BM1C001F

Datasheet AC/DC Drivers Power Factor Correction and Quasi-Resonant DC/DC converter IC BM1C001F General Description The compounded LSI of the Power Factor Correction (PFC) converter and Quasi-Resonant (QR) controller type AC/DC converter IC provides an optimum system for all products that include an electrical outlet. BM1C001F has a built in HV starter circuit that tolerates 650V and contributes to low power consumption and high speed start. The PFC part is a Boundary Conduction Mode (BCM). It reduces the switching loss and the switching noise. This IC has adopted the voltage control mode, a solution that achieves no auxiliary winding and reduces external parts and the bias current. The DC/DC part is Quasi-Resonant controlled. This control enables soft switching and helps to keep the EMI low. With MOSFET for switching and current detection resistors as external devices, a higher degree of design freedom is achieved. This IC has over voltage protection for the PFC’s output terminal, which protects electrolytic capacitors by stopping switching and makes the standby power consumption low by the PFC ON/OFF control function. The IC includes various protective functions such as VCC over voltage protection, external latch protection, brown out protection, soft start function, per-cycle current limiter and over load protection. „ PFC Output level setting function „ PFC ON/OFF level setting „ QR low power when load is light (Burst operation) and frequency decrease function „ QR maximu...