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[参考译文] UCC28019:升压未激活

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Other Parts Discussed in Thread: UCC28019

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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1105162/ucc28019-boost-not-active

器件型号:UCC28019

大家好、

我将讨论 UCC28019的 PFC 设计、最大功率为700W 但我无法获得390V 的输出目标电压。我在上一个实验中获得的测量结果如下;

ICOMP = 0.96
Isense:0V
VIN = 4.25V
Vcomp = 7.47V
Vsense = 4.15V
VCC=14.73V
栅极:12V
Vout=324.4
VIN=230VAC

栅极引脚上的电压为12V、Vcomp 引脚超过数据表中指定的限值是不正常的。
您认为问题的根源是什么?您建议我做什么?  

此致、

Cihangir