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APW7223

ANPEC
Part Number APW7223
Manufacturer ANPEC
Description Multi-Output Power Supply
Published Aug 15, 2020
Detailed Description APW7223 Multi-Output Power Supply with VCOM Amplifier for EPD Features General Description • Single Chip Power Manag...
Datasheet PDF File APW7223 PDF File

APW7223
APW7223

Overview
APW7223 Multi-Output Power Supply with VCOM Amplifier for EPD Features General Description • Single Chip Power Management Solution for E- The APW7223 is a single chip, multi outputs PMIC for E- paper Displays paper displays.
Two PWM converters respectively gener- • Input Supply Voltage Range: 3.
0~5.
5V ate positive and negative voltages which are boosted to • I2C Series Interface higher voltage by two charge pumps for both source and • Boost Converter for Positive Rail Base (HVINP) gate drivers.
Two integrated power switches are used to • Inverting Buck-Boost Converter for Negative Rail disconnect these PWM outputs from load in shutdown Base (HVINN) mode.
All PWM and charge pump output voltages are • Accurate Voltage Tracking between HVINP and adjustable by external resistors and their power on/off HVINN: +50mV timings can be individually programmable via I2C interface.
• Integrated Two Power Switches with Soft-start One accurate VCOM voltage, for backplane biasing, is Control for Source Driver Supply adjustable via I2C interface from -0.
3V to -2.
85V with 10mV -POS: +15V/120mA per step.
The VCOM is capable of sourcing and sinking -NEG: -15V/120mA • Two Charge Pump for Gate Driver Supply current, depending on panel condition, at lease 100mA.
An external negative temperature coefficient(NTC) resis- -DGVDD: +22V/20mA tor is incorporated to sense remote temperature.
This -DGVEE:-22V/20mA remote temperature sensing can be used to monitor the • Accurate and Adjustable VCOM Voltage for Panel battery’s surface temperature to avoid over heating.
The Backplane Biasing temperature data is mapped from the voltage on TS pin - -0.
3 to -2.
85V/100mA, 10mV per step according to a preset conversion table.
Approximately -8-bit Control every 250µs the APW7223 executes the voltage/tempera- • Programmable Turn-on/Turn-off Timing in every ture conversion and stores the temperature date in reg- Output Voltage ister in two’s complement format.
• Remote...


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