Hi to all. I am looking at re-designing a h-bridge circuit that we use in one of out products , to try and reduce cost. It uses 4 n-channel mosfets and 2 high/low side drivers. (IR2104 's). The cost of these is quite high.Betwen $0.7 and $0.8.These chips are rated for use up to 600V but for this product 36V would be fine. It's a 12V system.Rated current up to 15A A quick look at doing a discrete solution showed(at firsh glance)it to be impractical. The number of components used and the board space requited, showed it probably would not be a much cheaper solution(if at all). A simple discrete solution would also not have built in dead time control.
Are there any cheaper High/low side drivers out there that would be good for the job. I have looked at ON semi and IRF , but all similar chips are also just as expencive or more so. Are we maybe at the cheapest solution already and I'm wasting my time.
Cheers Rob