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DRV5032: Best option for power consumption

Trung Nguyen90
Prodigy 20 points
Part Number: DRV5032

Hi,

I'm building a product which require low power consumption.

Since I see many version of DRV5032 make me confused.

I'm using  DRV5032FCDBZR right now which detect whenever a lid is close or open.

It detects a maget closer when the lid is close and no magnet when the lid is open.

But most of the time the lid will close and it detects a magnet close will make more power consumption.

When the lid is open for few seconds and magnet move far away, I see the power drop off. 

So, how I could select a version of DRV5032 which give low power when a magnet nearby.

Thank you very much

  • 0
    TI__Genius 17990 points
    Hello,

    Thank you for choosing TI. I did a quick test in the lab with the DRV5032FB device I had on-hand. Measuring the current out of a 5V supply, I was getting 1.2uA when the magnet was far away, and 0.7uA when the magnet was close to the device. The main difference between the FB device I tested and the FC one that you have is the sampling rate and that the FB has a push-pull output type. A quick suggestion could be to try the FA version that has your same sampling rate and the push-pull output type (which does not need the pull-up resistor). However, it is unsure if this will fix your problem without having more information.

    To better help you, I have a few questions about your setup.

    1. How/where are you measuring power?
    2. What power measurements are you getting?
    3. Could you send a schematic of your design or at least let me know the supply voltages and the pull-up resistor value?
  • 0 in reply to Mitch M
    TI__Genius 17990 points
    Hello,

    We haven't heard back from you in a while, so I will assume that the above advice was able to solve your problem. If not, please respond back to this thread with any questions or concerns, or start a new thread if this one has been locked.