The TPS65182/TPS65182B device is a single-chip power supplies designed to for E Ink® Vizplex™ displays used in portable e-reader applications and support panel sizes up to 9.7 inches. Two high efficiency DC/DC boost converters generate ±17-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 and can be adjusted either by an external resistor or the I2C interface. The VCOM driver can source or sink current depending on panel condition.

The TPS65182/TPS65182B provides precise temperature measurement function to monitor the panel temperature during operation. The temperature reading is updated every 60 s and can be accessed through the I2C interface.

• 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
• 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
  • –0.3 V to –2.5 V
  • Adjustable Through External Potentiometer
  • 15-mA Max Integrated Switch
• Thermistor Monitoring
  • –10°C to 85°C Temperature Range
  • ±1°C Accuracy from 0°C to 50°C
• I2C Serial Interface
  • Slave Address 0x48h (1001000)
• Flexible Power-Up Sequencing
• Sleep Mode Support
• Thermally Enhanced Package for Efficient Heat Management (48-Pin 7 mm × 7 mm × 0.9 mm QFN)
• APPLICATIONS
  • Power Supply for Active Matrix E Ink® Vizplex™ Panels
  • E-Book Readers
  • EPSON® S1D13522 (ISIS) Timing Controller
  • EPSON® S1D13521 (Broadsheet) Timing Controller
  • Application Processors With Integrated or Software Timing Controller (OMAP™)

OMAP is a trademark of Texas Instruments. Vizplex is a trademark of E Ink Corporation. E Ink is a registered trademark of E Ink Corporation. EPSON is a registered trademark of Seiko Epson Corporation.