EMC VI-200 - Manual (Page 9)

Design Guide & Applications Manual
For VI-200 and VI-J00 Family DC-DC Converters and Configurable Power Supplies
vicorpower.com 800-735-6200 Applications Engineering 1-800-927-9474 Rev. 2.1
Page 26 of 88
9. EMC Considerations
NOTE: A low ESR capacitor should be used on the output, preferably tantalum.
3 Amp Load 15 Amp Load 30 Amp Load
+IN
–IN
+OUT
–OUT
C3a
GATE
IN
GATE
OUT
+S
TRIM
–S
C4
C2a
C1
C2b C3b
C1 = 100 µF
C2a – C2b = 4,700 pF (Vicor Part # 01000)
C3a – C3b = 0.01 µF (Vicor Part # 04872)
C4 = 270 µF (Tant.)
Conditions
Light Load = 3 A
Nominal Load = 15 A
Full Load = 30 A
Figure 9–11 — Output noise, additional output capacitance
Output Ripple vs. Load
Addition of Output Capacitor
Typical Vicor Module (VI-230-CV) 48 V Input, 5 V Output