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TPS65120 - SINGLE-INDUCTOR QUADRUPLE-OUTPUT TFT LCD POWER SUPPLY

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General Description

The TPS6512x DC-DC converter supplies all three voltages required by amorphous-silicon (a-Si) and low-temperature poly-silicon (LTPS) TFT-LCD displays.

The compact layout of the TPS6512x uses a single inductor to generate independently-regulated positive and negative outputs.

A free-running variable peak current PWM control scheme time-multiplexes the inductor between outputs.

Overview

www.ti.com TPS65120, TPS65121, TPS65123, TPS65124 SLVS531A – JUNE 2004 – REVISED MARCH 2005 SINGLE-INDUCTOR QUADRUPLE-OUTPUT TFT LCD POWER.

Key Features

  • Main Output, VMAIN.
  • Adjustable Voltage, 3.0 V to 5.6 V/25 mA.
  • Post-Regulated for Low Ripple (5mVPP).
  • ±0.8% Typical Accuracy.
  • Efficiency up to 83%.
  • Positive Output, VGH.
  • Adjustable Voltage up to 20 V/2 mA.
  • ±3% Typical Accuracy.
  • Negative Output, VGL.
  • Adjustable Voltage down to -18 V/2 mA.
  • ±3% Typical Accuracy.
  • Auxiliary 1.8 V/3.3 V Linear Regulator.
  • Automatic or Programmable Power.

More Datasheets from Texas Instruments

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