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Using resonant power supply control IC with PFC

Posted: 24 Jul 2013 ?? ?Print Version ?Bookmark and Share

Keywords:discrete MOSFET? half-bridge? controller? LLC resonant converter? SSL4120?

The SSL4120 integrates a controller for Power Factor Correction (PFC) and a controller for a half-bridge resonant converter (HBC).

It provides the drive function for the discrete MOSFET for the up-converter and for the two discrete power MOSFETs in a resonant half-bridge configuration.

The resonant controller part is a high-voltage controller for a zero voltage switching LLC resonant converter. The resonant controller includes a high-voltage level shift circuit and several protection features such as over-current protection, open-loop protection, capacitive mode protection and a general-purpose latched protection input.

In addition to the resonant controller, the SSL4120 also contains a Power Factor Correction (PFC) controller. The efficient PFC operation is achieved using quasi-resonant operation at high-power levels and quasi-resonant operation with valley skipping at lower power levels. Overcurrent protection, over-voltage protection and demagnetisation sensing, ensures safe operation in all conditions.

View the PDF document for more information.

Originally published by NXP Semiconductors at as "SSL4120 resonant power supply control IC with PFC".

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