Milan,
i open another quetion.
As you said i made a circuit as below. is it the circuit you think is good?
1. As you said, we need to step down the voltage to 3.3V, do you have any suggestion circuit to step down this voltage? Can I use 10KΩ and 30kΩ to divide 5V to get about 3.7V and inject to SPEED pin ?
Actually, I worry about the R1, R2 and C1 resonant. Is it ok?
2. i know there is no relationshop between DRV10975 and DRV11873. i just curious with the number. as you said the number is TI reference number. Do you have any good explain i can give my customer ? i mean my customer want to know how to decide the number. please help me with the number's meaning?
3. “if PWM frequency is <1kHZ and >100kHz, the device performance is not guaranteed”, Can I ask you about the reason ? why this phenomenon is happen ? is it because of the IC internal clock ?
4 “100% duty cycle means DC input, device will take it as 100% duty to drive PWM at phase voltages.” If duty is 100%, what will happen ? motor will spinning in maximum speed ?