This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
現有量產20W電源使用ST的UC2845，輸出5V4A。后來因貨源問題換用TI的此芯片，結果該電源在輕負載輸出時電壓偏高至6V多，帶載完好。更換變壓器及外圍器件均未解決。難道各家的2845存在很大的差異性嗎？
ST和TI不会有如此大差异。
现在；供货确实是个头疼的问题。建议和你的供应商联系；确认IC身份。
