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onsemi NCP106x & NCP107x High-Voltage Switchers

onsemi NCP106x & NCP107x High-Voltage Switchers have a built-in 700V MOSFET and integrated fixed-frequency current-mode controller. The switchers have a high level of integration, including soft-start, frequency-jittering, and short-circuit protection. The onsemi NCP106x & NCP107x switchers have a skip-cycle operation at low peak currents, fixed ramp compensation, and adjustable peak current. A Dynamic Self-Supply (DSS) eliminates the need for auxiliary winding. NCP106x & NCP107x are available in PDIP-7, SOIC-10, or SOIC-16 packages.

Features

  • Built-In 700V MOSFET with RDS(on) of 34W (NCP1060) and 11.4W (NCP1063)
  • Built-In 700V MOSFET with RDS(on) of 4.7W (NCP1076/77)/11W (NCP1072/75)/22W (NCP1070/71)
  • Large creepage distance between high-voltage pins
  • Current-mode fixed frequency operation - 60kHz or 100kHz (130kHz on demand)
  • Adjustable peak current
  • Fixed ramp compensation
  • Direct feedback connection for non-isolated converter
  • Internal and adjustable Over Power Protection (OPP) circuit
  • Skip-cycle operation at low peak currents only
  • Dynamic self-supply: no need for an auxiliary winding
  • Internal 1ms or 4ms soft-start
  • Auto-recovery output short circuit protection with timer-based detection
  • Auto-recovery overvoltage protection with auxiliary winding operation
  • Frequency jittering for better EMI signature, including frequency foldback mode
  • No load input consumption < 50mW
  • Frequency foldback to improve efficiency at light load
  • Internal temperature shutdown
  • These are Pb-free devices

Applications

  • Auxiliary, standby isolated and non-isolated power supplies, white goods, smart meter, E-meter
  • Power meter SMPS
  • Wide VIN low power industrial SMPS
Publicerad: 2015-06-03 | Uppdaterad: 2022-03-11