Post by thread:Low side solenoid drivers

Hi I want to use a pic to control 4 solenoids using a quad driver to provide solenoid ground. The total current for all 4 solenoids in less than 3 amps. Can anyone recommend a quad driver? I found one for driving fuel injectors, but it is $11.00. I was wondering if I could use those h-bridge chips, I think it is L297 (or L298)? Thanks Jon

Recently I completed a project using Alegro 2998 parts, nice and easy, to drive two stepper motor size #23, 1.2 amp per phase, two phases per motor. Driver outputs are not FET, but bipolar, so it heats, and requires a heatsink nice and big with a fan. Ok, board is ready and produced in quantities, no problem, still using the Alegro part. Just for fun, I built a discrete output driver, using regular IRF530 (14A) transistors and a isolation 74HCT14 just for precaution. The transistors don't even need heatsink, cost $0.50 at Netbuy (in quantity). So, hmmm, don't discard the possibility to use FET transistors. Wagner. Jon Petty wrote: {Quote hidden}> > Hi > > I want to use a pic to control 4 solenoids using a quad driver to provide > solenoid ground. The total current for all 4 solenoids in less than 3 amps. > > Can anyone recommend a quad driver? I found one for driving fuel injectors, > but it is $11.00. > > I was wondering if I could use those h-bridge chips, I think it is L297 (or > L298)? > > Thanks

I use STA401's from my junk box, I think you can get an equiv UDN part, don't know cost or more details sorry. You could just use some power transistors etc. cya, Andrew... > {Original Message removed}

If this is a one off or small volume application you can do this very cheaply (very possibly most cheaply) using 4 discrete transistors. Suitably rated TO92 transistors probably cost a few 10's of cents each if that. A TO220 pkg may be advisable if you have long on times. Russell McMahon _____________________________ >From another world - http://www.easttimor.com What can one man* do? Help the hungry at no cost to yourself! at http://www.thehungersite.com/ (* - or woman, child or internet enabled intelligent entity :-)) >I want to use a pic to control 4 solenoids using a quad driver to provide >solenoid ground. The total current for all 4 solenoids in less than 3 amps.

Jon, I am not sure about the price but we use CS-453 4.4amps injector solenoid driver from Cherry Semiconductor. I already tested it is excellent driver. I have 2 spare parts if you need it I can mail it to you. it is To-220 package 5 pins Andre Abelian > Hi > > I want to use a pic to control 4 solenoids using a quad driver to provide > solenoid ground. The total current for all 4 solenoids in less than 3 amps. > > Can anyone recommend a quad driver? I found one for driving fuel injectors, > but it is $11.00. > > I was wondering if I could use those h-bridge chips, I think it is L297 (or > L298)? > > Thanks > > > Jon >

Hi Jon, try TI's Power+ series (eg. TPIC6245). They are 8 bit, but price about $3. (see Mashall). Jan. {Quote hidden}> > Hi > > I want to use a pic to control 4 solenoids using a quad driver to provide > solenoid ground. The total current for all 4 solenoids in less than 3 amps. > > Can anyone recommend a quad driver? I found one for driving fuel injectors, > but it is $11.00. > > I was wondering if I could use those h-bridge chips, I think it is L297 (or > L298)? > > Thanks > > Jon