| 摘要 |
The invention concerns control of a switched-mode power supply. A switched-mode power supply according to the invention comprises a secondary switch that enables a secondary side of the switched-mode power supply to charge magnetic energy into a transformer of the switched-mode power supply. The switched-mode power supply comprises also a control circuitry that controls the operation of the secondary switch. Due to the fact that the secondary side is able to return energy to a primary side of the switched-mode power supply the control of the switched-mode power supply can be fast. Furthermore, a need for an isolator circuit, e.g. an optical isolator, is avoided.
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