QM48T14120-NDB0G POWER ONE, QM48T14120-NDB0G Datasheet - Page 15

• Manufacturer Part Number: QM48T14120-NDB0G
• Description: DC/DC Converters & Regulators
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of QM48T14120-NDB0G

• Output Power: 168W
• Output Current: 14A
• Input Voltage: 48V
• Output Voltage: 12V
• Screening Level: Industrial
• Product Length (mm): 36.83mm
• Product Height (mm): 7.08mm
• Product Depth (mm): 58.42mm
• Mounting Style: Through Hole
• Pin Count: 8
• Number Of Outputs: 1
• Package / Case: Quarter-Brick
• Product: Isolated
• Input Voltage Range: 36 V to 75 V
• Input Voltage (nominal): 48 V
• Output Voltage (channel 1): 12 V
• Output Current (channel 1): 14 A
• Isolation Voltage: 2000 V
• Package / Case Size: Quarter Brick
• Lead Free Status / RoHS Status: Compliant
• Lead Free Status / RoHS Status: Compliant

QM48T/S14120-wxyP (Parallelable version)
Fig. 9: Output voltage response to load current step-
change (3.5 A – 7 A – 3.5 A) at Vin = 56 V. Top trace: output
voltage (200 mV/div.). Bottom trace: load current (2 A/div).
Bottom trace: load current (5 A/div.). Current slew rate:
5 A/µs. Co = 1 µF ceramic. Time scale: 0.5 ms/div.
Fig. 11: Step Load response to 0% – 50% – 0% with 20 µF
external ceramic capacitor and di/dt = 10 A/µs. Top trace:
output voltage (500 mV/div.). Bottom trace: load current
(5 A/div). Time scale: 0.5 ms/div.
ZD-00376 Rev. 1.1.1, 19-Feb-10
QM48T/S14120 DC-DC Converter Data Sheet
Page 15 of 20
36-75 VDC Input; 12 VDC @ 14 A Output
Fig. 10: Output voltage response to load current step-
change (3.5 A – 11 A – 3.5 A) at Vin = 56 V. Top trace:
output voltage (200 mV/div.). Bottom trace: load current
(5 A/div). Current slew rate: 1 A/µs. Co = 4x150 µF tantalum
+ 1 µF ceramic. Time scale: 0.5 ms/div.
Fig. 12: Step Load response to 50% – 100% – 50% with
20 µF external ceramic capacitor and di/dt = 10 A/µs. Top
trace: output voltage (500 mV/div.). Bottom trace: load
current (5 A/div). Time scale: 0.2 ms/div.
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