| 摘要 |
A power conversion circuit has a port for connection to a power source; a transformer having a primary winding, a secondary winding, and an effective secondary leakage inductance L2e; and a capacitance C connected on a secondary side of the transformer. A first switching device is connected to be opened and closed to transfer energy from the power source via the effective leakage inductance to charge the capacitance during energy transfer cycles having a characteristic time scale of pi*sqrt(L2e*C). Control circuitry controls precharging of the capacitance at selected times other than during the forward energy transfer cycle.
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