Datasheet

t - Time - 400 m s/div.
t - Time - 1 ! s/div.
t - Time - 1 ms/div.
t - Time - 1 ms/div.
Power Up/Down Test Procedures www.ti.com
Figure 11. V
IN
= 36 V Figure 12. V
IN
= 75 V
Figure 13. Startup at V
IN
= 36 V, I
OUT
= 30 A Figure 14. Transient Testing at V
IN
= 48 V, I
OUT
= 10 A -
15 A - 10 A
12
48-V to 3.3-V Forward Converter With Active-Clamp Reset Using the SLUU407A–June 2010–Revised May 2013
UCC2891 Active-Clamp Current-Mode PWM Controller
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