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What is a Transient Response Test and what is required to run one?

A Transient Response Test (AKA: Dynamic Load Test) determines how quickly a voltage regulator can respond to a sudden change in Current.  The electronic loads must be programmable to handle the following settings.

Current setting 1 (L1) and Current setting 2 (L2), dwell time (t1 and t2) at each current or duty cycle (DC%), Slew rate for Rising (SR1) and falling edges (SR2).

The below example is for a DC-DC converter rated for 3.3V and 12Amps the Dynamic load is set for 10% to 90% of the maximum rated current for the voltage regulator.

Graph displaying transient time test

The Chroma 63600 DC Electronic Loads have the Dynamic Load programmability up to frequencies of 20KHz and have the added feature to do Sweep Dynamic Loading which adds the ability to sweep the frequency while running the Transient Load Test.


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