EPR-86 Datasheet, PDF (21/28 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 86 - 6.6 W Multi-Class Powered Device (PD) for Power over Ethernet (PoE) Using DPA-Switch-(DPA423G)

13-Apr-2006
EP-86 – 6.6 W, 3.3 V, 2 A PoE Powered Device
10.3 Load Transient Response (75% to 100% Load Step)
In the figures shown below, signal averaging was used to better enable viewing of the
load transient response. The oscilloscope was triggered using the load current
step as a trigger source. Since the output switching is random with respect
to the load transient, contributions to the output ripple from these sources will
average out, leaving the contribution only from the load step response.
Figure 20 – Transient Response,
36 VDC, 75-100-75% Load Step.
Upper: Load Current, 1 A / div.
Lower: Output Voltage,
20 mV, 500 µs / div.
Figure 21 – Transient Response,
57 VDC, 75-100-75% Load Step.
Upper: Load Current, 1 A / div.
Lower: Output Voltage,
20 mV, 500 µs / div.
Page 21 of 28
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