Re: [PSUBS-MAILIST] PWM Controllers

[Subscuba@aol.com]

At least, and a bridge is what I would go with. You would probably have to parallel several in each leg of the bridge to avoid dissipation problems.

There are a number of ICs on the market to do the drive functions. I think ONSEMI has one. You would have to do the power stages. Layout of the power stages are the bear.

I would suggest IXYS as a starting vendor for the FETs. I think their site is "WWW.IXYS.com" they are not the only vendor.

Ken Martindale

> One other note on the price issue you brought up, though. A
> reversible speed controller requires a FET H bridge, which means
> twice the FETs. A forward only could be made for $5.00. A good
> reversible would easily hit $10.00.