HBC48T25120 Datasheet, PDF (12/16 Pages) Power-One – HBC48T25120 DC-DC Converter Data Sheet

Dynamic Load Response
HBC48T25120 DC-DC Converter Data Sheet
36-75 VDC Input; 12 VDC @ 25 A Output
Fig. 9: Output voltage response to load current
stepchange (12.5 A – 18.75 A – 12.5 A) at Vin = 48
V. Top trace: output voltage (20 mV/div.). Bottom
trace: load current (10 A/div.). Current slew rate: 0.1
A/µs. Co = 10uF Tantalum + 1 µF ceramic. Time
scale: 0.2 ms/div.
Fig. 10: Output voltage response to load current
stepchange (12.5 A – 18.75 A – 12.5 A) at Vin = 48
V. Top trace: output voltage (20 mV/div.). Bottom
trace: load current (10 A/div.). Current slew rate: 1
A/µs. Co = 15,000 uF OSCON + 1 µF ceramic. Time
scale: 0.2 ms/div.
Output Ripple
Module
Fig. 11: Output voltage ripple (20 mV/div.) at full
rated load current into a resistive load with Co = 10
µF tantalum + 1 µF ceramic and Vin = 48 V. Time
scale: 1 µs/div.
Fig. 12: Test setup for measuring input reflected
ripple currents, ic and is.
MCD10127 Rev. 1.1, 09-Jun-10
Page 12 of 16
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