• Configure e-load to switch between 0 A and 3 A at a rate of 1 A/μs.
• On the oscilloscope, display CH2 (VOUT) [AC coupled, 50 mV/div] and CH3 (Output Current Probe) [1 A/div, trigger rising edge ≈ 120 mA] with 20 μs/div.

Figure 4-4 shows the response to this load step to be about 50mV, or 2%.

Figure 4-4 Transient Response to Load Step 0 A to 3 A at 1 A/μs

• Change the trigger on CH3 to falling edge to capture the transient response of VOUT to negative current step from 3 A to 0 A as shown in Figure 4-5.

  Again, transient deviation is approximately 50 mV, ignoring peak envelope, or 2%.

Figure 4-5 Transient Response to Load Step 3 A to 0 A at 1 A/μs