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Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
I was wondering what these driver chips (TC4449 and UC37322/1) have it especial. I was wondering if I can use the CD4007 (CMOS Dual Complementary Mos Pair + Inverter, see the datasheet, its interessant, it have 2 idependent Mosfets).
I was talking about that, because on Brazil I didnt Found that Chips, for you have some Idea, if I put on Google Brasil, UC37322 I dont found any pages :P
Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
Not even close. Driver chips need to source very high current (in ampere range) in short amount of time to charge and discharge capacitive load rapidly. Discrete solutions are possible but rather tricky and not well researched.
You should be able to get some UCC?s from digikey, from some of forum members or from TI as samples (if they'll ship to you?)
Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
Digikey supports PayPal or something else? or Someone supports that? because its a safe method, and I can use it (I am using to buy a FPGA from knjn) , I will see if a member can send me. Thxx...
Registered Member #160
Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938
I couldn't find those UCC's here in Australia either, the closest I got are the TC4420 & TC4429. They don't source the 9A that those UCC's do, but 6A is pretty close. Try looking for those over there.
Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
I think its easier I made a driver, isnt it? Here I can find all mosfets (including the high current ones, that can handle 300A continuous!), I think the K2049 or IRF540 (+ the P equivalent or other with invert input), with a 4007 it. Its good to make that?
Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
Hi all, I have found the TC4420CPA here in brazil to buy (yes I found it :D), I see on the datasheet, it can handle 6 Amperes, thats is suficiente for GDT Driving?
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Mestre Racerxdl wrote ...
Hi all, I have found the TC4420CPA here in brazil to buy (yes I found it :D), I see on the datasheet, it can handle 6 Amperes, thats is suficiente for GDT Driving?
It depends on the particular device you are switching. Anyways, you can always parallel gate driver chips to get more current capability. Some people even stack these right on top of another.
Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
I will drive some Mosfets IRFP460 with GDT. I dont know if its Expensive, but on Brazil the TC4420 its R$12 (Arround US$6), the IRFP460 its cheaper than TC4420 here is R$8 (Arround US$4). I will buy some of TC4420 (Its the only drive chip that I found here) and test it.
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GDT Drive Chips
