EPR-000013 Datasheet, PDF (28/56 Pages) Power Integrations, Inc. – Engineering Prototype Report (EP13) 43 W / 57 W pk, 5 Output TOPSwitch팜-GX (TOP246Y) Power Supply

EPR-000013 – 43 W Multiple Output TOP246 Power Supply
08-May-2001
11.4 Load Transient Response (75% to 100% Load Step)
In the figures shown below, signal averaging was used to better enable viewing the load
transient response. The oscilloscope was triggered using the load current step as a
trigger source. Since the output switching and line frequency occur essentially at 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 22 - 5 V and 3.3 V Transient Response.
75-100-75% Load Step 5 V output.
Upper: 5 V, 100 mV / div.
Middle: 3.3 V, 100 mV / div.
Bottom: 5 V output current, 1 A / div.
500 µs / div.
Figure 23 - 12, 18 and 30 V Transient Response.
75-100-75% Load Step 5 V output.
Upper: 30 V, 200 mV / div.
Middle1: 18 V, 200 mV / div.
Middle2: 12 V, 200 mV / div.
Bottom: 5 V output current, 1 A / div.
2 ms / div.
Power Integrations, Inc.
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www.powerint.com
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