| 摘要 |
The peak time of the exciting current of a transformer or the variation time of the primary current or the primary voltage corresponding to the peak time is detected. After the peak time occurs and a predetermined period of time from the peak time elapses, a switch is turned on/off. A controller (1) is adapted to a power converter circuit having a transformer and a switch circuit composed of one or more switches. The controller (1) comprises an output voltage detecting unit (11) for detecting the output voltage of the power converter circuit, an exciting current peak time detecting unit for detecting the peak time of the exciting current of the transformer, and a timing generating unit for generating the timings at which the switches are turned on/off according to the output voltage and the peak time.
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