TI中文支持网如题，买了个UCC29910评估板，准备测试验证一下性能。
第一次测试的时候，没有打开板子的ON就上电，结果空气开关炸了。
第二次测试的时候，严格按照评估板说明书的测试步骤，但是有检测到输出波形，求TI技术支持解惑。
user5800893：
打错了，第二次没有检测到输出电压电流波形，且两次是不同的板子
user5800893：
打错了，第二次没有检测到输出电压和电流波形，第二次用的是新板子
Lin Zhao：
你好，应严格按照以下步骤，是否有turn on 10V的bias？另外建议可以更换29910做一下交叉测试
Power Factor and Efficiency Measurement Procedure
1. Check the switch S1 at ON position. If S1 is not at ON position, switch S1 to the position ON.
2. Turn on the ventilation fan and keep the fan in operation during the time of test.
3. Set the AC source voltage to 115 VAC and frequency to 60 Hz. But keep the AC source powered off
4. Prior to connecting the AC source, set the current to 2.5-A peak and 2.5-A limit. Connecting AC source
to LINE and NEUTRAL terminals as shown in Figure 2.
5. Connect voltmeter V1 across the J3 as shown in Figure 2.
6. Connect ammeter A1 to J3 positive terminal and connect ammeter A1 to Load-1. Then connect Load-1
negative terminal to J3 negative terminal.
7. Connect 10-V Bias to J1, turn on 10-V Bias.
8. Set Load-1 to constant current mode to sink 0.2 ADC and set Load-1 at 100 VDC input range before
turning on the AC source.
9. Turn on the AC source.
10. Varying the load current from 0.2 A to 1.2 A, along with the load current variation:
(a) Read input voltage, input real power, and power factor from the AC source.
(b) Read output voltage and output current from V1 and A1.
11. Turn off the AC source.
12. Set the AC source voltage to 230 VAC and frequency to 50 Hz.
13. Repeat step 8 and 10
Johnsin Tao：
回复 Lin Zhao:
Hi 测试前看一下板子表面是否有损坏？ （TI很多板子到客户端的时候，板子在运输中有损坏的）确认没有问题后，在通电测试
user5800893：
回复 Lin Zhao:
哦哦，好的好的，我这几天再重新检测并测试一下，谢谢您哦
user5800893：
回复 Johnsin Tao:
哦哦，好的，我再检查一下重新测试看看行不行，谢谢您！
user5800893：
回复 Johnsin Tao:
哦哦，好的，我这几天再重新检测测试一下，谢谢您！
