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HKS48T30120 DC-DC Series Data Sheet
Half-Brick with 48VDC Input; 12VDC @ 32A Output
Dynamic Response
Figure 5. Turn-On Characteristics @ Power-up (typ)
Conditions: Vin max., Cext = 220μF
Output current: 0 ADC
Channel 1 - Input voltage: 48 VDC
Scale : 20V/div., 5ms/div.
Channel 2 - Output voltage
Time base = 5ms/div.
Vo Turn-on Characteristics (as a function of On/Off)
Figure 7. Dynamic Load Response (typ)
Conditions: Vin nominal, Cext = 220 μF
The load is switched from 16 A to 24 A
(25% load ? ) with a slew rate of di/dt=1.0A/ μ s
Channel 1 - Voltage deviation: ~ +/-400mV (measured)
Scale : 200mV/div, 200μs/div.
Output Ripple and Noise
Figure 6. Turn-On Characteristics via On/Off Ctrl (typ)
(Negative logic On/Off shown)
Conditions: Vin nominal, Cext = 220μF
Output current: 32 ADC
Channel 1 - On/Off signal
Scale : 5V/div.
Channel 2 - Output voltage
Amplitude = 2V/div.
Time base = 5ms/div.
The output voltage begins to rise approximately 1 to
2 ms after the converter is enabled by the ON/OFF
signal.
Figure 8. Output Ripple & Noise (typ)
Conditions: Vin = 48V and Iout = 32 A.
Channel 1 - Vo, (AC coupled), 166mV P-P or 51mV RMS
Scale : 50mV/div.
FEB 14, 2006 revised to MAY 17, 2006
Page 7 of 14
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