Timeline for Designing 80V CMOS Circuit
Current License: CC BY-SA 3.0
6 events
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| Apr 13, 2017 at 12:32 | history | edited | CommunityBot |
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| Jan 19, 2015 at 16:00 | comment | added | Andy aka | @AhmedTarhan you won't find a MOSFET with a gate drive bigger than 25V and your basic circuit still wouldn't work if you did find one. If you can't use an op-amp you have to use a high side driver. t the very minimum, this requires another transistor and two more resistors. | |
| Jan 19, 2015 at 15:28 | comment | added | WhatRoughBeast | Lots of luck. Which is to say - you're out of luck on this one. You'll need a more complicated gate drive circuit. Fortunately for you, you don't need much performance, so it shouldn't be too hard. | |
| Jan 19, 2015 at 15:02 | comment | added | Ahmed Tarhan | Thanks for information. I have lots of pwm channels (around 100) in this circuit. Since the costs increased drastically,I can not use an op-amp circuitry for all channels. I have to keep the cost a bit low. Therefore I tried to solve the problem with mosfets.Now I have to find another mosfet with a Vgs bigger than 80V. Do you have any idea ? | |
| Jan 19, 2015 at 14:54 | vote | accept | Ahmed Tarhan | ||
| Jan 19, 2015 at 14:45 | history | answered | Andy aka | CC BY-SA 3.0 |