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TPS65185, TPS651851
SLVSAQ8G – FEBRUARY 2011 – REVISED SEPTEMBER 2017
TPS65185x PMIC for E Ink® Vizplex™ Enabled Electronic Paper Display
1 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 Supply
• 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
Base • 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 LDO2: –15 V, 200 mA at VIN ≥ 3.6 V (VNEG)
• Accurate Output Voltage Tracking
– VPOS – VNEG = ±50 mV • Two Charge Pumps for Gate Driver Supply
– CP1: 22 V, 15 mA (VDDH)
– CP2: –20 V, 15 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) • Active Discharge on All Rails • 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
• Electronic Paper Display (EPD) Power Supplies • E-Book Readers • Dual-Display Phone and Tablets • Application Processors With Integrated or
Software Timing Controller (OMAP™)
3 Description
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 supplies that support up to 120/200 mA (TPS65185/TPS651851) of output current. All rails are adjustable through the I2C interface to accommodate specific panel requirements.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS65185
RGZ (48) RSL (48)
7.00 mm × 7.00 mm 6.00 mm × 6.00 mm
TPS651851
RSL (48)
6.00 mm × 6.00 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
Typical Application Schematic
From Input Supply
(3 V to 6 V) From Input
Supply (3 V to 6 V)
I/O Control
VIN VB_SW
VB VN_SW
VN TS
DCDC1
DCDC2
Temperature Sensor
VCOM
Positive Charge Pump
LDO1
VCOM
LDO2
Negative Charge Pump
Load Switch
VDDH_D VDDH_DRV VDDH_FB VPOS VCOM VCOM_PANEL
VNEG
VEE_D VEE_DRV VEE_FB
VIN3P3 V3P3
Copyright © 2017, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA.
TPS65185, TPS6.