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LM5170EVM-BIDIR: LM5170 焊接好,HO/LO不起振,没有波形出来

Part Number: LM5170EVM-BIDIR
Other Parts Discussed in Thread: LM5170

LM5170 芯片焊接好后,按照IT推荐的电路,供电10v, 输入48v,  

 需要检查哪些PIN ?

下面是测量到的PIN的电压:

SN LM5170 PIN 电压
1 EN1 2.5V
2 EN2 5V
3 nFAULT 5V
4 UVLO 5V
5 DIR 5V
6 HB1 10V
7 HB2 10V
8 VINX 48V
9 RAMP1 2.3V
10 RAMP2 2.3V
11 OSC 1V
12 OVPA 0.8V
13 HO1 3.3V
14 HO2 3.3V
15 OPT 9.8V
16 SYNCIN 0V
17 SYNCOUT 0V