OB2201/T

Quasi Resonant PWM Controller

OB2201 is a QR PWM Controller dedicated for 20W~65W power range offline applications. Reduced switching loss and improved EMI performance are achieved through QR control. The optimized loading/ frequency adaptive design will benefit average efficiency and help to meet EPS2.0 requirement. 


Features: 

◆ Up to 90% full load efficiency 
◆ Programmable soft start
◆ High precision output OVP
◆ IC VDD OVP
◆ Multi-mode QR control
◆ Optimized over power protection (OPP) 
◆ Upper frequency clamp at 90KHz
◆ QR mode 52kHz lower frequency clamping
◆ 600mA gate drive capability 
◆ Built-in over temperature protection
◆ Selectable built-in Latch shutdown for strong system reliability
◆ Available in DIP8 and SOP8 packages,RoHS compliant



Applications: 

◆ EPC Adapter
◆ DLP Projector/RPD Power
◆ DVD/STB Player Power
◆ Home Appliance Power

Typical Application: