Other Parts Discussed in Thread: DRV8305, DRV8305-Q1, LAUNCHXL-F280049C
1. I had generating six PWM signals independently (switching acording to hall sensor data) with Launchxl F280379D EVM. This isx PWM signals are connected to
PWMGPIO0 to INH_A,PWMGPIO1 to INL_A, PWMGPIO2 to INH_B,PWMGPIO3 to INL_B, PWMGPIO4 to INH_C,PWMGPIO5 to INL_C
3.3V (from to Launchxl F280379D EVM) to EN_Gate .(ground is connected between Launchxl F280379D EVM and driver card)
2. Sometimes BLDC motor is running continuously with same speed even though nfault led is glowing , but when speed is changing through duty cycle (UART-Terminal using in CCS for updating user duty cycle) sometime driver card DRV8305 generating the PWM sognal to mosfet , but some time it wont genrate pwm ( F280379D EVM is generating always). i probed and verified this above things.
3. one more observation i found that when 12V( feeding to DRV8305 with inturn feed to mosfets fro BLDC motor) is switch on /off several time, it is running (this time also nfault led is glowing)
4. it seems to be DRV8305 EVM, some fault is generting bcoz of that only, it wont generationg pwm signal to mosfet.
Please guide us how to overcome this hardware issue