SSC2005SC

Critical Conduction Mode PFC Control IC SSC2005SC General Description SSC2005SC is a Critical Conduction Mode (CRM) control IC for power factor correction (PFC). Since no input voltage sensing and no auxiliary winding for inductor current detection are required, the IC allows the realization of low standby power and the low number of external components. The product achieves high cost-performance and high efficiency PFC converter system. Features and Benefits  Inductor Current Detection (No auxiliary winding required)  Low Standby Power (No input voltage sensing required)  Minimum Off-time Limitation Function to restrict the Rise of Operation Frequency  High Accuracy Overcurrent detection: −0.60 V ± 5 %  Protections Overcurrent Protection (OCP): Pulse-by-pulse Overvoltage Protection (OVP): Auto restart FB Pin Undervoltage Protection (FB_UVP): Auto restart Thermal Shutdown Protection with hysteresis (TSD): Auto restart Typical Application Circuit VAC BR1 DBYP L1 D1 D2 R2 C1 Q1 C2 R1 R3 RCS VOUT LINE GND R4 DZCS C5 Cｆ External power supply U1 CS 5 GND 6 OUT 7 NC RDLY 4 RT 3 COMP 2 8 VCC FB 1 SSC2005SC C6 RVS1 RVS2 C4 C3 RRT RS CP CS RDLY TC_SSC2005SC_1_R2 Package SOIC8 Not to scale FB 1 COMP 2 RT 3 RDLY 4 8 VCC 7 OUT 6 GND 5 CS Electrical Characteristics  VCC Pin Absolute Maximum Ratings, VCC = 28 V  OUT Pin Source Current, IOUT(SRC) = −500 mA  OUT Pin Sink Current, IOUT(SNK) = 1000 mA Applications PFC circuit up to 200 W of output power s...