Power switching converter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 14, 2017
Grant Date -
Oct 22, 2015
app pub date -
Jun 30, 2015
filing date -
Mar 31, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A circuit includes a transformer with a primary, secondary, and auxiliary. A first control circuit actuates a first switch circuit based on a wake-up signal to cause the primary to transmit power to the secondary. A second control circuit actuates a second switch circuit based on an output voltage at the secondary being less than a threshold to generate the wake-up signal to the secondary for transmission to the auxiliary. The second switch circuit has a transistor with a source coupled to a reference node, a gate coupled to the second control circuit. A first diode has an anode coupled to the source and a cathode coupled to the drain, and blocks flow of current from the drain to the source. A second diode has an anode coupled to the substrate and a cathode coupled to the drain, and blocks flow of current from the drain to the substrate.
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