The NCP13994 is a high-performance current-mode controller for half-bridge resonant converters in offline power supplies.
The controller incorporates a 700 V-rated start-up current source and X2 capacitor discharge function as well as gate drivers for external MOSFETs. This simplifies the layout of power-supply circuits, and reduces the application component count.
The NCP13994 provides a dedicated output to interface with an external power factor correction (PFC) controller, a convenient feature for applications in which a PFC front end is needed. A quiet skip-mode technique also ensures excellent no-load and light-load efficiency.
The NCP13994 provides a suite of protection features that enable safe operation. These include:
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