本帖最后由 ElectronF0 于 2015-2-11 22:38 编辑
谢谢大哥指点！
芯片还没拿到手，还没法测。现在还在原理图设计阶段。
研究下大哥说的：
Pin7：斜坡输入（Non-inverting input to the PWM comparator with 1.25-V internal input offset. In voltage mode operation, this serves as the input voltage feed-forward function by using the CT ramp. In peak current mode operation, this serves as the slope compensation input.）
pin6：Tr 定时电容（Timing capacitor connection pin for oscillator frequency programming. The timing capacitor should be connected to the device ground using minimal trace length.）
没看明白，这样怎么能测出 芯片的工作电压呢 ？！:'(还望大哥详述！小弟不胜感激！
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