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Design >> High-Power Design >> Analog Switch Problem
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Message started by bki on Oct 27^th, 2014, 8:51am

Title: Analog Switch Problem
Post by bki on Oct 27^th, 2014, 8:51am

Hi,

i try to connect -40V charge pump output to the load by use of an Analog Switch. I though of attached idea of implementation in the red box.

The concept with PMOS transistors is perfectly working for a 150V supply, but i have problems with the attached NMOS implementation for -40V.

What can be the problem here?

Title: Re: Analog Switch Problem
Post by loose-electron on Oct 28^th, 2014, 10:09am

voltages of all nodes and more information about the ttransistors being used are needed