Mosfet Driver

[tivoidethuong]

How to driver Mosfet P and N . Use trasitor, R,C and shocky diode. THANKS ALOT.

I want build Haft H-bridge to driver 5 phase stepper motor

[BCwanderer]

To dive a mosfet driver chip, use
ir2110 chips http://www.alldatasheet.com/datashee...RF/IR2110.html
ir2112
http://www.alldatasheet.com/datashee...RF/IR2112.html
ir2183 or ir2184
http://www.alldatasheet.com/datashee...RF/IR2184.html

[tivoidethuong]

Originally Posted by BCwanderer To dive a mosfet driver chip, use ir2110 chips http://www.alldatasheet.com/datashee...RF/IR2110.html ir2112 http://www.alldatasheet.com/datashee...RF/IR2112.html ir2183 or ir2184 http://www.alldatasheet.com/datashee...RF/IR2184.html

thanks your reply but i live in vietnam, i can't buy these IC. i need build driver buy descrect

[tivoidethuong]

How to fast driver?. Low side mosfet and High side mosfet in H-bridge.

[tivoidethuong]

How about these cricuit?

[NC Cams]

Look up application note #U-102 for the TI/Unitrode UC3637 switch mode motor controller.

You can download here:
http://focus.ti.com/docs/prod/folder...plicationnotes

Another app note can be found here:
http://focus.ti.com/lit/an/slua073/slua073.pdf

It shows a discrete based (part numbers and values) for high power fet based H (U-102) and half H bridges (U-112).

The discrete bridge example in U-102 can run at a PWM'd frequency of 30Khz

[tivoidethuong]

how about this shecmatic?

[tivoidethuong]

Originally Posted by NC Cams Look up application note #U-102 for the TI/Unitrode UC3637 switch mode motor controller. You can download here: http://focus.ti.com/docs/prod/folder...plicationnotes Another app note can be found here: http://focus.ti.com/lit/an/slua073/slua073.pdf It shows a discrete based (part numbers and values) for high power fet based H (U-102) and half H bridges (U-112). The discrete bridge example in U-102 can run at a PWM'd frequency of 30Khz

thanks you much, but in vietnam, i can't buy this IC .

[NC Cams]

I know that you can't buy IC from prior post. The application sheets posted shows 2 things:

1. How to apply/use the IC

and

2. How to build discrete power amp (including part numbers for all parts).

Importantly, it explains why the power amp is constructed as it is - this part of application note is simple assembly project.

Simply ignore section regarding part 1 above

and

Follow the section dealing with power amp construction (part 2 above.)

This is full and complet answer to your original question (how to build discrete based H/half H bridge with MOSFETS). I hope it helps you.

[tivoidethuong]

Ok. I have some shecma. I think that can help you use mosfet driver IC for Haft H-bridge

[ez-cnc.com]

Two good options(i think) for the mosfets that are very common and cheap here are

IRF540 (n channel)
Vdss 100V
Rds(on)0.077ohm
Id 28 amps
cost 0.88usd (in Argentina)
http://www.irf.com/product-info/data...ata/irf540.pdf

IRF9540 (pchannel)
Vdss -100V
Rds(on) 0.117 ohm
Id -23 amps
cost 1,3usd (here in Argentina)
http://www.irf.com/product-info/data...a/irf9540n.pdf

Im working on the schematic posted firs, i think it might work, bought everything and have it assembled just need to test it, ill let you know my results. I think with a little more logic it could be made more safe, i mean to preventa short on the same side

[tivoidethuong]

Originally Posted by ez-cnc.com Two good options(i think) for the mosfets that are very common and cheap here are IRF540 (n channel) Vdss 100V Rds(on)0.077ohm Id 28 amps cost 0.88usd (in Argentina) http://www.irf.com/product-info/data...ata/irf540.pdf IRF9540 (pchannel) Vdss -100V Rds(on) 0.117 ohm Id -23 amps cost 1,3usd (here in Argentina) http://www.irf.com/product-info/data...a/irf9540n.pdf Im working on the schematic posted firs, i think it might work, bought everything and have it assembled just need to test it, ill let you know my results. I think with a little more logic it could be made more safe, i mean to preventa short on the same side

Thanks your reply.
I use irf540/9540 too. and higher vol i use irf640/9640 (200V Vds)

I don't know how to protec mosfet, when mosfet low side and high side open, -->short cricuit Boommmmm, fire, bibobibo

We can driver direct from CMOS logic gate, use 12V for Vcc. but you can't driver faster 100khz. need add shocley diode or use push pul transitor driver it, can driver faster 400khz