UCC28811 PWM调光问题

折腾了一天没搞定，所以来请教一下各位工程师。

在UCC28811应用手册中（www.ti.com.cn/…/slua701.pdf）提到：5% to 100% Analog Dimming and 0.05% to 5% PWM Dimming Design Result。以及：Dimming design specification: PWM dimming and analog dimming are provided by the external signals. However, 0 to 10 V will be converted to the 2- to 5-V analog signal through the microchip, and 1% to 100% PWM dimming signal could have the direct control of the UCC28810/11 device.

1.我想问一下，是否能直接使用PWM 2 – 5V信号代替模拟调光信号控制？

2.PWM调光是否接到芯片VSNS端口上即可（应用手册中 Figure 7. Improved Solution for the UCC28810/11 PWM Dimming)？

3.TI有没有其它30V 50W PWM调光方案？

user4003041：

你的调光是PWM调光还是0-10V调光？

user4896371：

回复 Johnsin Tao:

请问 市电输入，30V50W的方案有吗？