onsemi DC DC Switching Controllers NCP1230AP100G

The NCP1230AP100G is a low-standby power soft skip mode controller designed for medium-to-high power switched-mode power supplies, suitable for applications such as notebook adapters and offline battery chargers. It operates in current mode with internal ramp compensation and features a high-voltage startup circuit that minimizes external component requirements. The controller includes an event management scheme that disables the front-end PFC circuit during standby to reduce no-load power consumption. Key features include soft skip mode at low peak currents to limit acoustic noise, an internal latching function for overvoltage protection, and true overload protection. It also offers a 2.5 ms soft-start, internal leading edge blanking, and frequency dithering to improve EMI performance. The device can drive large MOSFETs with a peak current capability of 500 mA to 800 mA and is available in multiple frequency options of 65 kHz, 100 kHz, and 133 kHz. The NCP1230AP100G is housed in a PDIP-7 package and is Pb-free, making it suitable for environmentally conscious designs.