Power chip

The NCP1219 is a pin-pin compatible new generation of the successful 7-pin current mode NCP12XX series. The controller achieves excellent standby power consumption by using an adjustable skip mode and an integrated high-voltage start-up FET. Internal frequency dithering, slope compensation, timer-based fault detection and latching inputs make this controller an excellent choice for converters where ruggedness and part cost are key constraints. Dynamic Self-Power Supply (DSS) greatly simplifies the transformer design and eliminates the need for an auxiliary winding to power the NCP1219. This feature is especially useful for applications where the output voltage varies during operation (such as battery chargers). Due to its high voltage technology, the IC is directly connected to the high voltage DC rail.