Infineon Technologies Ag

Vlad Alexandru Mircea Ionescu

Cristian Garbossa

Silvia Solda

Luca Scandola

Andrea Zuccollo

Ozan Serpedin

Michele Bergo

Alberto Arpino

Dario Cappuzzo

Paola Lops

Bogdan Dimitriu

In some examples, a device includes a selector circuit configured to deliver power to a first driver circuit, where the first driver circuit is configured to activate and deactivate a first switch of a postregulator. The device also includes a startup regulator and a controller configured to cause the selector circuit to deliver power from the startup regulator to the first driver circuit. The controller is also configured to determine that a boost regulator is operational after delivering power from the startup regulator to the first driver circuit. The controller is further configured to cause the selector circuit to deliver power from the boost regulator to the first driver circuit in response to determining that the boost regulator is operational.

Power delivery to a driver circuit in a postregulator

This disclosure describes a protection circuit configured to protect a power converter. The protection circuit may be configured to determine when the power converter is operating in a tristate mode, and upon determining that the power converter is operating in the tristate mode, to disable a supply to the power converter based on a comparison of a switch node voltage on a switch node of the power converter to a feedback node voltage on an output node of the power converter.

Safety cutoff circuit for power converter

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Bucharest, Romania

Vlad Alexandru Mircea Ionescu