Ipw90r340c3用于dcdc全桥电路异常损坏

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User20724
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ipw90r340c3用于dcdc全桥电路上,全桥拓扑的输入电压500v左右,

一个产品用4个ipw90r340c3,分别为q0500,q0501,q0502,q0503。

s101和s103引脚接变压器的主边,变压器的副边接同步整流电路输出24v,变压器匝数比为12:1

损坏的时候一般是在满载工作时损坏,器件损坏时测试ds级短路。
且该器件损坏时都是上桥两个器件(q0500,q0502)同时损坏,
器件损坏之后只更换对应两个器件,再测试,能正常带满载,
且持续长时间测试也不再出现损坏,
测量器件峰值电压和电流都是正常的,所以无法抓到损坏瞬间的电压电流情况。

请协助分析下异常原因?电路方面设计是否合理?以及改善措施?
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Eswar_K
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Hello customer,
due some software glitch we couldn't read the text properly. If you would like to ask any question please raise it as new question in Infineon Community.

Regards,

Eswar

View solution in original post

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User20724
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ipw90r340c3 应用电路中,输入电压500v ,选型是否合理?
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ciji_4336356
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您好,请问您是否可以用英语重复下您的问题,谢谢。
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User20724
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IPW90R340C3 the devices used in DCDC full bridge circuit, full bridge topology circuit,

Input voltage 500 v,
A product with 4 IPW90R340C3, location is Q0500 Q0501, Q0502, Q0503

(bridge circuit on Q0500 Q0502) often is damaged, defective rate 1%。
(Q0500 Q0502) to replace two new devices, test, load can work normally.

And test for a relatively long time also no longer appear damaged, measuring device peak voltage and current are normal。





What reason? How to improve?
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User20724
Level 1
Level 1
First question asked First reply posted
circlejhx wrote:
您好,请问您是否可以用英语重复下您的问题,谢谢。


IPW90R340C3 the devices used in DCDC full bridge circuit, full bridge topology circuit,

Input voltage 500 v,
A product with 4 IPW90R340C3, location is Q0500 Q0501, Q0502, Q0503

(bridge circuit on Q0500 Q0502) often is damaged, defective rate 1%。
(Q0500 Q0502) to replace two new devices, test, load can work normally.

And test for a relatively long time also no longer appear damaged, measuring device peak voltage and current are normal。





What reason? How to improve?
0 Likes
Eswar_K
Moderator
Moderator
Moderator
25 sign-ins First solution authored First reply posted

Hello customer,
due some software glitch we couldn't read the text properly. If you would like to ask any question please raise it as new question in Infineon Community.

Regards,

Eswar

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