電源管理ic-九游会登陆

fp9931

integrated multi-channel dc-dc converters for epd

applications

電子書
產品說明



the fp9931 offers a compact power supply solution to provide all voltages required by epd panel. the fp9931 includes 2 high performance dc-dc converters, one is for positive voltage and the other is for negative voltage used by epd drivers, a vcom buffer (unity-gain opa), a positive charge pump and a negative charge pump to provide adjustable regulated output voltages.
the converters provide the regulated positive and negative supply voltage for the panel source driver ics.
the positive charge pump controller provides regulated epd gate-on voltage. the negative charge pump controller provides regulated epd gate-off voltage.
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. for automatic vcom adjustment in production line, vcom can be set from 0v to -5v with 8 bit control through the serial interface.
the fp9931 provides precise temperature measurement function to monitor the panel temperature during operation.

特性
  • 2.9v to 5.5v input supply voltage
  • 7.04v ~ 15.06v adjustable output for vpos
    *maximum output current 320ma
    *current limit 350ma
    *output under voltage and short circuit protection
  • -7.04v ~ -15.06v adjustable output for vneg
    *maximum output current 320ma
    *current limit 350ma
    *output under voltage and short circuit protection
  • 0v ~ -5v adjustable vcom output voltage with 8-bits dac
  • vgh charge pump output from 15v to 30v with external dividual resistor
  • vgl charge pump output from -15v to -25v with external dividual resistor
  • adjustable soft-start time from 3ms to 6ms
  • power good signal
  • over temperature protection
  • tqfn-40l (5mmx5mm) package
  • rohs compliant
  • thermistor monitoring
    *-10°c to 85°c temperature range
    *±1°c accuracy from 0°c to 45°c (ic=25°c)
    *enable/disable by en_ts
封裝和引腳定義
訂購信息
part name package request
fp9931wd tqfn-40l (5mmx5mm)

sample request

technical support

技術文檔
title file release date
fp9931-power supplier solution with i2c interface for epd panels 2023/01/16
网站地图