From: Manu Abraham <abraham.manu@gmail.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Fri, 4 Dec 2020 09:57:35 -0800
Subject: Re: [EE] Piezo driver
Thread-Topic: [EE] Piezo driver
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On Wed, Dec 2, 2020 at 12:48 AM Jason White
<whitewaterssoftwareinfo@gmail.com> wrote:
>
> Discrete solution: N channel FETs in H-bridge configuration plus beefy ga=
te
> driver. 1-2Mhz switching frequencies are pretty commonly in SMPS design.
> You might find an SMPS controller with integrated FETs and make it do you=
r
> bidding by altering the voltage at the feedback pin.

Regarding the discrete solution, what gate driver/MOSFET do you have in min=
d ?

A SMPS controller cannot work for the simple reason is that the
frequency is fixed internally
by the controller. Simple controllers such as the SG3524 do have
external RC components
to set the frequency, but such legacy controllers run at relatively
lower frequencies.

Thanks,

Manu
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