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Texas Instruments TPSM843A22 12A Buck Power Module

Texas Instruments TPSM843A22 12A Buck Power Module is a high-efficiency 18V, 12A synchronous buck module employing an internally compensated, fixed-frequency advanced current mode (ACM) control architecture. This device continually operates under FCCM but generates output voltages from 0.5V to 7V. The module can provide high efficiency while operating at a switching frequency of up to 2.2MHz. The Texas Instruments TPSM843A22 is in a 6.5mm x 7.5mm x 4mm over-molded package, which makes it optimal for designs requiring a small solution size. Additional features include a high-accuracy voltage reference, selectable soft-start times, monotonic start-up into pre-biased outputs, selectable current limits, adjustable UVLO through the EN pin, and a full suite of fault protections.

Features

  • Fixed-frequency, internally compensated advanced current mode (ACM) control
  • Integrated 6.5mΩ and 2mΩ MOSFETs, inductor, and basic passives
  • 4V to 18V input voltage range
  • 0.5V to 7V output voltage range
  • True differential remote sense amplifier (RSA)
  • Three selectable PWM ramp options to optimize the control loop performance
  • Five selectable switching frequencies of 500kHz, 750kHz, 1MHz, 1.5MHz, and 2.2MHz
  • 0.5V, ±0.5% voltage reference accuracy over the full temperature range
  • Synchronizable to an external clock
  • 1ms, 2ms, 4ms, and 8ms selectable soft-start times
  • Monotonic start-up into pre-biased outputs
  • Enable with adjustable input undervoltage lockout
  • Power-good output monitor
  • Output overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protection
  • –40°C to 125°C operating junction temperature
  • 6.5mm × 7.5mm × 4.0mm, 25-pin over-molded QFN package
  • Lead-free (RoHS compliant)
  • Pin compatible with the 20A (TPSM843B22) and 16A (TPSM843A26)

Applications

  • Wireless and wired communications infrastructure equipment
  • Optical and fiber networks
  • Test and measurement
  • Medical and healthcare

Functional Block Diagram

Block Diagram - Texas Instruments TPSM843A22 12A Buck Power Module
Published: 2023-11-07 | Updated: 2024-01-25