Isolated power supply circuit with programmable function and control method thereof
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United States of America Patent
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Apr 18, 2017
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N/A
app pub date -
Apr 1, 2015
filing date -
Apr 4, 2014
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Abstract
The present invention provides an isolated power supply circuit with a programmable function and a control method thereof. The isolated power supply circuit includes: a transformer circuit, a power switch circuit, a control circuit, and a discharge circuit. The control circuit generates an operation signal and a bleeding signal according to a setting signal. The discharge circuit is coupled to an output node, for generating a discharging current. When the programmable output voltage at the output node switches between different predetermined levels, in a transition period, the bleeding signal adjusts the discharging current to discharge the output node, such that the transition period is shortened.
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