| CPC H02M 1/4233 (2013.01) [H02M 1/0009 (2021.05); H02M 1/08 (2013.01)] | 18 Claims |
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1. A drive controller comprising:
a sampling circuit; and
a drive circuit, wherein the drive controller is applicable to a control system further comprising a power factor correction (PFC) circuit that comprises
a first bridge arm,
a second bridge arm,
a first switching transistor, and
a second switching transistor, the first bridge arm and the second bridge arm are connected in parallel and connected to a load, a first bridge arm midpoint of the first bridge arm is connected to a power supply and a drain electrode of the first switching transistor, a drain electrode of the second switching transistor is connected to a second bridge arm midpoint of the second bridge arm, a source electrode of the first switching transistor is connected to a source electrode of the second switching transistor and the sampling circuit, a gate electrode of the first switching transistor and a gate electrode of the second switching transistor are connected in parallel to the drive circuit, and the sampling circuit is connected to the drive circuit; the sampling circuit is configured to obtain a target current value between the first switching transistor and the second switching transistor; and the drive circuit is configured to turn off gate inputs of the first switching transistor and the second switching transistor when the target current value is greater than a current threshold.
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