![]() In terms of the NPN-PNP emitter follower configuration their is a good article on this by Robert Kollman on eetimes. A Youtube video on VFD breakdown I saw seemed to have independant totem poles for each but I'm not sure. Half Bridge/3Ph driver ICs or independent totem pole for each switch. Also it is extremely convenient to place them right next to the gate of the IGBT/MOSFET, so no stray inductance issues(Just 2 small transistors and a few smd resistors fit nicely next to the gate).Īlso most importantly, does anyone have any idea about what commercial VFD manufacturers use, i.e. Thus I can get an extremely powerful high current gate drive circuit at much less cost. What is drawing me towards the totem pole route is that a) It costs about 10 times less b) Current capacity is virtually no issue at all (Especially considering the fact that I will be using isolated supplies as it is and not be going for bootstrapping, and will have dead time in software itself) ![]() My question is that apart from the saving in space which allows for a compact design, what are the benefits of using off the shelf Gate Driver ICs ( like say IR2110,IR2186,IR2136) as opposed to making your own gate driver using a pair of npn,pnp transistors in totem pole configuration. I have been wondering about this for a while now, and couldn't find any proper comparison between the two. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |