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DK125 - Offline switching power supply controller

Datasheet Summary

Description

The DK125 is a secondary side fly-back type AC-DC Switch Mode Power Controlling IC.

Designed with high integration CMOS circuit, it has protection functions for short circuit, secondary side open circuit, over temperature, over voltage and so on.

Features

  • 90V.
  • 265V wide range AC power input.
  • Built-in 700V HV BJT.
  • Internal integrated high voltage starting circuit, no need for additional resistance.
  • Burst mode (22kHz Intermittent operation mode).
  • Standby power consumption < 0.3W.
  • 65KHz PWM switching frequency.
  • 4KV ESD.
  • Internal power compensation circuit to keep the stability of output in different input situation.
  • Patented self-power supply design, no need for auxiliary winding in transformer.
  • Inter.

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Datasheet preview – DK125

Datasheet Details

Part number DK125
Manufacturer DongKe Semicondutor
File Size 528.84 KB
Description Offline switching power supply controller
Datasheet download datasheet DK125 Datasheet
Additional preview pages of the DK125 datasheet.

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Full PDF Text Transcription

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ANHUI DONGKE SEMICONDUCTOR CO., LTD OFF-LINE SWITCH MODE POWER CONTROLLER -DK125 SPECIFICATION 1. DESCRIPTION The DK125 is a secondary side fly-back type AC-DC Switch Mode Power Controlling IC. Designed with high integration CMOS circuit, it has protection functions for short circuit, secondary side open circuit, over temperature, over voltage and so on. With built-in HV power transistor and patented Self-Power supply circuit, it has the characteristics of saving external components, simple transformer design with only two windings in isolated output circuit, etc. 2. APPLICATIONS ·Battery charger ·Power AC/DC adapters ·STB power supply ·Electromagnetic oven power supply ·DVD/VCD/VCR power supply ·Air conditioner power supply ·LED driver applications ·TV/Monitor power supply 3.
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