Dynamic resistance and how to measure it

AN4022

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DocID022589 Rev 2

Figure 7. Test board

The circuit can drive current from 500 mA up to 50 A, allowing measurements beyond the

device under test is 20 A to 62 A, between the first spike up to 60 ns. (Figure 8)

increase step by step, and at each level, the voltage is measured. Typical results up to

IPP = 62.3 A

IPP = 19.2 A

IPP = 33.1 A