DRV 8332

vu thang

Other Parts Discussed in Thread: DRV8332

Hi I am using Drv 8332 conected to TIva tm4c123 g kit

My motor can work but sometime when I tried change fast pulse PWM (control speed) , my DRV 8332 and my kit mcu were broken ,so I must buy new one.

I used your datasheet to my project, PVDD= 24V

frequency =20 khz

when I didn't connect my KIT MCU with drv 8332 I measured pin Reset A and C , it is 5V

reset B =0V

Is it correct ??

Thank for your help

over 9 years ago

0 Rick Duncan over 9 years ago

TI__Guru** 114905 points

Hi Vu,

Can you provide more information?
How fast are you changing your PWM?
Does the 12V supply for GVDD and VDD meet the recommendations of section 9.2.1.2.2 of the datasheet?
Can you provide a schematic of the DRV8332 board?

0 vu thang over 9 years ago in reply to Rick Duncan

Intellectual 390 points

I change PWM every 1ms (controler PID )
I use Lm7812 power supply to GVDD and VDD
and the schematic I used figure 8 in page 18
and I use osciloscope and I see when I use DRV 8332 my logic is noise
thank for your help

0 Rick Duncan over 9 years ago in reply to vu thang

TI__Guru** 114905 points

Hi Vu,

Can you provide more details?
Do you know what is broken when you perform a fast PWM change?
Can you provide a scope capture of the logic signals?
Can you provide a scope capture of the PVDD, GVDD, and VDD with no load connected?

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