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

DK124 is a sub – edge feedback type AC-DC switching power control chip. The chip adopts highly integrated CMOS circuit design, with output short circuit, secondary open circuit, over temperature, over voltage protection functions. The chip has built-in high-voltage power tube and self-power supply line, with few peripheral components, simple transformer design (the transformer isolating the output circuit only needs two windings) and other characteristics

DK112 is a secondary feedback flyback AC-DC off-line switching power control chip. The chip uses highly integrated CMOS power Circuit design, with output short circuit, secondary open circuit, over temperature, over voltage protection functions. High voltage power tube and self-power supply line are built into the chip. There are few peripheral components, the transformer design is simple (isolated output circuit transformer only needs two windings) and other characteristics

DK225MP is a high-performance, low-power PWM control chip with a built-in 650V high-voltage MOSFET, suitable for power supply schemes up to 22W. In PWM mode, the chip switches at a fixed frequency, which is set internally by the chip. In no-load or light load, the chip works in green mode, so as to reduce switching loss and improve the working efficiency of the whole machine. The jump frequency of DK225MP is set at 25KHz, which can effectively avoid audio noise when working. The integrated totem pole driving structure in the chip can effectively improve the EMI characteristics of the system and soft start control of the switch