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TPS65170 - LCD Bias Supply

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General Description

The TPS65170 provides a simple and economic power supply solution for a wide variety of LCD bias applications.

In typical display panel applications, the boost converter generates the display panel’s source voltage VS, the buck converter generates the system’s logic supply VLOGIC, and the two charge pump controllers regulate the external charge pumps generating the display transistors’ on and off supplies VGH and VGL.

By using external transistors to regulate the charge pump output voltage, power dissipation in the IC is significantly reduced, simplifying PCB thermal design and improving reliability.

Overview

www.ti.com LCD Bias Supply Check for Samples :TPS65170 TPS65170 SLVSA27 – OCTOBER.

Key Features

  • 1.
  • 8.6V to 14.7V Input Voltage Range.
  • 2.8A Boost Converter Switch Current Limit.
  • Boost Converter Output Voltages up to 18.5V.
  • Boost and Buck Converter Short-Circuit Protection.
  • 1.5A Buck Converter Switch Current Limit.
  • Fixed 750kHz Switching Frequency for Buck and Boost Converters.
  • Fixed Buck Converter Soft-Start.
  • Programmable Boost Converter Soft-Start.
  • Two Charge Pump Controllers to Regulate VGH and VGL.

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