DK912
DK912 is High Precision CC/CV Primary-Side Converter manufactured by Dongke Semiconductor.
DESCRIPTION
The DK912 is a primary side flyback type AC-DC Switch Mode Power Controlling IC. It integrates 700V high voltage power transistor and primary side peak current detecting circuit. It also includes Primary Side Constant Current Regulation, Constant Voltage Control, Self-Power supply circuit and Output cable pensation functions. Because of its highly integrated CMOS circuit design, lots of external ponents are saved, transformer design is simple, only two windings are needed in transformer for isolated circuit designs.
2. APPLICATIONS
- Battery charger
- Power AC/DC adapters
- STB power supply
- Electromagnetic oven power supply
- DVD/VCD power supply
- Air conditioner power supply
- AC/DC LED driver applications
- TV/Monitor power supply
3. MAIN FEATURES
- Build-in 700V high voltage power transistor.
- 85V- 265V AC universal input range allows worldwide operation.
- Integrated high voltage constant current starting circuit, no need for additional starting resistance.
- Patent Primary Side Regulation control to simplify the circuit.
- Patent self-power supply circuit design, no need for auxiliary winding in transformer.
- Internal PMW oscillation circuit with Frequency jittering control to keep EMC characteristics.
- Over current, Over temperature, Over voltage and Short Circuit Protection.
- ±2% Voltage Accuracy, ±5%Current Accuracy.
- 4KV Anti-Static ESD test.
4. POWER RANGE
Input Voltage MAX. output power
85-264V AC 12W
Address: Building 18, Hejing industrial zone, Heping village, Fuyong, Baoan Area, Shenzhen, China.
Tel: 86-755-29598396
Email: amy@dkpower.cn
Website: ..dkpower.cn
SHENZHEN DONGKE SEMICONDUCTOR CO., LTD PSR CONSTANT CURRENT / VOLTAGE IC-DK912
5. CONNECTION DIAGRAM
PIN FUNCTION
Pin NO. Pin Name
Function
Staring pin, Connected with 2.2M resistor to OC pins
Connected to ground via resistor, to set the MAX. peak current
Primary side feedback control...
