Texas Instruments TPS61178x Integrated Synchronous Boost Converters

Texas Instruments TPS61178x Integrated Synchronous Boost Converters have a built-in gate driver for load disconnect. Each device integrates two low on-resistance power FETs: A 16mΩ switching FET and a 16mΩ rectifier FET. The TPS61178x uses the fixed frequency peak current mode control with the slope compensation integrated. The TPS61178 enters the auto PFM mode at the light load, while the TPS611781 is in forced PWM mode. The TPS61178x could isolate the output from the input side when shut down. Once the output is shorted, it enters into the hiccup mode to lower the thermal stress and can recover automatically after the short releases. The Texas Instruments TPS61178x also has OVP and thermal protection to avoid fault operation.

Features

  • 2.7V to 20V input voltage range 
  • 4.5V to 20V output voltage range 
  • Programmable switch peak current, up to 10A
  • Two 16mΩ FETs integrated
  • Efficiency up to 96%: VIN = 7.2V, VOUT = 16V, IOUT = 2A
  • An adjustable switching frequency of up to 2.2MHz
  • External clock synchronization (200kHz to 2.2MHz)
  • Gate driver for load disconnect
  • Hiccup short protection
  • Overvoltage protection
  • Auto PFM operation - TPS61178
  • Forced PWM mode - TPS611781
  • 3.0mm x 3.5mm 13-pin VQFN Hotrod package

Applications

  • Portable speaker
  • Source driver of LCD display
  • Supply for the power amplifier
  • Supply for the motor driver
  • USB Type-C™ Power Delivery

Functional Block Diagram

Block Diagram - Texas Instruments TPS61178x Integrated Synchronous Boost Converters
Publicado: 2017-04-19 | Actualizado: 2024-05-02