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Trouble with TOP259YN

Posted by: jean.romain.durand on

Hello,

 

I have some trouble with TOP259YN.

Few IC have the G pin and the S pin with high Z when I connect an ohm meter.

Should It have a low Z  betwin this two pin?

 

Regards,

Jean-Romain

 

Comments

Submitted by VCastrellon on 10/09/2014

You should  measure  low impedance because the pins are internally connected. The reason to have them separated outside the chip is to have a zero reference inside the chip. In other wors, to avoide the voltage drop of the SOURCE leg due to its ohmic resistance

 

Submitted by jean.romain.durand on 10/09/2014

In reply to by PI-Surak

thank you for your quick reply!

 

So, If I measure a hight impedance, the chip should be damaged?

 

Regards,

Jean-Romain