TPS54362-HT: TPS54362-HT空载时输入侧有80mA左右电流，请问这个正常吗？

TPS54362-HT空载时输入侧有80mA左右电流（输入24V,输出12V），请问这个正常吗？

Links：

您好，

理论上是不正常的，该器件的静态电流是65uA，考虑到其他损耗，空载应该不会超过这个值太多。建议查看我们的EVM的电路

https://www.ti.com/tool/cn/TPS54362BEVM

TRANSLATE with x

English

Arabic
Hebrew
Polish

Bulgarian
Hindi
Portuguese

Catalan
Hmong Daw
Romanian

Chinese Simplified
Hungarian
Russian

Chinese Traditional
Indonesian
Slovak

Czech
Italian
Slovenian

Danish
Japanese
Spanish

Dutch
Klingon
Swedish

English
Korean
Thai

Estonian
Latvian
Turkish

Finnish
Lithuanian
Ukrainian

French
Malay
Urdu

German
Maltese
Vietnamese

Greek
Norwegian
Welsh

Haitian Creole
Persian

TRANSLATE with

COPY THE URL BELOW

Back

EMBED THE SNIPPET BELOW IN YOUR SITE

Enable collaborative features and customize widget: Bing Webmaster Portal
Back

,

limei wang：

这个怎么理解，通常情况都是没有过压,没过压的情况下都有80mA的电流。

,

Links：

ILimit（防止过冲）为80mA，意味着在输出电压（VReg）低于设定的过压阈值（OV_TH）时，器件会限制输出电流至80mA，以防止过冲或损坏。

TRANSLATE with x

English

Arabic
Hebrew
Polish

Bulgarian
Hindi
Portuguese

Catalan
Hmong Daw
Romanian

Chinese Simplified
Hungarian
Russian

Chinese Traditional
Indonesian
Slovak

Czech
Italian
Slovenian

Danish
Japanese
Spanish

Dutch
Klingon
Swedish

English
Korean
Thai

Estonian
Latvian
Turkish

Finnish
Lithuanian
Ukrainian

French
Malay
Urdu

German
Maltese
Vietnamese

Greek
Norwegian
Welsh

Haitian Creole
Persian

TRANSLATE with

COPY THE URL BELOW

Back

EMBED THE SNIPPET BELOW IN YOUR SITE

Enable collaborative features and customize widget: Bing Webmaster Portal
Back

,

limei wang：

没太理解，输出电压（VReg）低于设定的过压阈值（OV_TH）时，器件会限制输出电流至80mA。OV_TH是过压门限，正常工作时通常都是不过压的，即0<OV_TH<0.8V，按这样说的话器件会一直限制输出电流至80mA?

,

Links：

在正常工作条件下，如果OV_TH没有触发过压保护，TPS54362-HT将根据负载需求提供电流，而不是一直限制在80 mA。只有在特定的故障条件下，器件才会限制输出电流以保护自身和负载。

TRANSLATE with x

English

Arabic
Hebrew
Polish

Bulgarian
Hindi
Portuguese

Catalan
Hmong Daw
Romanian

Chinese Simplified
Hungarian
Russian

Chinese Traditional
Indonesian
Slovak

Czech
Italian
Slovenian

Danish
Japanese
Spanish

Dutch
Klingon
Swedish

English
Korean
Thai

Estonian
Latvian
Turkish

Finnish
Lithuanian
Ukrainian

French
Malay
Urdu

German
Maltese
Vietnamese

Greek
Norwegian
Welsh

Haitian Creole
Persian

TRANSLATE with

COPY THE URL BELOW

Back

EMBED THE SNIPPET BELOW IN YOUR SITE

Enable collaborative features and customize widget: Bing Webmaster Portal
Back

,

limei wang：

想问一下：0<OV_TH<0.8V是指过压状态吗？还是OV_TH>0.8V是过压状态？

,

Links：

当 OV_TH > 0.8V 时，表示过压保护功能被启用，否则关闭。

如有其他问题，请重新发布一个新帖。

TRANSLATE with x

English

Arabic
Hebrew
Polish

Bulgarian
Hindi
Portuguese

Catalan
Hmong Daw
Romanian

Chinese Simplified
Hungarian
Russian

Chinese Traditional
Indonesian
Slovak

Czech
Italian
Slovenian

Danish
Japanese
Spanish

Dutch
Klingon
Swedish

English
Korean
Thai

Estonian
Latvian
Turkish

Finnish
Lithuanian
Ukrainian

French
Malay
Urdu

German
Maltese
Vietnamese

Greek
Norwegian
Welsh

Haitian Creole
Persian

TRANSLATE with

COPY THE URL BELOW

Back

EMBED THE SNIPPET BELOW IN YOUR SITE

Enable collaborative features and customize widget: Bing Webmaster Portal
Back