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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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17th Jun 2017, 2:59 pm | #21 |
Dekatron
Join Date: Feb 2007
Location: Lynton, N. Devon, UK.
Posts: 7,061
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Re: How to ensure 10uA max into a gate driver chip
Oooh yes, as Chris says, driver chips are designed to turn the MOSFET either hard on or hard off. If you want to use the FET as an analogue device, in its saturation region as an amplifier dealing with sine waves, that's a different kettle of fish. You'll need probably to come up with your own drive circuit, but the job will probably be easier.
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17th Jun 2017, 5:04 pm | #22 |
Dekatron
Join Date: Nov 2006
Location: London, UK.
Posts: 3,496
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Re: How to ensure 10uA max into a gate driver chip
Chris: well spotted, thanks. I've noticed that it is in the linear region with bias of 4.1V. After that , even additional small increments of bias lead to disproportionate current flow, such that thermal runaway isn't far away.
Peter: I will try the MOSFET in both modes; I'm curious to see just how efficient class D/E can be, with the driver chip, compared to class A and another type of gate drive signal.
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