SANKEN SSC2001S

The SSC2001S is a continuous conduction mode (CCM) control IC for power factor correction (PFC). The IC allows the realization of high-power output and high-efficiency power management systems, which require few external components because of the built-in average current control system.

• Continuous conduction mode (CCM) system: low peak current and suitability for high power applications
• Average current control system: no multiplier and few external components allows simple circuit configuration because no input voltage detection required
• PWM and frequency modulation functions: PWM operation frequency fixed at 65 kHz (typ) with superimposed variable frequency according to duty cycle
• Maximum duty cycle 94% (typ)
• Error amplifier reference voltage 3.5 V (typ)
• Built-in high speed load response (HSR) function
• Brown-in/brown-out protection function: protects the power supply at low input voltages
• Protection functions:
  • Output overvoltage protection (OVP): turns off gate output on pulse-by-pulse basis, with auto restart
  • Overcurrent protection (OCP): two types, both with auto restart:
    • V_IS(OCPL): limits power by reducing duty cycle of next cycle after detection
    • V_IS(OCPH): turns off gate output on pulse-by-pulse basis
  • Open loop detection (OLD) on output: stops oscillation, and the operation switches to standby mode; auto restart after removal of cause of open loop

• Power factor correction of middle to high power for electronic devices such as:
  • AC/DC power supplies
  • Digital appliances for large size LCD/PDP television and so forth
  • Office automation (OA) equipment for computer, server, monitor, and so forth
  • Communication facilities