Datasheet

t - Time - 2 ! s/div.
t - Time - 2 ! s/div.
0.01 100
f - Frequency - kHz
-100
-40
0
100
Gain - bB
POWER LOSS
vs
LOAD CURRENT
60
-80
0.1 101.0
80
Phase - Degrees
-225
-90
0
90
-180
20
40
-20
-60 -135
-45
45
225
135
180
Phase
Gain
t - Time - 2 ! s/div.
www.ti.com Power Up/Down Test Procedures
Figure 7. Figure 8. 500 mV/div., 1.3 V Peak-to-Peak
Figure 9. 50 mV/div., 38.8 V Peak-to-Peak Figure 10. 50 mV/div., 23 mV Peak-to-Peak
11
SLUU407A–June 2010–Revised May 2013 48-V to 3.3-V Forward Converter With Active-Clamp Reset Using the
UCC2891 Active-Clamp Current-Mode PWM Controller
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