Part Number:DRV8704
Hello.
I have an issue with DRV8704. I designed my PCB. I made all the connections as per suggested in the DRV8704 technical document
VM = 12.6V
FET = IRF3205
Motor = Tamiya 540 with 75:1 gearbox
Current Without Load = 1.2A
Maximum Torque = 12kg・cm (6.32A/185rpm)
The problem is the starting speed and torque are too low, the motor is not working with its full power, and just giving a little pressure makes it stop and transistor gets warmer.
Also its not working fine with parallel transistors, and now i'm using one H-Bridge.
I think its because of my configurations of DRV8704. Here is my configurations and schematic
CTRL REGISTER: DTIME = 00, ISGAIN = 11, ENBL = 1
TORQUE Register: 0xFF
OFF register: TOFF = 0x00
BLANK register: TBLANK = 0x00
DECAY register: DECMOD = 101
DRIVE register: IDRIVEP = 0x00, IDRIVEN = 0x00, TDRIVEP = 0x00, TDRIVEN = 0x00, OCPDEG = 0x11, OCPTH = 0x11
What should i do? Help me please