Product details


Regulated outputs (#) 4 Vin (Min) (V) 3 Vin (Max) (V) 5.9 Iout (Max) (A) 0 Step-down DC/DC converter 0 Step-up DC/DC converter 2 LDO 2 Iq (Typ) (mA) 5.5 Features Enable, Enable Pin, I2C Control, Power Sequencing, Thermal Shutdown, Soft-Start Adjustable Operating temperature range (C) -10 to 85, -40 to 85 Rating Catalog Processor name Vizplex Processor supplier E-ink Shutdown current (ISD) (Typ) (uA) 3.5 Configurability Factory programmable open-in-new Find other Multi-channel ICs (PMIC)

Package | Pins | Size

VQFN (RGZ) 48 49 mm² 7 x 7 VQFN (RSL) 48 36 mm² 6 x 6 open-in-new Find other Multi-channel ICs (PMIC)


  • 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
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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.

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; it can source or sink current depending on panel condition. The TPS65185x supports automatic panel kickback voltage measurement, which eliminates the need for 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.

TPS65185 is available in two packages, a 48-pin 7-mm × 7-mm2 VQFN (RGZ) with 0.5-mm pitch, and a 48-pin 6-mm × 6-mm2 VQFN (RSL) with 0.4-mm pitch. The TPS651851 is available in a 48-pin 6-mm × 6-mm2 VQFN (RSL) with 0.4-mm pitch.

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TPS65186 ACTIVE PMIC for E-Ink® Vizplex™ Enabled Electronic Paper Display Active discharge on VCOM and V3P3 power switch.

Technical documentation

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Type Title Date
* Data sheet TPS65185x PMIC for E Ink® Vizplex™ Enabled Electronic Paper Display datasheet (Rev. G) Sep. 21, 2017
Application note Understanding Undervoltage Lockout in Power Devices (Rev. A) Sep. 19, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
User guide TPS65185 Evaluation Module (Rev. A) Nov. 16, 2017
Technical article Use PMICs to extend battery life in portable applications Sep. 08, 2016

Design & development

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Hardware development

document-generic User guide
The TPS65185EVM is a fully assembled platform for evaluating the performance of the TPS65186 EINK display driver.
  • Designed to work with EINK based display
  • Vin: 3V to 6V
  • +/-15V LDO Source Drivers
  • -20V/+22V Gate Drivers
  • 0 to -5V VCOM driver
  • Temperature sensing

CAD/CAE symbols

Package Pins Download
VQFN (RGZ) 48 View options
VQFN (RSL) 48 View options

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