Other Parts Discussed in Thread: DRV8412, , TINA-TI
Hi , i'am using drv8412 reference design rev.g -> dual dc or step motor driver / below is the link
www.ti.com/.../TIDM-THREEPHASE-BSDC
When i test about this evm , i wondered about current sensing of motor
i attatch the schematic.
I know IA-FB ~ ID-FB is current feedbacks used by OPA2350EA
below, i have a some question Pleas, reply so detail as you as possible
1. How to Calculate about realtime Current?(Please example calculation Ex, Busvoltage24V and sample current 4amphear ) and what is the OPA2350 Gain? and DC Bias 2.5V voltage?
2. I dont understand R26/R54/R35/R30/R64 work? how to use that for make to gain? or DC Bias? did it work inverting amp? calculate please(i think that chips operate as Low side motor current sensig)
I don't good at making english sentences , please Reply THankyou!