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HKS48T30120 DC-DC Series Data Sheet
Half-Brick with 48VDC Input; 12VDC @ 32A Output
Performance Characteristics
Reflected Ripple Current
Efficiency
100
90
80
70
60
50
36
48
75
10
20
30
40
50
60
70
80
90
100
% Load
Figure 3. Efficiency Characteristics (typ)
Figure 1. Input Reflected Ripple Current (typ)
Conditions: Output current = 32 ADC.
Input voltage = 48 VDC.
Channel 1 - Input RRC < 8mA P-P (measured)
Vo Turn-on Characteristics (as a function of Vin)
Scale : 5mA/10mV or 5mA/division.
UVLO (Undervoltage lockout)
Figure 4. Turn-On Characteristics @ Power-up (typ)
Conditions: Vin nominal, Cext = 220 μF
Output current: 32 ADC
Channel 1 - Input voltage: 48 VDC
Scale : 20V/div.
Channel 2 - Output voltage
Time base = 5ms/div.
The output voltage begins to rise approximately 1 to 2
msec after the input voltage reaches the turn-on
threshold of the input undervoltage protection circuit.
Figure 2. Undervoltage Lockout Characteristics (typ)
FEB 14, 2006 revised to MAY 17, 2006
Page 6 of 14
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