Power conversion apparatus for decreasing number of pins
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United States of America Patent
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May 23, 2017
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N/A
app pub date -
Jun 3, 2016
filing date -
May 17, 2016
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Abstract
A power conversion apparatus including a power conversion circuit, a light-emitting unit and a control chip is provided. The control chip has a multi-function pin and a feedback pin, where the multi-function pin and the feedback pin respectively receive a dimming signal and a feedback signal reflecting an output current of the light-emitting unit, and the control chip determines whether to generate a PWM signal to a power switch of the power conversion circuit according to the dimming signal and the feedback signal based on a duty ratio of the dimming signal.
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