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Searching a high-side driver ic for a p-channel MOSFET, do you know any?
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Jajaho:
Hey guys,

thank you for tuning in.
I'm on a project controlling a valve with a high side switch using PWM.

I have these requirements:

Supply voltage: 8 - 32V
Switching current: up to 10A
Switching frequency: up to 10kHz


I already have a suitable p-channel enhancement MOSFET.
What I'm still looking for is a suitable driver for it.
There is plenty of ic' for NMOS high side switches, but I can't find any suitable for PMOSFETs.
Since I also have to hand solder them so TQFN ones are not an option.

I was wondering if you guys have an ic I wasn't able to find.
Your help is much appreciated.
SiliconWizard:
I've used the LTC1693-5 for that, but it's only 13.2V max.

As you noticed, there are far fewer options for PMOS gate drivers.
What's the PMOS transistor you selected? Could you post the reference so we can suggest solutions? (For instance its max VGS could be a criterion...)

Jajaho:
Hello,

I also took a look at that one, but yeah since I'm working with a Vcc of up to 32V it's unfortunately not an option.

The MOSFET is an Infineon one with an absolute maximum gate voltage of +/-20V.
I don't have the exact name at the moment, but I could post that tomorrow.

IconicPCB:
there are high side smart fets which may be suitable in their own right (no need for a separate driver.
langwadt:

--- Quote from: IconicPCB on August 04, 2019, 09:03:11 pm ---there are high side smart fets which may be suitable in their own right (no need for a separate driver.

--- End quote ---

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