NCP1603

NCP1603 PFC/PWM Combo Controller with Integrated High Voltage Startup and Standby Capability The NCP1603 is a Power Factor Correction (PFC) and Pulse Width Modulation (PWM) combo controller. It offers extremely low no−load standby power consumption that is suitable for the low−power consumer markets. The key features of the device are listed below. Features This is a Pb−Free Device* PFC Features Near−Unity Power Factor in Discontinuous and Critical Mode (DCM and CRM) Voltage−Mode Operation Low Startup and Shutdown Current Consumption Programmable Switching Frequency for DCM Synchronization Capability Overvoltage Protection (107% of Nominal Output Level) Undervoltage Protection or Shutdown (8% of Nominal Output Level) Programmable Overcurrent Protection Thermal Shutdown with Hysteresis (95/140°C) Undervoltage Lockout with Hysteresis (9.0/10.5 V) PWM Features Integrated Lossless High Voltage Startup Current Source 100 kHz PWM Current−Mode Operation with Skipping Cycle Capability During Standby Condition PFC Bias Voltage is Disabled in Standby Condition to Achieve Extremely Low No−Load Standby Power Consumption Fault Protection Implemented by a Timer and Independent of Badly Coupled Auxiliary Transformer Winding Primary Overcurrent Protection and Latched Overvoltage Protection Internal 2.5 ms Soft−Start "6.4% Frequency Jittering for Improved EMI Performance Latched Thermal Shutdown with Hysteresis (140/165°C) Undervoltage Lockout with Hys...