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bipolar driver with A3986

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Russlk said:
The A3986 is designed to be used with mosfets. Why do you want to use bipolar?

I wont build stepper driver (with A3986) for bipolar stepper motor and I cann't find any scheme or PCB. I know A3986 use mosfets like IRF 540, but I donn't have experience design new project.
 
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I'm drawing driver on A3986...

**broken link removed**

Add or change something there ?
 
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IC1 - 7805
R1, R5, R6, R8 - ?
R2, R4, R7, R9 - ?
C7, C5, C6, C4 - ?? 220nf...
R10, R3 - (Imax=8A & Vrefmax=2V) => Rsens=2/(8*8) => Rsens=0.0313R... 0.025R (0.05R & 0.05R)

C1, C2, C3, C9, C10, C13, C12, C11 - 100nF
R12 - 10k
RN1 - 2.2K
R13, R14, R15 - 330R
R16 - ?? (560R)
R11 - 10k - 50k (datasheet)

Q1, Q1, Q3, Q4, Q5, Q6, Q7, Q8 - irfz24n 17A/55V Rds(on)=0.07R Qg(tot)=20nC
 
hi markcomp77
you preliminare version work ?
you have test it

i have order 3 from digikey
and like to build 3 driver to
bipolar stepper motor
i have motor 2.5volt and 4.5amp
and 6.1amp

sorry for my english

best regards

muale
 
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