Can the LM74670 be used to replace a full-wave bridge used to insure proper DC polarity selection?
My input criteria is a DC input of 4V-40V DC @ up to 15Amps, and I want to use a bridge to insure the proper polarity is observed. Would rather not use a bridge that would dissipate a fair amount of power if I don't have to, and it seems that if my input was AC there would be no concern, but in this case, my input is DC.
Hi David,
In case you want to rectify the input (irrespective of polarity) and supply only +ve voltage at load, you will have to use a full bridge rectifier. You can have a look at below reference design for this approach.
12-VAC to 28-VAC, 7.5-W to 25-W ideal diode full-bridge rectifier reference design - PMP22504
In case you just want to block -ve voltage at input and only allow +ve voltage to the load, the solution would be simple. You can consider using 1x LM74700-Q1 for input reverse polarity protection.
