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B048K120T10 Datasheet, PDF (13/16 Pages) Vicor Corporation – VI Chip - BCM Bus Converter Module | |||
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Application Note (continued)
PRELIMINARY
Vâ¢I Chip BUS CONVERTER LEVEL 1 DC BEHAVIORAL MODEL for 48V to 12V, 100W
IOUT
ROUT
+
32 mâ¦
+
1/4 ⢠Iout
Vâ¢I
++
1/4 ⢠Vin
VIN
IQ
52 mA
ââ
K
-
VOUT
â
©
Figure 28âThis model characterizes the DC operation of the Vâ¢I Chip bus converter, including the converter transfer function
and its losses. The model enables estimates or simulations of output voltage as a function of input voltage and output load, as
well as total converter power dissipation or heat generation.
Vâ¢I Chip BUS CONVERTER LEVEL 2 TRANSIENT BEHAVIORAL MODEL for 48V to 12V, 100W
L IN = 20 nH
+
CIN
VIN
RCIN
2.0 mâ¦
2 µF
IQ
52 mA
â
1/4 ⢠Iout
IOUT
8.5 nH
Vâ¢I
++
ââ
K
40 mâ¦
1/4 ⢠Vin
ROUT
32 mâ¦
COUT
LOUT = 1.6 nH
+
RCOUT
0.5 mâ¦
7 µF
VOUT
â
©
Figure 29âThis model characterizes the AC operation of the Vâ¢I Chip bus converter including response to output load or input
voltage transients or steady state modulations. The model enables estimates or simulations of input and output voltages under
transient conditions, including response to a stepped load with or without external filtering elements.
45 Vicor Corporation
Tel: 800-735-6200
vicorpower.com
Vâ¢I Chip Bus Converter
B048K120T10
Rev. 1.2
Page 13 of 16
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