Other Parts Discussed in Thread: LM5177, LM5170, LM5122
Quick question for you regarding the LM5123 . I want to use that chip as a boost controller to power up a 24V motor from a 12V battery. Regarding this part of the logic, so far so good
The thing is the following :my motor can sometimes gain energy. I want to send back this energy to my battery. I don't need to change the voltage or anything of that energy, I can send it directly to the battery it can handle it.
The behavior of the circuit would be the following : the motor gains energy, the voltage at the ouput of the boost thus increase. The LM5123 will then see that the voltage at the output is greater than the 24V. I then expect it to reduce the duty cycle of the high-side PWM. By extension I also expect the duty cycle of the low-side PWM to rise as it behaves the oppsite way of the PWM of the high-side.
The low-side mosfet would then be fully closed(full conduction mode) because it's PWM is greater. This mosfet would allow currents to flow from the output to the input. My battery will then recharge a little bit and when the energy at the motor is dissipated the output votlage will fall, the LM5123 will detect that and the compensator will then start to increase the PMW of the high-side and I would go back to normal behavior.
My question is the following : will the LM5123 behave as I think it will ? Does this chip have any ''problems'' with seeing reverse current ?
Thanks a lot guys,