Thanks Bill. That looks quite good. A little more $ than I'd hoped for not too bad. It's hard to find things like this sometimes as you don't quite know what category the supplier has pigeon holed them as! David... Bill Krause wrote: > http://focus.ti.com/lit/ds/symlink/drv8402.pdf > > --- On Sun, 2/15/09, David Duffy (AVD) wrote: > From: David Duffy (AVD) > Subject: [EE]: DC Motor Drive Chips 5A ? > To: "Microcontroller discussion list - Public." > Date: Sunday, February 15, 2009, 5:00 PM > > Hi guys, > I'm looking for an IC with integrated H-bridge and some smarts to drive > some 24V DC (brush type) motors. I did a prototype with the Allegro > A3949 & A3950 parts which worked well. Now the client has moved the goal > posts on us. The motor they want to use now draws approx 3.5 Amps at > full load. The chip also needs to be able to handle the motor being > stalled for short periods. (until I sense the increase in current and > shut it off - a few 100 ms) > > I've been scouring the usual semi companies and parts suppliers, but am > yet to find something that doesn't use external FETs or cost an arm and > a leg. Has anyone else been down that road? I'd rather the all in one > chip solution as they seem to be better at being fault tolerant. Maybe > there are motor controller / output pack chip sets that I haven't seen yet? > David... > > -- ___________________________________________ David Duffy Audio Visual Devices P/L Unit 8, 10 Hook St, Capalaba 4157 Australia Ph: +61 7 38235717 Fax: +61 7 38234717 Our Web Site: www.audiovisualdevices.com.au ___________________________________________ -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist