I need to control, with a µC, 4 single-coil latching relays and I am exploring various options. My first bet would be a H-Bridge. Since H-bridge ICs are quite expensive and are mostly designed to drive motors but discrete components would use a lot of space, I thought I would use a TD62783 for the high side and a ULN2803A for the low side. I attach a screenshot of part of my schematics
- K1 = Single-Coil, Latching relay
- Q1 = ULN2803A
- Q2 = TD62783
Would this combination work? If not, what needs to be changed and why?
UPDATE: The relay is a 12V operated and will switch 230V AC current. Part number: G6CU-117P-US
PS: Thanks for the answers, interesting solutions. My original question was however, if my solution would work and if not, why not. I am quite curious to have an answer for that.