases the regulator’s output current by 20A, for up to 60A of output current. Current boosters are not stand-alone products, and can only operate with a regulator. They are housed in the same package as the regulator, and share the same mechanical outline. Except for an increase in output current, the overall performance of a regulator/booster combination is identical to that of a stand-alone regulator. For more details refer to the applicable regulator specifications. PT7710 Series, PT7744, PT7745 Figure 1-1; 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 PT7744/45 Booster 20-25 13-19 7-11 V OV IN GND S ynch In VID4 C OUT PT771x 64321 2 6 20-25 125 13-1927 7-11 V OV IN GND SNS (+) SNS (-) S ynch OutSTBY VID4 - VID0 Table 2-2; Booster Pin-Out Information Pin Function Pin Function Pin Function

1 No Connect 10 V in 19 GND

2 No Connect 11 V in 20 V out

3 No Connect 12 No Connect 21 V out

4 No Connect 13 GND 22 V out

5 No Connect 14 GND 23 V out

6 No Connect 15 GND 24 V out

8V in 17 GND 26 No Connect 9V in 18 GND 27 Sync In Notes: 1. Each booster requires the same amount of input and output capacitance as recommended for a stand-alone regulator. Consult the individual data sheet of the applicable regulator, and the related application note regarding capacitor selection for this product family. 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 20ADC at full output load. 3. The pin-out of the current booster modules include a number pins identified, “No Connect” (see Table 2-2). 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. Table 2-1; Booster Compatibility P7744 Booster PT7745 Booster Regulator (3.3V Input Bus) (5V Input Bus) PT7711  PT7712  PT7713  PT7714  PT7715  PT7716 

Orderable Device Status(1) Package Type Package Drawing Pins Package Qty Eco Plan(2) Lead/Ball FinishMSL Peak Temp (3) PT7713A NRND SIP MOD ULE ENF 27 10 TBD Call TI Level-1-215C-UNLIM PT7713C NRND SIP MOD ULE ENG 27 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), 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 28-Aug-2008 Addendum-Page 1

(TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for

applications

design. Customers are responsible for their products and components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional restrictions. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. TI products are not authorized for use in safety-critical (such as life support) where a failure of the TI product would reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in such safety-critical applications. TI products are neither designed nor intended for use in military/aerospace "enhanced plastic." Only products designated by TI as military-grade meet military specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use. TI products are neither designed nor intended for use in automotive requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products amplifier.ti.com Audio www.ti.com/audio Data Converters dataconverter.ti.com Automotive www.ti.com/automotive DSP dsp.ti.com Broadband www.ti.com/broadband Clocks and Timers www.ti.com/clocks Digital Control www.ti.com/digitalcontrol Interface interface.ti.com Medical www.ti.com/medical Logic logic.ti.com Military www.ti.com/military Power Mgmt power.ti.com Optical Networking www.ti.com/opticalnetwork Microcontrollers microcontroller.ti.com Security www.ti.com/security RFID www.ti-rfid.com Telephony www.ti.com/telephony RF/IF and ZigBee Solutions www.ti.com/lprf Video Imaging www.ti.com/video Wireless www.ti.com/wireless Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright 2008, Texas Instruments Incorporated