Powerint LinkSwitch-II 3.25W 2011欧标充电器解决方案

Powerint公司的LinkSwitch-II系列集成了700V功率MOSFET,新颖的ON/OFF控制论状态机,用于自偏压的高压开关电流源,频率抖擞,逐个周期的限流以及滞后的热关断电路,不需要光耦和所有的次级CV/CC控制电路以及所有的控制回路补偿电路,从而大大地简化了CV/CC转换器,主要用在手机,PDA,MP3等充电器以及适配器,LED驱动器等.本文介绍了LinkSwitch-II系列产品亮点,方框图, 节能USB充电器电源电路图, 无偏压电源的反激电源电路图以及采用LinkSwitch-II系列的低成本符合2011欧洲标准的3.25W CV/CC充电器主要指标和特性,电路图,材料清单和PCB布局图.

The LinkSwitch-II dramatically simplifies low power CV/CC charger designs by eliminating an optocoupler and secondary control circuitry. The device introduces a revolutionary control technique to provide very tight output voltage and current regulation, compensating for transformer and internal parameter tolerances along with input voltage variations.

The device incorporates a 700 V power MOSFET, a novel ON/OFF control state machine, a high voltage switched current source for self biasing, frequency jittering, cycle-by-cycle current limit and hysteretic thermal shutdown circuitry onto a monolithic IC.

LinkSwitch-II产品亮点:

Dramatically Simplifies CV/CC Converters

• Eliminates optocoupler and all secondary CV/CC control circuitry

• Eliminates all control loop compensation circuitry

Advanced Performance Features
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