KP3221DP is a low-cost, high-performance offline PWM-controlled power switch IC designed for compact AC-DC power supply applications.
The device integrates a 650V high-voltage MOSFET, high-voltage startup circuit, and PWM control circuitry, reducing external components and simplifying power supply design. It uses multi-mode PWM control technology to improve efficiency, standby power performance, and system stability.
KP3221DP supports Buck and Buck-Boost topologies and provides multiple protection functions including overload protection, cycle-by-cycle current limiting, output over-voltage protection, VDD protection, and thermal protection.
It is suitable for small appliance power supplies, industrial control systems, and low-power offline AC-DC converter applications.
