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LMZ22010: LMZ22010

Rozi Bachar
Prodigy 60 points
Part Number: LMZ22010

Hi,

I think of using the LMZ22010 as TEC driver( TEC is Thermoelctric Cooling).

The TEC needs up to 8A and up to 6V. If the temperture is too hot,  need to supply 6V/8A to the TEC and if it's to cold,  need to turn off the LMZ22010 or to send voltage less than 2v and so on...

Which mean the LMZ22010's output will change between 6V to 2V around 0.5HZ-1HZ(approxmatly one second ON and one second OFF).

Is this component suit to this application?

Can I use digital potentiometers for RFBT and RFBB to change the Output Voltage between 6V and 2V(or less)?

Can I stop the LMZ22010 working by support '1' (zero Hz PWM frequency) to the SYNC pin for one second and after that support external clock for the next one second and so on...?

Thank in advance 

Rozi

  • 0
    TI__Mastermind 19891 points
    Hello Rozi,

    I believe you can use the LMZ22010 for this application.
    The output capacitance should be designed for the 2V output. If the converter is stable at 2V output it will be stable at 6V as well.

    I think you should use the EN pin for shutting off the device. "Parking" the SYNC pin for a long time will not shut off the part - it will continue working using its internal oscillator. The pin description implies that you need to park the SYNC low when you are not using it.

    Let us know if you need any additional information on this.

    Cheers,
    Denislav