1 Features

• Single Chip Power-Management Solution for
  E Ink®Vizplex™ Electronic Paper Displays
• Generates Positive and Negative Gates, Source Driver Voltages, and Back-Plane Bias From a Single, Low-Voltage Input Supply
• Supports 9.7 Inch and Larger Panel Size
• 3-V to 6-V Input Voltage Range
• Boost Converter for Positive Rail Base
• Inverting Buck-Boost Converter for Negative Rail Base
• Two Adjustable LDOs for Source Driver Supply
  • LDO1: 15 V, 120 mA (VPOS)
  • LDO2: –15 V, 120 mA (VNEG)
• Accurate Output Voltage Tracking
  • VPOS – VNEG = ±50 mV
• Two Charge Pumps for Gate Driver Supply
  • CP1: 22 V, 10 mA (VDDH)
  • CP2: –20 V, 12 mA, (VEE)
• Adjustable VCOM Driver for Accurate Panel-Backplane Biasing
  • 0 V to –5.11 V
  • ± 1.5% accuracy (±10 mV)
  • 9-Bit Control (10-mV Nominal Step Size)
• Integrated 10-Ω, 3.3-V Power Switch for Disabling System Power Rail to E-Ink Panel

2 Applications

• Power Supply for Active Matrix E Ink Vizplex Panels
• EPD Power Supplies
• E-Book Readers
• EPSON® S1D13522 (ISIS) Timing Controller
• EPSON® S1D13521 (Broadsheet) Timing Controller
• Application Processors With Integrated or Software Timing Controller (OMAP™)

3 Description

The TPS65186 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 supplies that support up to 120-mA of output current. All rails are adjustable through the I²C interface to accommodate specific panel requirements.

1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Schematic