Nicholas,

Try ZETEX part number ZHB6790CT.

2.5A continuous up to 40VDC.

Digikey even stocks them.

Craig

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Nicholas Irias
> Sent: July 23, 1999 12:01 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Driving a high voltage H-bridge from a PIC
>
>
> I'm trying to use a PIC to drive several 24 volt DC motors, using an
> H-bridge so I can get forward and reverse with speed control.  I'm just
> wondering what the easiest way is to drive the MOSFETS.
>
> It's easy to come up with a way to drive the low-side MOSFETS, since they
> only need 10 volts, but the high side MOSFETs need 34 volts at the gate.
> And at least the Maxim gate driver chips will only do 18 volts.
>
> So far, the only suitable driver I have found is the IR2110 from
> International Rectifier.  Is this a good way to drive the H-bridge, or is
> there a better, simpler way to make this work?
>
> -Nicholas
>