Power supplies and control methods suitable for sequentially transmitting command bits from secondary side to primary side
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United States of America Patent
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Sep 26, 2017
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N/A
app pub date -
Jun 6, 2016
filing date -
Jun 11, 2015
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Abstract
A control circuit suitable for a power supply. The power supply has a transformer with a primary winding and a secondary winding magnetically coupled to each other. The transformer is configured to transfer electric energy from a primary side to a secondary side and to build an output power source in the secondary side. The control circuit has a primary-side controller and a secondary-side controller. The primary-side controller is in the primary side, configured to control a current through the primary winding. In the secondary side, the secondary-side controller is powered by the output power source and configured to provide a command code with several command bits sequentially transmitted to the primary-side controller, so as to set an operation mode that the primary-side controller operates in.
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