TPS65185_13 Datasheet, PDF (1/52 Pages) Texas Instruments – PMIC FOR E Ink® Vizplex™ ENABLED ELECTRONIC PAPER DISPLAY

TPS65185
www.ti.com
SLVSAQ8B – FEBRUARY 2011 – REVISED OCTOBER 2011
PMIC FOR E Ink^® Vizplex™ ENABLED ELECTRONIC PAPER
DISPLAY
Check for Samples: TPS65185
FEATURES
1
•2345 Single Chip Power Management Solution for
E Ink^® Vizplex™ Electronic Paper Displays
• Generates Positive and Negative Gate and
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
– User Programmable Default
– 0 V to -5.11 V
– ± 1.5% accuracy (±10 mV)
– 9-Bit Control (10-mV Nominal Step Size)
• Active Discharge on All Rails
• Flexible Power-Up and Power Down
Sequencing
• Integrated 10-Ω, 3.3-V Power Switch for
Disabling System Power Rail to E-Ink Panel
• Thermistor Monitoring
– –10°C to 85°C Temperature Range
– ±1°C Accuracy from 0°C to 50°C
• I²C Serial Interface
– Slave Address 0x68h
• Package Options:
– 48-Pin, 0.5 mm Pitch,
7 mm x 7 mm x 0.9 mm (QFN) RGZ
– 48-Pin, 0.4 mm Pitch,
6 mm x 6 mm x 0.9 mm (QFN) RSL
APPLICATIONS
• Power Supply for Active Matrix E Ink^®
Vizplex™ Panels
• EPD Power Supply
• E-Book Readers
• EPSON^® S1D13522 (ISIS) Timing Controller
• EPSON^® S1D13521 (Broadsheet) Timing
Controller
• Application Processors With Integrated or
Software Timing Controller ( OMAP™)
DESCRIPTION
The TPS65185 is a single-chip power supply designed to for E Ink^® Vizplex™ displays used in portable e-reader
applications and supports panel sizes up to 9.7 inches and greater. Two high efficiency DC/DC boost converters
generate ±16-V rails which 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 which support up to
120-mA of output current. All rails are adjustable through the I²C interface to accommodate specific panel
requirements.
Accurate back-plane biasing is provided by a linear amplifier that can be adjusted from 0 V to -5.11 V with 9-bit
control through the serial interface and can source or sink current depending on panel condition. The TPS65185
supports automatic panel kickback voltage measurement which eliminates the need of manual VCOM calibration
in the production line. The measurement result can be stored in non-volatile memory to become the new VCOM
power-up default value.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
OMAP is a trademark of Texas Instruments.
2
Vizplex is a trademark of E Ink Corporation.
3
E Ink is a registered trademark of E Ink Corporation.
4
EPSON is a registered trademark of Seiko Epson Corporation.
5
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated