| 摘要 |
A power supply includes a series resonant converter (100), having at least one switch and at least one capacitor. The converter (100) includes a switching circuit (120) including an enable input. A voltage sensing circuit (124) that determines the earliest safe switching time of the switch is provided. The safe switching time is the time that will prevent a peak voltage on the capacitor from exceeding a predetermined threshold for a next cycle of the converter. The voltage sensing circuit (124) provides an enable signal to the enable input when the earliest switching time has passed, to enable the switching circuit (120). A pair of output terminals connected to the series resonant converter (100) receives the output. The power supply is particularly intended to provide a welding power supply. <IMAGE> |
