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I2C chip that could control through PWM a heating element at 12V.

Gerald
Genius 9570 points
Other Parts Discussed in Thread: DRV8847, DRV8847SEVM

Hi Team,

May I ask for help? My customer is looking for an I2C chip.

He said:
"I am designing medical equipment, we need an I2C chip that could control through PWM a heating element at 12V. We saw the DRV catalog but we were wondering if you could help us choosing one of them

we are working in a covid sensor that needs to heat the samples at 65 degrees Celsius. we are using a kapton heating element that takes around 1 ampere

this is the schematic from the old prototype
gitlab.com/.../heater_led_tempSensor_board.pdf

it was controlled by a mosfet but now we want to move everything to i2c"

I hope you can help us.

Thank you so much.

Gerald

  • 0
    TI__Mastermind 37683 points

    Hi Gerald,

    Thank you for posting to the E2E forum.

    This is a very interesting project! The only I2C driver we have that meets your applications current and voltage requirements is the DRV8847 which is an integrated dual H-bridge driver. This driver has a maximum operating voltage of 18V and can source up to 2-A RMS current when the outputs are parallel.

    Let me know if you have any questions about this part. If you are interested in evaluating this part, you can get the DRV8847SEVM.