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VCN60/70 Series
High Ef?ciency, High Current Density, 60 or 70 Amp
Single Inline Package DC/DC Converters
GENERAL CHARACTERISTICS
Parameter
Enable input
Conditions
LOW = disable
HIGH = enable
MIN.
1.7
TYP.
MAX.
0.8
6.0
Units
LOW = fault (Imax = 4mA)
0.4
Vdc
Power good input
HIGH = good (open drain with
ESD clamp)
5.3
Storage temperature
Operating temperature
Material ?ammability
MTBF
UL 94V-0
Calculated (RAC PRISM 4 @
40oC 1.8V @ 50A)
–40
0
4.3
70
70
oC
x10 6 Hrs
Switching frequency
Dimensions 5
Per phase 450
VCN60 2.4"L x 0.375"W x 1.25"H (60.96 mm x 9.525 mm x 31.75 mm)
VCN70 2.4"L x 0.660"W x 1.25"H (60.96 mm x 16.764 mm x 31.75 mm)
KHz
4
5
PRISM is a standard for MTBF prediction and system reliability analysis, originally developed by the Reliability Analysis Center (RAC).
Width is a maximum dimension.
PROTECTION CHARACTERISTICS
Parameter Conditions
Output current limit
Hiccup mode
Overvoltage shutdown
Latching
Input fusing
MIN.
TYP.
95
116
20
MAX.
Units
A
%V NOM
A
NOTES
V IN = 12Vdc, T A = 25°C, Air?ow = 400LFM unless otherwise noted. Speci?cations subject to change without notice.
OUTPUT VOLTAGE SETPOINT ADJUSTMENT
The following relationship establishes the calculation of external resistors:
R ADJ (kΩ) =
1.2
(V OUT ? 0.6)
For V OUT setting an external resistor is connected between the R TRIM pin and – Sense pin.
Typical Efficiency Curve (12V IN , 25?C)
95
90
3.3V
85
80
2.5V
1.8V
1.5V
1.2V
1.0V
0.6V
75
70
5
15
25
35
45
55
65
75
Load Current (Amps)
www.murata-ps.com/support
MDC_VCN60/70 Series.B09 Page 2 of 7
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