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- W2383552021 abstract "Designed was a synchronous rectification PWM type boost DC-DC converter,which can be used as a white LED backlight constant current driver in mobile phone.The chip operates with 1 MHz fixed high switching frequency,allowing small external components to be used.The driver integrates serial input digital interface and a 5 bit Digital-Analog-Converter(DAC),and the digital brightness control is implemented by adjusting the feedback regulation voltage in digital steps.Based on UMC 0.6 μm BCD process,Hspice simulation results show that the chip can be powered to drive up to 5 white LEDs at the input voltage range of 2.7~6 V;the efficiency is above 80% when the LED current ranges from 10 mA to 40 mA;and 32-levels digital brightness regulation can be operated properly." @default.
- W2383552021 created "2016-06-24" @default.
- W2383552021 creator A5021699280 @default.
- W2383552021 date "2008-01-01" @default.
- W2383552021 modified "2023-09-23" @default.
- W2383552021 title "Design of PWM Boost LED Driver with Digital Brightness Control" @default.
- W2383552021 hasPublicationYear "2008" @default.
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