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- W2072581663 abstract "This paper presents a floating-buck dimmable LED driver for solid-state lighting applications. In the proposed driver, an adaptive timing difference compensation (ATDC) is developed to adaptively adjust the off-time of the low-side power switch to enable the driver to achieve high accuracy of the average LED current over a wide range of input voltages and number of output LED loads, fast settling time, and high operation frequency. The power efficiency benefits from the capabilities of using synchronous rectifier and having no sensing resistor in the power stage. The synchronous rectification under high input supply voltage is enabled by a proposed high-speed and low-power gate driver with pseudo-digital level shifters. Implemented in a 0.35 μm 50 V CMOS process, experimental results show that the proposed LED driver can operate at 1 MHz and achieve peak power efficiency of 93% to support a wide range of series-connected output LEDs from 1 to 10 and a wide input range from 10 to 40 V. The proposed LED driver has only 2.8% current error from the average LED current of 345 mA and settles within 8.5 μs after triggering the dimming condition, improving the settling time by 14 times compared with the state-of-the-art LED drivers." @default.
- W2072581663 created "2016-06-24" @default.
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- W2072581663 date "2014-08-01" @default.
- W2072581663 modified "2023-10-03" @default.
- W2072581663 title "A 40 V 10 W 93%-Efficiency Current-Accuracy-Enhanced Dimmable LED Driver With Adaptive Timing Difference Compensation for Solid-State Lighting Applications" @default.
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- W2072581663 doi "https://doi.org/10.1109/jssc.2014.2320951" @default.
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