PT6722

PT6722 TI | Alldatasheet

Document overview

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Technical content

Features

• 12V Input
• 14-A Output Current
• 5-Bit Programmable Output: 1.1V to 1.85V (25mV Steps)
• VRM 9.0 Compatible
• 82% Efficiency
• Standby On/Off Control PT6722—12V 14-A Low-Voltage Programmable Integrated Switching Regulator SLTS161 (Revised 10/2/2001) For STBY* pin: open = output enabled ground = output disabled. PinFunction

1 OVP Drive

2 Pwr Good

3 VID0

4 VID1

5 VID2

6 VID3

7 VID4

8 STBY*

9 Do not connect

10 V in

11 V in

12 V in

13 Rem Sense Gnd ( 2)

14 GND

15 GND

16 GND

17 GND

18 GND

19 V out

20 V out

21 V out

22 V out

23 Rem Sense Vout

Ordering Information

PT6722/G6F = 1.1 to 1.85 Volts

• Differential Remote Sense
• Over-Voltage Protection Drive
• Power Good Signal
• Short Circuit Protection
• Space Saving Solderable Case
• 4.7·106 Hrs. MTBF PT Series Suffix (PT1234x) Case/Pin Order Package Configuration Suffix Code Vertical N (ELD) Horizontal A (ELA) SMD C (ELC) (Reference the applicable package code drawing for the dimensions and PC layout) Pin-Out Information

For technical support and more information, see inside back cover or visit www.ti.com PT6722— 12V 14-A Low-Voltage Programmable Integrated Switching Regulator Logic 0 = Pin 13 potential (remote sense gnd) Logic 1 = Open circuit (no pull-up resistors) VID4 may not be changed while the unit is operating. Programming Information VID4=1 VID4=0 VID3 VID2 VID1 VID0 Vout Vout 1 1110 . 0 0 0 V 1 . 4 7 5 V 1 1101 . 1 0 0 V 1.500V 1 1 0 1 1.125V 1.525V 1 1 0 0 1.150V 1.550V 1 0 1 1 1.175V 1.575V 1 0 1 0 1.200V 1.600V 1 0 0 1 1.225V 1.625V 1 0 0 0 1.250V 1.650V 0 1 1 1 1.275V 1.675V 0 1 1 0 1.300V 1.700V 0 1 0 1 1.325V 1.725V 0 1 0 0 1.350V 1.750V 0 0 1 1 1.375V 1.775V 0 0 1 0 1.400V 1.800V 0 0 0 1 1.425V 1.825V 0 0 0 0 1.450V 1.850V PT6700 Product Family Comparison Input Adjust Program OVP/ +12V Bias Voltage Method Range P wr Good Required PT6701 5V 5-Bit 1.3V– 3.5V /GFC PT6702 3.3V 4-Bit 1.3V– 2.05V /GFC PT6703 3.3V/5V 5-Bit 1.1V– 1.85V /GFC # PT6705 5V Resistor 1. 5V–3.3V /GFC # PT6715 5V Resistor 1. 5V–3.3V PT6721 12V 5-Bit 1.3V– 3.5V /GFC PT6722 12V 5-Bit 1.1V– 1.85V /GFC # PT6725 12V Resistor 1. 5V–5.0V # –Indicates a series of products that have a nominal output voltage set-point and may be adjusted with an external resistor. Specifications (Unless otherwise stated, Ta =25°C, Vin =12V, Cout =330µF, and Io =Iomax) PT6722 Characteristic Symbol Conditions Min Typ Max Units Output Current I o Ta =+60°C, 200LFM 0.1 (1) —1 4 ATa =+25°C, natural convection 0.1 (1) —1 4 Input Voltage Range V in Over Io Range 10.8 — 13.2 VDC Set Point Voltage Tolerance V o tol — ±10 ±20 (2) mV Temperature Variation Reg temp –40° >Ta > +85°C — ±0.5 — %V o Line Regulation Reg line Over Vin range — ±2.5 ±5 mV Load Regulation Reg load Over Io range — ±2.5 ±10 mV Total Output Voltage Variation ∆Votot Includes set-point, line, load, — ±25 ±36 mV–40° >Ta > +85°C Efficiency η Io =8A V o =1.8V — 83 — %Vo =1.2V — 78 — Vo Ripple (pk-pk) V r 20MHz bandwidth — 20 — mV pp Transient Response t tr 0.1A/µs load step, 6A to 12A — 50 — µs ∆Vtr Vo over/undershoot — ±70 — mV Short Circuit Current I sc —2 03 0A Switching Frequency ƒ o Over Vin range 300 350 400 kHz Standby Control (pin 8) Input High Voltage V IH Referenced to GND (pin 14) 4.0 — Open (3) V Input Low Voltage V IL –0.2 0.4 1.0 Input Low Current I IL Pin 8 to GND — 10 – µA Standby Input Current I in standby pins 8 & 14 connected — 5 10 mA External Output Capacitance C out 330 (4) — 15,000 µF Operating T emperature Range T a Over Vin range -40 — +85 (5) °C Storage Temperature T s — -40 — +125 °C Reliability MTBF Per Bellcore TR-332 11.7 — — 10 6 Hrs50% stress, Ta =40°C, ground benign Mechanical Shock — Per Mil-Std-883D, method 2002.3, — 500 — G’s 1mS, half-sine, mounted to a fixture Mechanical Vibration — Per Mil-Std-883D, method 2007.2, — 15 (6) —G ’ s 20-2000Hz, soldered in a PC board Weight — — — 26 — 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 13 must be connected to pin 14 for optimal output voltage accuracy. (3) The Standby control (pin 8) has an internal pull-up, and if left open-circuit the module will operate when input power is applied. A small low-leakage (<100nA) MOSFET must be used to control this input. The open-circuit voltage is less than 10V . See application notes for further informa tion. (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. (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 PT6722 requires a minimum ouput capacitance of 330µF, and a minimum input capacitance of 1,000µF for proper operation. The input capacitance must be rated for a minimum of 1.6Arms of ripple current. For transient or dynamic load applications, additional input and output capacitance may b e required.The maximum allowable output capacitance is 15,000µF. For more information refer to the application note regarding cap acitor selection for this product. Input Inductor: An input filter inductor is optional for most applications. The inductor must be sized to handle 3ADC with a typical value of 1µH.

For technical support and more information, see inside back cover or visit www.ti.com 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 CharacteristicsPT6722— 12V 14-A Low-Voltage Programmable Integrated Switching Regulator PT6722 Performance; Vin =12V (See Note A) Efficiency vs Output Current Ripple vs Output Current Power Dissipation vs Output Current PT6722 Thermal Derating; Vin =12V (See Note A) Safe Operating Area; V o =1.8V 02468 1 0 1 2 1 4 Iout (A ) Efficiency - % 1.8V 1.5V 1.2V VOUT 02468 1 0 1 2 1 4 Iout (A ) Ripple - mV 1.8V 1.5V 1.2V VOUT 02468 1 0 1 2 1 4 Iout (A ) Pd - Watts 1.8V 1.5V 1.2V VOUT 02468 1 0 1 2 1 4 Iout (A ) Ambient Temperature (°C) 200LFM 120LFM 60LFM Nat conv Airflow

For technical support and more information, see inside back cover or visit www.ti.com Application Notes PT6721/6722, & PT6725 Series Capacitor Recommendations for the PT6721, PT6722, and PT6725 Series of Regulators Input Capacitors The recommended input capacitance is determined by 1.6 ampere minimum ripple current rating and 1000µF mini- mum capacitance. Tantalum capacitors listed below cannot be used on the input bus since they are not rated for 12V operation. Ripple current and Equivalent Series Resistance (ESR) values are the major considerations along with tem- perature when selecting the proper capacitor. Output Capacitors The minimum required output capacitance is 330µF with a maximum ESR less than or equal to 50mW. Failure to ob- serve this requirement may lead to regulator instability or oscillation. Electrolytic capacitors have poor ripple per- formance at frequencies greater than 400kHz, but excellent low frequency transient response. Above the ripple frequency ce- ramic decoupling capacitors are necessary to improve the transient response and reduce any microprocessor high frequency noise components apparent during higher cur- rent excursions. Preferred low ESR type capacitor part numbers are identified in the Table 1 below. roticapaC /rodneV seireS scitsiretcarahCroticapaCy titnauQ gnikroW egatloV )Fµ(eulaVt nelaviuqE)RSE( ecnatsiseRseireS mumixaMC°501 elppiR )smrI(tnerruC lacisyhP )mm(eziS tupnI suB tuptuO suB rebmuNtraProdneV cinosanaP /seireSCF seireSAF V53 V52 V52 086 0001 0001 340.0 Ω 830.0 Ω 830.0 Ω Am5561 Am5561 Am0961 02x5.21 02x5.21 51x61 186V1CFUEE 201E1CFUEE S201E1CFUEE detinU noc-imehC seireSVFL V53 V53 V61 086 0001 074 430.0 Ω 830.0 Ω 480.0 ÷Ω 240.0=2 Ω Am0961 Am0361 )2x(Am528 52x5.21 02x61 61x01 )1(R/N LL52X21M086BV53VXL LL02X61M201BV53VXL LL61X01M174BV61VXL nocihciN /seireSLP seireSMP V53 V52 V53 086 0021 0001 630.0 Ω 930.0 Ω 430.0 Ω Am0661 Am0061 Am0771 52x5.21 51x81 02x61 HHM186V1LPU 6HHM221E1LPU 6HHM201V1MPU cinosanaP seireSCF gtMecafruS V53 V52 V53 0001 0001 074 8300 Ω 830.0 Ω 340.0 Ω Am0002 Am0002 Am0961 5.61x81 5.61x81 5.61x61 N201V1CFVEE N201E1CFVEE N174V1CFVEE -nocsO seireSVS/SS V01 V01 033 033 520.0 Ω 020.0 Ω Am0053 Am0083 5.01x01 3.01x3.01 )1(R/N )1(R/N VfI(M033SS01 o )V5< VfI(033VS01 o )V5< )VS(tnuoMecafruS XVA mulatnaT seireSSPT V01 V01 033 033 1.0 ÷Ω 50.0=2 Ω 60.0 ÷Ω 30.0=2 Ω Am0052> Am0003> xL3.7 xW7.5 H1.4 )1(R/N )1(R/N 0010R010M733ESPT 0600R010M733VSPT tnuoMecafruS temeK mulatnaT 594T/015T seireS V01 V01 033 022 330.0 Ω 70.0 ÷Ω 530.0=2 Ω Am0041 Am0002> L3.7xW3.4 H0.4x )1(R/N )1(R/N SA010M733X015 SA0010M722X594T tnuoMecafruS eugarpS mulatnaT seireSD495 V010 335 40.0 Ω Am0632x L2.7 xW6 H1.4 )1(R/N1 T 2R0100X733D495 tnuoMecafruS Note: (N/R) 10V tantalums are not recommend for the input bus. Table 1 Capacitors Characteristic Data Tantalum Characteristics Tantalum capacitors may be used on the output bus but only the AVX TPS series, Sprague 593D/594/595 series, or Kemet T495/T510 series. These capacitors are recom- mended over many other tantalum types due to their high surge current, excellent power dissipation and ripple current ratings. As a caution, the TAJ Series by AVX is not recommended. This series has considerably higher ESR, reduced power dissipation, and lower ripple current capability. The TAJ series is 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 regulator for both the input and output buses are identified. This is not an extensive capacitor list. Capacitors from other vendors are available with comparable specifications. Those listed are for guidance. 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.

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