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DK125

Features

 Full voltage input 90V to 265V
 Built-in 700V high voltage power tube
 Integrated high voltage constant current starting circuit, no external starting resistance
 Burst-mode (22kHz intermittent mode)
 Standby power consumption less than 0.3W
 65KHz PWM switching frequency
 patented self-powered technology, no external auxiliary winding power supply
 4KV ESD test

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Product details

Product overview

DK125 is a sub-side feedback type AC-DC switching power supply control chip. The chip adopts highly integrated CMOS circuit design, with output short circuit, secondary open circuit, over temperature, over voltage and other protection functions. The chip has built-in high-voltage power tube and self-powered line, with few peripheral components, simple transformer design (the transformer that isolates the output circuit only needs two windings) and other characteristics.

Features

 Full voltage input 90V to 265V

 Built-in 700V high voltage power tube

 Integrated high voltage constant current starting circuit, no external starting resistance

 Burst-mode (22kHz intermittent mode)

 Standby power consumption less than 0.3W

 65KHz PWM switching frequency

 patented self-powered technology, no external auxiliary winding power supply

 4KV ESD test

 Built-in buffeting function, automatically reduce the working frequency when standby, to meet the European green energy standard (< 0.3W), while reducing the output voltage ripple

 Built-in slope compensation circuit to ensure the circuit stability at low voltage and high power output

 Frequency jitter reduces EMI filtering costs

 Over temperature, over current, over voltage and output short circuit, secondary open circuit protection

Application

 Power adapter

 LED power supply

 induction cooker

 Air conditioners, DVDS, set-top boxes and other home appliances

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