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DK1203
Features
· 85V—265V wide range AC power input.
· Build-in 700V power transistor.
· Internal integrated high voltage starting circuit, no need for additional resistance.
· Integrated self-start circuit.
· Pulse-Width Modulation (PWM) controlled system.
· VCC operating voltage range: 4-6V.
· 65kHz switching frequency.
· Automatically turn to skip cycle mode under light load condition.
· Over current, Over loading, Over temperature and Over voltage Protection.
· Standby power consumption
Overview
DK1203 is a flyback subside feedback switching power supply control chip. AC-DC switching power supply for high-performance, compact peripheral components. The chip provides extremely comprehensive and high-performance intelligent protection functions, including output short circuit, secondary open circuit, overtemperature,
Overpressure and other functions. The hybrid technology of Burst-mode, dynamic PFM and Hi-mode is used to achieve ultra-low standby power consumption and optimal efficiency in the full voltage range. 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
· 85V—265V wide range AC power input.
· Build-in 700V power transistor.
· Internal integrated high voltage starting circuit, no need for additional resistance.
· Integrated self-start circuit.
· Pulse-Width Modulation (PWM) controlled system.
· VCC operating voltage range: 4-6V.
· 65kHz switching frequency.
· Automatically turn to skip cycle mode under light load condition.
· Over current, Over loading, Over temperature and Over voltage Protection.
· Standby power consumption lower then 0.3W.
· Internal frequency modulation circuit to reduce EMI filter cost.
Applications
· AC/DC power adapters
· Air conditioner power supply
· DVB power supply
· TV/Monitor power supply
· DVD/VCD power supply
· Electromagnetic oven power supply
· LED driver applications
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