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Dual-Axis Current Control of Brushed DC Motor.pdf

Paramasivam Raghunathan
Prodigy 210 points
Other Parts Discussed in Thread: DRV8412

Hi,

I just purchased a DRV8412-C2-KIT. I was going through the pdf document for Dual-axis Current control of brushed DC motor..

Level 1C (DRV8412 Test)
After verifying PWM_MACRO module in level 1a, the dual full-bridge hardware in the DRV8412 are tested by looking at the low pass filter outputs. For this purpose, set the variable DRV_RESET to 0 through the watch window and check the ADC_Vhb1 and ADC_Vhb2 schematic nodes using an oscilloscope. You will observe that the phase voltage dividers and waveform monitoring filters (R42 to 45 & C55 to 56) enable the generation of the waveform and ensure that the DRV8412 is working appropriately.

I am unable to find these test points on the DRV8412-c2-kit.

Pls help.

Regards

Raghu.

  • 0
    TI__Guru** 119560 points

    they aren't full test points like the output pins.  take for example ADC_Vhb1. From the schematic it is the voltage across R45 to ground. R45 is just below the screw that is between OUT_A and OUT_B connectors. R43 is mirrored across for _Vhb2.