TPS651851 Overview
The TPS65185x device is a single-chip power supply designed to for E Ink Vizplex displays used in portable e-reader applications, and the device supports panel sizes up to 9.7 inches and greater. Two high efficiency DC-DC boost converters generate ±16-V rails that are boosted to 22 V and 20 V by two change pumps to provide the gate driver supply for the Vizplex panel. Two tracking LDOs create the ±15-V source driver...
TPS651851 Key Features
- 1 Single Chip Power-Management Solution for E Ink® Vizplex™ Electronic Paper (E-Paper) Displays
- Generates Positive and Negative Gates, and Source Driver Voltages and Back-Plane Bias From a Single, Low-Voltage Input S
- Supports 9.7-Inch and Larger Panel Sizes
- 3-V to 6-V Input Voltage Range
- Boost Converter for Positive Rail Base
- Inverting Buck-Boost Converter for Negative Rail
- Two Adjustable LDOs for Source Driver Supply
- TPS65185 LDO1: 15 V, 120 mA (VPOS)
- TPS65185 LDO2: -15 V, 120 mA (VNEG)
- TPS651851 LDO1: 15 V, 200 mA at VIN ≥ 3.6 V (VPOS)
TPS651851 Applications
- Power Supply for Active Matrix E Ink Vizplex Panels