EPR-00011 - 70 W adapter 08-Dec-00
Page 29 of 46
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10.7 Load Transient response (0 to 50% load change)
The 0 to 50% load variation shows no appreciable degradation in ripple response due to
operation at a lower switching frequency at zero load (see bode response plots also).
The waveforms were captured using a Lecroy oscilloscope. Upper trace is V
OUT_AC,
the
output voltage AC coupled, 200 mV/div. Timebase is 5 ms/div.
10.7.1 0 to 50% load change, 85 V
AC
Figure 28 - Transient Response 85 V
AC
50 Hz, I
OUT
: 0 A to 1.83 A
V
OUT
(200 mV, 5ms/div)
10.7.2 0 to 50% load change, 130 V
AC
Figure 29 - Transient Response 130 V
AC
50 Hz, I
OUT
: 0 A to 1.83 A
V
OUT
(200 mV, 5ms/div)
V
OUT_AC
1.8 V
pk-pk
1.5 V
pk-pk
