Hi, I have unique design requirement where I have two separate motor outputs which I need to connect to one motor. Each motor output from the motor driver is for a brushed motor which output 0-8VDC sourced from a small 2 cell lipo battery. I would like to use one motor output for forward motor direction then use the second motor output for reverse by swapping the polarity to the motor.
The motor at full power use ~1A. Only one motor will be on at a time. Plugging this in directly will just short the first motor output on the second motor output. I determined I need to disconnect one of the motor outputs which it is not in use to keep it from shorting.
I have tired various configurations to protect from the short. First I tried diodes, it allowed the motor to barely spin both directions but when they where on the diodes were nearly smoking and the current was 5A. Then I tired MOSFETs, both P and N channel which worked with out with one of the motor outputs connected but when I put it all together I had the same smoking results as the diodes.
The design requirement limits me to change the wires running from the motor control outputs, so I can't run a separate power line and PWM control. I have to use the two variable voltages outputs and then only add a circuit at the motor end to get forward and reserve direction.
Any suggestions would be helpful! Thanks in advance
The motor at full power use ~1A. Only one motor will be on at a time. Plugging this in directly will just short the first motor output on the second motor output. I determined I need to disconnect one of the motor outputs which it is not in use to keep it from shorting.
I have tired various configurations to protect from the short. First I tried diodes, it allowed the motor to barely spin both directions but when they where on the diodes were nearly smoking and the current was 5A. Then I tired MOSFETs, both P and N channel which worked with out with one of the motor outputs connected but when I put it all together I had the same smoking results as the diodes.
The design requirement limits me to change the wires running from the motor control outputs, so I can't run a separate power line and PWM control. I have to use the two variable voltages outputs and then only add a circuit at the motor end to get forward and reserve direction.
Any suggestions would be helpful! Thanks in advance