TPS65185_16 Datasheet, PDF (1/62 Pages) Texas Instruments – PMIC for E Ink Vizplex Enabled Electronic Paper Display

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TPS65185, TPS651851
SLVSAQ8D – FEBRUARY 2011 – REVISED DECEMBER 2016
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 (TPS65185), 3-V to 5.9-V (TPS651851)
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
V_IN≥ 3.6 V (VPOS)
– TPS651851 LDO2: –15 V, 200 mA at
V_IN≥ 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
VQFN (48)
VQFN (48)
7.00 mm × 7.00 mm
6.00 mm × 6.00 mm
TPS651851
VQFN (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
(3.0 V-6.0 V)
From Input
Supply
(3.0 V-6.0 V)
I/O Control
VIN
TS
VN _SW
VN
VB_SW
VB
Temp
Sensor
DCDC2
DCDC1
VCOM
Positive
Charge
Pump
LDO1
VCOM
LDO2
Negative
Charge
Pump
VDDH_D
VDDH_ DRV
VDDH_FB
VPOS
VCOM
VCOM_ PANEL
VNEG
VEE_D
VEE_ DRV
VEE_FB
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.