TPS65185 PMIC for E-Ink® Vizplex™ Enabled Electronic Paper Display w/ Active Discharge |

This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
PMIC for E-Ink® Vizplex™ Enabled Electronic Paper Display w/ Active Discharge


Recommended alternative parts

  • TPS65186  -  This device doesn't have active discharge. Only available in the 7x7 package


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.


  • 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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Part number Order Regulated outputs (#) Processor supplier Vin (Min) (V) Vin (Max) (V) LDO Step-down DC/DC converter Iout (Max) (A) Iq (Typ) (mA) Features Rating Operating temperature range (C) Configurability Package size: mm2:W x L (PKG) Package Group
TPS65185 Order now 4     E-ink     3     5.9     2       0     5.5       Catalog     -10 to 85
-40 to 85    
Factory programmable     48VQFN: 36 mm2: 6 x 6 (VQFN | 48)
48VQFN: 49 mm2: 7 x 7 (VQFN | 48)    
VQFN | 48
VQFN | 48    
TPS65186 Order now 4       3     6     2     2     0     5.5     Enable Pin     Catalog     -40 to 85       48VQFN: 49 mm2: 7 x 7 (VQFN | 48)     VQFN | 48