Part Number: DRV11873
Hello,
I have my DRV11873 and additional components. I have found DRV11873 PCB Layout on the driver's datasheet.
I need to print it to make the PCB board ready to soldiering. How will I be able to find the exact 1:1 scale of…
Part Number: DRV11873 Dear all
When I debug the DRV11873 device, I find the current waveform of Y/V/W pins are below picture, the effective value are different, I want to know they are normal ?
Part Number: DRV11873 Dear all
1. I find the DRV11873 device must be started at high signal on the PWM pin, after 1~2 seconds time, the DRV11873 device can be controlled by PWM signal with 20% ~100% duty, otherwise can not be controlled.
I want to…
Part Number: DRV11873 Other Parts Discussed in Thread: DRV10975 Dear all, I have this hobby motor A10-7L with following specs:
Powerange
max. 75W (15 sec.)
Idle Current @ 8,4V
1,1A
Resistance (Ri)
0,11 Ohm
RPM/Volt (kv)
2200 U/min-1
Wei…
Part Number: DRV11873 Dear all
I have some questions about this device, please help me to check them,thanks a lot.
1. What is the working principle of DRV11873 device ? How to drive fan by this device ?
2. How to achieve closed-loop control ?
3.…
Part Number: DRV11873 Dear all
I have two quesitons about Closed Loop Control function:
1. Closed Loop Control is used for control speed by limit current ?
2. How to realize closed loop control ? could you please me to describe the theory ? Thanks…
Part Number: DRV11873 Dear all,
Our customer met a question as following:
The DRV11873 has a small probability of not starting the brushless motor. If it is not re-powered, the motor will not start. At this time, the RD pin is pulled high, the FG pin…
Part Number: DRV11873 Hi There,
Further to the topic discussed in this thread, I have not been able to go around the false lock problem. Therefore, we’re sticking to a lower speed of 14,000 rpm for now.
During subsequent testing, I’ve had many failures…
Part Number: DRV11873 Other Parts Discussed in Thread: TPS25910 Hello TI
I was wondering if there could be any anomalies on the supply voltage side (Vcc) that might break the DRV11873's sensorless commutation logic where it could cause a cross conduction…
Part Number: DRV11873 Hello!
I have a problem with the DRV11873 brushless motor driver. I connected a harddrive motor with 4 leads, com, 3 coils with 1.5 Ohms. The circuit is taken out of the datasheet with an LED on the RD (lock) pin. For PWM there is…