Re: quad 1/2 bridge

On Mon, 23 Sep 2024 14:59:25 GMT, Jan Panteltje <alien@comet.invalid>
wrote:

On a sunny day (Mon, 23 Sep 2024 07:15:43 -0700) it happened john larkin
<JL@gct.com> wrote in <abt2fj53dcek89n4f9b67c9ca0a1nd8cgn@4ax.com>:
>

>
https://www.digikey.com/en/products/detail/texas-instruments/DRV8962DDWR/18724317
>
Four half-bridge switchers for about $5. Current and thermal limiting.
I was about to dremel and test my own half-bridge driver, but won't
now. I guess I'll have to shuffle up the abstraction stack.
>
There must be something cool that these could be used for. A
16-channel power supply?

>
4 channel audio amp?

Half-bridge audio amps can be tricky. At that price, may as well go
full-bridge. A half-bridge switcher can pump power uphill, back into
the power supply.

I wonder if we can get our little RP2040 cpu chip to do a multichannel
closed-loop supply, and maybe generate spread-spectrum PWM on 8
channels.

Phil, the 8962 data sheet discusses driving TECs.