DRV5053: 我們在開發IQA inspection 檢測 和tester, 想清楚用什麼標準 coil, waveform和距離來測試. 謝謝.

Hi TI team，

客户在開發IQA inspection 檢測 和tester, 选用DRV5053VAQDBZR方案，想清楚用什麼標準 coil, waveform和距離來測試.  謝謝.

Amy Luo：

您好，

DRV5053是用来测磁场的，根据施加的磁通密度线性输出模拟电压。客户具体要测什么参数?

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Stephen Yiu：

In the component spec., I see the application curve.  What's the coil to be used for test or IQA inspection?  Thanks

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Amy Luo：

Hi Stephen,

Could you please attach a screenshot of the application curve you mentioned above? I don't see where the coil is used. 

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Stephen Yiu：

I can't attached pictures.  Please refer to 8.2.1.3 Application Curve in the spec.

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Amy Luo：

Magnet selection will depend on the sensitivity selected and mechanical placement requirements for the magnet. Please refer to the implementation guide at the following link.

Linear Hall Effect Sensor Angle Measurement Theory, Implementation, and Calibration

Also, at the link below is a calculator which will help calculate expected output range based on the applied magnetic field strength.

DRV5053 Calculator

There are tools available online such as FEMM (Finite Element Method Magnetics) which can help simulate magnetic field strength of a magnet.  This will help determine the magnetic field of various magnet types at fixed distances.  This can then be used in the previously mentioned calculator to determine total expected output range for each sensitivity option.

FEMM