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VTM 48 FH 060 x 020A00
5.0 APPLICATION CHARACTERISTICS
The following values, typical of an application environment, are collected at T C = 25oC unless otherwise noted. See associated figures
for general trend data.
ATTRIBUTE
No load power dissipation
Efficiency (ambient)
Efficiency (hot)
Output resistance (ambient)
Output resistance (hot)
Output resistance (cold)
Output voltage ripple
V OUT Transient (positive)
V OUT Transient (negative)
SYMBOL
P NL
η AMB
η HOT
R OUT _ AMB
R OUT _ HOT
R OUT _ COLD
V OUT _ PP
V OUT _ TRAN +
V OUT _ TRAN -
CONDITIONS / NOTES
V IN = 40 V
V IN = 40 V, I OUT = 20 A
V IN = 40 V, I OUT = 20 A, T C = 100oC
V IN = 40 V, I OUT = 20 A
V IN = 40 V, I OUT = 20 A, T C = 100oC
V IN = 40 V, I OUT = 20 A, T C = -40oC
C OUT = 0 F, I OUT = 20 A, V IN = 42.4 V,
20 MHz BW, Section 12
I OUT _ STEP = 0 A TO 20A, V IN = 42.4 V,
I SLEW > 10 A /us
I OUT _ STEP = 20 A to 0 A, V IN = 42.4 V
I SLEW > 10 A /us
TYP
2.0
92.7
91.5
13.1
15.7
10.7
253
200
200
UNIT
W
%
%
m Ω
m Ω
m Ω
mV
mV
mV
3.5
3
2.5
2
1.5
1
No Load Power Dissipation vs. Line
Full Load Efficiency vs. Case Temperature
96
94
92
90
88
86
26
28
31
33
36
38
41
43
46
48
-40
-20
0
20
40
60
80
100
Input Voltage (V)
Case Temperature (°C)
T CASE :
-40°C
25°C
100°C
V IN :
26 V
40 V
48 V
Figure 1 — No load power dissipation vs. V IN
Efficiency & Power Dissipation -40°C Case
Figure 2 — Full load efficiency vs. temperature
Efficiency & Power Dissipation 25°C Case
96
14
96
14
92
88
84
80
76
72
68
η
P D
12
10
8
6
4
2
0
92
88
84
80
76
72
68
η
P D
12
10
8
6
4
2
0
0
2
4
6
8
10
12
14
16
18
20
0
2
4
6
8
10
12
14
16
18
20
Output Current (A)
Output Current (A)
V IN :
26 V
40 V
48 V
26 V
40 V
48 V
V IN :
26 V
40 V
48 V
26 V
40 V
48 V
Figure 3 — Efficiency and power dissipation at –40°C
Figure 4 — Efficiency and power dissipation at 25°C
Rev. 2.3
V?I CHIP CORP. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200
5/2011
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