PT4452 TI | Alldatasheet

Document overview

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Technical content

Features

  • 18V to 36V Input Voltage Range
  • Programmable Output Voltage Range: 1.3V to 3.5V
  • -40° to +100°C Operating Temp
  • 1500 VDC Isolation
  • 89% Efficiency
  • Remote On/Off
  • Differential Remote Sense
  • 60A Output with PT4495 SLTS144A (Revised 5/28/2002)

Description

The PT4452 Excalibur™ DC/DC converter module combines state-of-the- art power conversion technology with un-paralleled flexibility. Incorporating high efficiency and ultra-fast transient response, these modules provide up to 30A of output current over the program- mable voltage range of 1.3V to 3.5V. This represents a full 100W output at 3.3V. The modules include a number of inbuilt features to facilitate system integration. These include output over- current shutdown (with auto reset), over-temperature pr otection, and an inhibit on/off control. A differential remote sense is also provided to com- pensate for voltage drop between the converter and load. For additional output current, one PT4452 may be operated with up to two PT4495 compatible booster modules. Each PT4495 adds an additional 30A of output current capability.

  • Over-Current Protection (Shutdown with Auto-Reset)
  • Over-Temperature Protection
  • Over-Voltage Protection
  • Space-Saving Package
  • Solderable Copper Case
  • Safety Approvals: UL 60950 CSA 22.2 950 VDE EN60950 Pending L O A D PT4452 +V sns +V out -V out -Vsns 8-13 14-19 202522 2423 VID0 - VID4 +V in –V in InhibitC 1 PROGRAMMING PINS +V OUT +V IN –V IN –V OUT C o
  • C o = Optional 330µF electrolytic capacitor
  • C 1 = Optional 33µF, 100V electrolytic capacitor
  • C 2 = Optional 1µF, 100V ceramic capacitor
  • Programming pins, VID0–VID4, are shown configured for Vo =3.3V
  • For normal operation, pin 3 (Inhibit) must be connected to –Vin.

Ordering Information

PT4452/G6F = 1.3 to 3.5 Volts PT4495/G6F = 30-A Booster PT Series Suffix (PT1234x) Case/Pin Order Package Configuration Suffix Code Vertical N (EKD) Horizontal A (EKA) SMD C (EKC) (Reference the applicable package code draw- ing for the dimensions and PC board layout) Pin-Out Information Pin Function 1+ V in 2– V in

3 Inhibit

4V r † 5V a †

6 No Connect

7 (+)Remote Sense 8+ V out 9+ V out 10 +Vout 11 +Vout 12 +Vout 13 +Vout Pin Function 14 –V out 15 –V out 16 –V out 17 –V out 18 –V out 19 –V out 20 (–)Remote Sense

21 VID0

22 VID1

23 VID2

24 VID3

25 VID4

26 DRV †

PT4452—24V 100-W 30-A Programmable Isolated DC/DC Converter † Pins 4, 5, & 26 are used for booster applications. For stand-alone operation, leave open circuit.

For technical support and more information, see inside back cover or visit www.ti.com PT4452— 24V 100-W 30-A Programmable Isolated DC/DC Converter Programming Information 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 Logic 0 = Connect to (–)Remote Sense, pin 20 Logic 1 = Open circuit (no pull-up resistors) Specifications (Unless otherwise stated, Ta =25°C, Vin =24V, Vo =3.3V, Co =0µF, and Io =Iomax) PT4452 Characteristic Symbol Conditions Min Typ Max Units Output Current I o Over Vin range 0 — 30 A Input Voltage Range V in Over Io Range 18 24 36 VDC Set Point Voltage Tolerance V o tol — ±1 ±1.5 %V o Temperature Variation Reg temp –40° ≤Tc ≤ +100°C, Io =0 — ±0.5 — %V o Line Regulation Reg line Over Vin range — ±0.1 ±1 %V o Load Regulation Reg load Over Io range — ±0.2 ±1 %V o Total Output Voltage Variation ∆Votot Includes set-point, line, load, —± 2± 3% V o–40° ≤Tc ≤ +100°C Efficiency η Io =15A V o =3.3V — 89 — Vo =2.5V — 87 — % Vo =1.5V — 81 — Vo Ripple (pk-pk) V r 20MHz bandwidth V o >2.0V — 55 75 mVppVo ≤2.0V — 45 55 Transient Response t tr 0.1A/µs load step, 50% to 75% Iomax — N/A — µs ∆Vtr Vo over/undershoot — 1 — %V o 1A/µs load step, 50% to 100% Iomax — 75 — µs Vo over/undershoot — ±5 — %V o Current Limit Threshold I lim thld V in =18V, shutdown with auto-restart — 35 — A Current Share Tolerance I shr tol with PT4495 booster — ±10 — % Over-Voltage Protection OVP Shutdown and latch off — 125 — %V o Switching Frequency ƒ s Over Vin range 270 300 350 kHz Under-Voltage Lockout UVLO — 17 — V Inhibit (Pin 3) Referenced to –V in (pin 2) Input High Voltage V IH 2.5 — Open (1) V Input Low Voltage VIL –0.5 — +0.8 Input Low Current IIL — –0.2 — mA Standby Input Current I in standby pins 3 & 2 connected — 4 10 mA Internal Input Capacitance C in —3 —µ F External Output Capacitance C out Between +Vo and –Vo 0 — 10,000 µF Isolation Voltage Input–output/input–case 1500 — — V Capacitance Input to output — 1100 — pF Resistance Input to output 10 — — M Ω Operating Temperature Range T c Case temperature, over Vin range -40 — +115 (2) °C Over-Temperature Shutdown OTP Case temperature, auto reset — 120 — °C Storage Temperature T s — -40 — +125 °C Reliability MTBF Per Bellcore TR-332 1.4 — — 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 — Mil-Std-883D, Method 2007.2 Horizontal — 20 (3) —G ’ s 20-2000Hz, pcb mounted Weight — — — 90 — grams Flammability — Materials meet UL 94V-0 Notes: (1) The Inhibit (pin 3) has an internal pull-up, which if left open circuit allows the converter to operate when input power is applied. The open-circuit is limited to 6.5V . Refer to the application notes for interface considerations. (2) See Safe Operating Area curves or contact the factory for the appropriate derating. (3) The case pins on through-hole pin configuration (suffix A) must be soldered. For more information see the applicable package outline drawing.

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 Efficiency vs Output Current Ripple vs Output Current Power Dissipation vs Output Current Typical CharacteristicsPT4452— 24V 100-W 30-A Programmable Isolated DC/DC Converter Stand Alone, No Heatsink Safe Operating Area, Vin =24V (See Note B)PT4452 Performance Characteristics (See Note A) 0 5 10 15 20 25 30 Iout (A) Pd - Watts 18.0V 24.0V 36.0V VIN 0 5 10 15 20 25 30 Iout (A ) Ambient Temperature (°C) 500LFM 400LFM 300LFM 200LFM 100LFM Nat conv Airflow 100 0 5 10 15 20 25 30 Iout (A ) Efficiency - % 3.3V 2.5V 1.5V VOUT 100 0 5 10 15 20 25 30 Iout (A ) Ripple - mV 3.3V 2.5V 1.5V VOUT

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