Powerint TOP266EG 27W LCD监视器电源方案

Powerint 公司的TOPSwitch-JX 系列TOP266EG是高性价比器件，它集成了725V　功率MOSFET，高压开关电流源，多模式PWM控制，振荡器，热关断电路，故障保护以及其它控制电路．265 VAC时无负载的功耗低于100 mW，工作频率132 kHz，降低了变压器尺寸和电源的体积．本文介绍了TOPSwitch-JX 系列主要特性，产品亮点，功能方框图，以及65W 19V和30W 12V通用输入反激电源电路图，27W LCD监视器电源参考设计主要指标，电路图以及所用材料清单(BOM)．

Power Supply Using TOP266EG

90 VAC–265 VAC Input; 5V, 2.5A and　14.5V, 1A Outputs

Application LCD Monitor

TOPSwitch-JX cost effectively incorporates a 725 V power MOSFET, high voltage switched current source, multi-mode PWM control, oscillator, thermal shutdown circuit, fault protection and other control circuitry onto a monolithic device.

TOP266EG产品亮点：

• EcoSmart® - Energy Efficient

• Energy efficient over entire load range

• No-load consumption below 100 mW at 265 VAC

• Up to 750 mW standby output power for 1 W input at 230 VAC High Design Flexibility for Low System Cost

• Multi-mode PWM control maximizes efficiency at all loads

• 132 kHz operation reduces transformer and power supply size

• 66 kHz option for highest efficiency requirements

• Accurate programmable current limit
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