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dknguyen said:THere are a bunch. But the LM5111/LM5112 or TPS812 (and the others in the same datasheet) will do it. THese are low-side drivers only. For high-side you would need either a floating (isolated) DC-DC converter, or more economically an IR2010 or some other IC like it.
Rds(on) is spec'ed at 10V. Vgs=+-20V (+-30V in the datasheet I looked at) is the absolute maximum limits, beyond which you may break down the gate.h.d said:the IRFP460 Vgs=+-20V
and the driver you added is 10V output
if the mosfet work in that Vgs i think the heating will be large,isn it?
That was the reason I asked the question. I should have also asked what his switching frequency and duty cycle is.Hero999 said:A single NPN is fine at low frequencies but a push pull NPN+PNP driver is required at higher frequencies.
Roff said:Rds(on) is spec'ed at 10V. Vgs=+-20V (+-30V in the datasheet I looked at) is the absolute maximum limits, beyond which you may break down the gate.
What are you driving with the RFP460? Many applications just need a simple level translator, which can be done with an NPN and a couple of resistors.
What is your PWM frequency?h.d said:i dont know how to determine the frequency?and which frequency you mean?
sorr for the lake question.
about the duety cycle for PWM
i have motor with 220 DC and ineed to varey the speed from 0 to full speed (2500rpm)
so the d.c will varey from 0 to 100%