SLYU055A January   2020  – November 2020 TMAG5124

 

  1. 1Trademarks
  2. 2Overview
    1. 2.1 TMAG5124EVM Kit Contents
    2. 2.2 Related Documentation From Texas Instruments
  3. 3Hardware
    1. 3.1 Features
  4. 4Quick Start
    1. 4.1 Option 1: Single 5-V Supply
    2. 4.2 Option 2: Separate VCC and 5-V Supply
    3. 4.3 Measurements
    4. 4.4 Standalone Measurements
  5. 5Circuitry
    1. 5.1 TMAG5124 Coupon Boards
    2. 5.2 Logic, Feedback, and Display
    3. 5.3 J5
  6. 6Schematic, PCB Layout, and Bill of Materials
    1. 6.1 Schematic
    2. 6.2 PCB Layout
    3. 6.3 Bill of Materials
  7. 7Revision History

4.3 Measurements

Note:

While TMAG5124 is capable of handling a VCC maximum of 38 V, the INA303-Q1 common mode voltage range may not exceed 36 V to maintain linear operation. TI does not recommend using the control board to evaluate the device inside the 36 V to 38 V range. Testing at this range does not cause damage to either device, but the response from INA303 is not within data sheet specifications.

The TMAG5124EVM enables the user to test the functionality of the TMAG5124 Hall-effect sensor using the onboard hardware or external hardware, which must first be set up as described in Section 4. Then, perform the following:

  1. Trigger the TMAG5124 device output: Lower the north pole of the included magnet directly over the TMAG5124 Hall-effect sensor.
  2. Observe the operating point: At the point the magnet crosses the BOP threshold, the "ON" LED (D1) turns on, and the "OFF" LED (D2) turns off.
  3. Observe the release point: Removing the magnet beyond the release point (BRP), the "ON" LED (D1) turns off, and the "OFF" LED (D2) turns on.
  4. Observe the ALERT state: Ensure all power supplies are off. Unplug "VCC_OUT" from the control board or the coupon board under test, which "breaks" the loop. Re-energize the power supplies. When the device is not capable of passing current, the control board "ALERT" diode (D3) turns on in place of the "OFF" or "ON" signals.