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NCP1028 - High-Voltage Switcher

General Description

Pin No.

Ramp Comp.

Out Brown Out and Latchoff Input 4 FB Feedback Signal Input 5 Drain Drain Connection 7 OPP Over Power Protection 8 GND The IC Grou

Key Features

  • Built.
  • in 700 V MOSFET with Typical RDS(on) of 5.8 W, TJ = 25°C.
  • Current.
  • Mode Fixed Frequency Operation: 65 kHz and 100 kHz.
  • Fixed Peak Current of 800 mA.
  • Skip.
  • Cycle Operation at Low Peak Currents.
  • Internal Current Source for Clean and Lossless Startup Sequence.
  • Auto.
  • Recovery Output Short Circuit Protection with Timer.
  • Based Detection.
  • Programmable Brown.
  • Out Input for Low Input Voltage D.

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Datasheet Details

Part number NCP1028
Manufacturer onsemi
File Size 485.45 KB
Description High-Voltage Switcher
Datasheet download datasheet NCP1028 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NCP1028 High-Voltage Switcher for Medium Power Offline SMPS Featuring Low Standby Power The NCP1028 offers a new solution targeting output power levels from a few watts up to 15 W in a universal mains flyback application. Our proprietary high−voltage technology lets us include a power MOSFET together with a startup current source, all directly connected to the bulk capacitor. To prevent lethal runaway in low input voltage conditions, an adjustable brown−out circuitry blocks the activity until sufficient input level is reached. Current−mode operation together with an adjustable ramp compensation offers superior performance in universal mains applications.