Of course there are switching losses but those are also less with an FET than a bipolar. (.022 * 3.5A * 2) or 0.154 watts because you have two on at once. With that device's 22 milliohm RDSon your power will be FETs are relatively cheap, you can buy 5 pcs. The part is an Intersil HIP4082 and has the reference design in the data sheet. All you do is give the IC logic inputs such as from an Arduino and away you go. If you use FETs, there is a cookbook solution with really low parts count that has the 'cross conduction' protection built into it and also a delay timer to prevent 'shoot through'.

Since you have two on at any given time, you are hit with a (4V * 3.5A) or 14 Watt penalty right off the bat, and you haven't added switching losses.Īlso, the parts count goes WAY up. The transistors you've chosen come with a penalty: They will at best give you a 2V drop since they are Darlingtons. Using FETs gives you absolutely the most efficient bridge. Then what type of circuit would you recommend? I have to use the BDV66B and Is this because you already purchased them? Or did your instructor say to use Bipolars? Includes schematics and circuit examples. Learning how to use power MOSFETs by building an H-bridge motor control. H-Bridge Motor Control Using Power MOSFETS Your previous comments that don't consider the OP's request for 24V and Bipolar transistors make me wonder who is even silly enough to follow your advice that you just copied from another web site anyway. The fact that you don't and aren't willing to research it yourself causes me no loss of sleep. Please Google it and understand it before your feeble attempt to SLAM me. I'm sure anyone that's ever designed an H-Bridge and attempted to run same above 15Khz understands 'shoot through'. As I've said from the start, a newbie has no business attempting to design an H-Bridge. If you are not going to explain this feature with a schematic, then don't bring up the subject because you are alone in your I doubt I am having a one way conversation.

Otherwise you are having a one way conversation, citing concepts that nobody else is familiar with.

Dc motor control with hip4082