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Required IC or driver to drive https://www.omega.com/en-us/industrial-heaters/surface-heaters/flexible-heaters/khra-khlva-kha-series/p/KHLVA-101-5-P part

pooja ak
Prodigy 210 points
Other Parts Discussed in Thread: DRV8231A, DRV8962

Dear Team,

We are designing a custom carrier with the help of IMX8 som.

Now we are in the stage of component selection to our new project .this board will use in medical (LAB)

and we are looking IC which need to drive the below shared link (part)

https://www.omega.com/en-us/industrial-heaters/surface-heaters/flexible-heaters/khra-khlva-kha-series/p/KHLVA-101-5-P
IC requirements are 

1 Drivers shall be developed to provide PWM output at 24V DC (~4W) to heater film

                On PID constants

2 Driver should have software control to alter P, I, and D constants and set points.

3 Circuit switching shall be non-mechanical to prevent added vibration (SSR or similar)

4 driver shall also have control over duty cycle used for output calculation .

Requesting a IC which needs to drive the https://www.omega.com/en-us/industrial-heaters/surface-heaters/flexible-heaters/khra-khlva-kha-series/p/KHLVA-101-5-P part

Thanks,

Pooja Ak

Thanks,

Pooja Ak

  • 0
    TI__Mastermind 37683 points

    Hi Pooja,

    pooja ak said:
    4 driver shall also have control over duty cycle used for output calculation .

    Typically, in most of our motor drivers, the output duty cycle will follow the input control duty cycle. The exception is when the device is in current regulation mode or other protection mode, the duty cycle will be adjusted by the driver. Do you wish the motor driver to be able to adjust the output duty cycle in order to keep the average voltage or current constant? 

    pooja ak said:

    1 Drivers shall be developed to provide PWM output at 24V DC (~4W) to heater film

                    On PID constants

    2 Driver should have software control to alter P, I, and D constants and set points.

    Our current driver portfolio do not have integrated PID controllers. A PID controller will have to be implemented external to the motor driver. 

    Further questions:

    1. At 24 V, what is the average current you expect the heater film to consume?

    Regards,

    Pablo Armet

  • 0 in reply to Pablo Armet
    Prodigy 210 points

    Dear Pablo Armet

    Thanks for the information

    Typically, in most of our motor drivers, the output duty cycle will follow the input control duty cycle. The exception is when the device is in current regulation mode or other protection mode, the duty cycle will be adjusted by the driver. Do you wish the motor driver to be able to adjust the output duty cycle in order to keep the average voltage or current constant? 

    Pooja yes

    Our current driver portfolio do not have integrated PID controllers. A PID controller will have to be implemented external to the motor driver. 

    Understood! please suggest an additional PID control .

    1. At 24 V, what is the average current you expect the heater film to consume?

    Current approximately 0.248A .

    Thanks,

    Pooja Ak 

  • 0 in reply to pooja ak
    TI__Mastermind 37683 points

    Pooja,

    Based on your requirements, the DRV8231A is a good option. It does come with current regulation and overcurrent protection. 

    pooja ak said:
    Understood! please suggest an additional PID control .

    I can't really recommend a PID loop as that is not my area of expertise. I suggest posting another thread to the MSP (MCU) team for recommendations.

    Regards,

    Pablo Armet

  • 0 in reply to Pablo Armet
    Prodigy 210 points

    Hi ,

    Please don't close this issue,iam working on this.


    Thanks,

    Pooja Ak

  • 0 in reply to pooja ak
    TI__Mastermind 37683 points

    Hi Pooja,

    any updates?

    Regards,

    Pablo Armet

  • 0 in reply to Pablo Armet
    Prodigy 210 points

    Hey Pablo ,

    We found DRV8962 IC for our application and we started to validate .

    Thanks for the support !

    You can close this issue .

    Thanks,

    Pooja Ak