Infineon Technologies Austria Ag

Infineon Technologies Ag

Ming Ping Mao

Weifu Yu

Tong Bao

Yaw Hann Thian

Yong Siang Teo

Siu Kam Eric Kok

In some embodiments, upon detecting a fault condition, switching in a switched mode power supply is disabled only after a current switching cycle of the switched mode power supply is completed.

Switched mode power supply controller

In an example, a controller device for a resonant converter includes processing circuitry configured to output a first switching signal and a second switching signal. A switching module is configured to electrically couple a primary side winding of a transformer to a voltage source during an activated state of the first switching signal and to electrically couple the primary side winding to a reference node during an activated state of the second switching signal. The processing circuitry is further configured to determine a first synchronous rectification signal and a second synchronous rectification signal. A synchronous rectification module is configured to generate a first channel for a first secondary side winding of the transformer during an activated state of the first synchronous rectification signal and to generate a second channel for a second secondary side winding of the transformer during an activated state of the second synchronous rectification signal.

Controller device with adaptive synchronous rectification

In one embodiment, a method of operating a switched-mode power supply that has a switch coupled to a drive signal is disclosed. The method includes deactivating the drive signal at a first instance of time, and comparing a power supply signal to a threshold after deactivating the drive signal. The method further includes activating the drive signal a variable period of time after the power supply signal crosses the threshold.

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Singapore, Singapore

Ming Ping Mao