CPC H02M 1/0048 (2021.05) [H02M 1/0009 (2021.05); H02M 1/08 (2013.01); H02M 3/155 (2013.01)] | 20 Claims |
1. A switched-mode power supply, comprising:
a primary inductor to carry a first varying current in response to a controlled switching device;
a secondary inductor electromagnetically coupled with the primary inductor to carry a second varying current that is substantially less than the first varying current and to produce a first varying voltage that is substantially proportional to the first varying current;
a current sense element to produce a second varying voltage that is proportional to a low frequency varying current being supplied to a load of the switched-mode power supply; and,
control circuitry to receive the second varying voltage and the first varying voltage and to, based on the second varying voltage and the first varying voltage, control the controlled switching device.
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