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寬輸入電壓疑問
针对方案:基於ON NCP12700的15W LED照明驅動電源方案
你好，看到你的方案具備達120V的寬輸入電壓範圍，這個是很不錯的，挺吸引人的
好像demo板及測試報告都只有9-36Vin的應用。
但請問有實際的測試報告可以參考嗎? 這麼寬的輸入電壓想請問回授這邊要如何處理?
這麼寬的輸入電壓能夠應用在調光產品嗎?
謝謝
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最佳解
The NCP12700 is a fixed frequency, peak current mode, PWM controller. so that the frequency compensation will be fine tune by NCP12700 COMP pin and 2nd side feedback network. (just like NCP431 or CC-CV controller or OP amp)
It is necessary to redesign the main FLYBACK transformer for better operation with higher input voltage (>36V).
You can visit ONSEMI official webside and link below address for the NCP12700WIDEVINGEVB information.
https://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCP12700WIDEVINGEVB.
It will show you more information and technical documents about NCP12700 16-160V evaluation board. Thanks!
1F
