Power Management IC

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Quasi Resonant CoolSET™ Power ICs are optimized for off-line switch power supplies in cascode configurations. The ICs are housed in single packages with two separate chips; one is a controller chip and the other is an HV MOSFET chip. The ICs can achieve lower EMI and higher efficiency with improved digital frequency reduction through the proprietary novel Quasi Resonant operation. The enhanced Active Burst Mode enables flexibility in standby power range selection. The product has a wide operation range (10 ~ 25.5V) of IC power supply and lower power consumption.


  • Integrated power IC
  • 650V /800V avalanche rugged CoolMOS™
  • 650V /800V startup cell
  • Digital frequency reduction with decreasing load
  • Cycle-by-cycle current limitation with fold-back correction
  • Built-in digital soft-start
  • Active Burst Mode for lowest standby power <50mW
  • Latch-off mode for short-winding and output voltage
  • Enhanced integrated protection functions
  • Modulated gate drive


  • Auxiliary power supply for Home Appliances/white Goods, TV, PC & Server
  • Blu-ray player, Set-top box & LCD/LED Monitor