PowerInt TOP266VG 30W电源参考设计
PowerInt 公司的TOPSwitch-JX系列产品具有高性价比，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。在265VAC时无负载的功耗小于100mW，工作频率132kHz，降低变压器和电源尺寸。本文介绍了TOPSwitch-JX系列产品主要特性，功能方框图，以及高效19V 65W电路图和无负载功耗非常低的高效12V 30W电路图，采用TOPSwitch®-JX TOP266VG的30W电源参考设计主要特性，电路图和所用材料清单(BOM)。
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.
TOPSwitch-JX系列产品主要特性：
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
• Optimized line feed-forward for line ripple rejection
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