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QM48T14120-NBB0G

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
ZD-00376 Rev. 1.1.1, 19-Feb-10 Page 1 of 20 www.power-one.com
QM48T/S14120 DC-DC Converter Data Sheet
36-75 VDC Input; 12 VDC @ 14 A Output
Applications
Telecommunications
Data communications
Wireless communications
Servers, workstations
Benefits
High efficiency – no heat sink required
Higher current capability at 70
°C than many
competitors’ 12 V half-bricks
Features
RoHS lead-free solder and lead-solder-exempted
products are available
Delivers up to 14 A (168 W)
Industry-standard quarter-brick pinout
Available: through-hole and surface-mount packages
Weight: 1.1 oz [31.5 g] typical
On-board input differential LC-filter
Start-up into pre-biased load
No minimum load required
Meets Basic Insulation requirements of IEC60950
Withstands 100 V input transient for 100 ms
Fixed-frequency operation
Fully protected
Remote output sense
Fully protected with automatic recovery
Paralleling option available
Positive or negative logic ON/OFF option
Output voltage trim range: +10%/20% with
industry-standard trim equations
High reliability: MTBF approx. 2.6 million hours,
calculated per Telcordia TR-332, Method I Case 1
Safety approved to UL60950-1, CSA60950-1,
EN60950-1 and IEC60950-1.
Designed to meet Class B conducted emissions per
FCC and EN55022 when used with external filter
All materials meet UL94, V-0 flammability rating
Description
The QM48T/S14120 converter of the QM-Series provides outstanding thermal performance in high temperature
environments. This performance is accomplished through the use of patented/patent-pending circuits, packaging,
and processing techniques to achieve ultra-high efficiency, excellent thermal management, and a low-body profile.
The low-body profile and the preclusion of heat sinks minimize impedance to system airflow, thus enhancing
cooling for both upstream and downstream devices. The use of 100% automation for assembly, coupled with
advanced electronic circuits, and thermal design results in a product with extremely high reliability.
Operating from a 36-75 V input, the QM-Series converters provide outputs that can be trimmed from –20% to
+10% of the nominal output voltage, thus providing outstanding design flexibility.
The paralleling version of the QM48T/S14120-wxyP converter has the paralleling capability for use in applications
requiring higher power levels than available with a single converter.
ZD-00376 Rev. 1.1.1, 19-Feb-10 Page 2 of 20 www.power-one.com
QM48T/S14120 DC-DC Converter Data Sheet
36-75 VDC Input; 12 VDC @ 14 A Output
Electrical Specifications (Common for both Non-paralleling and Paralleling Options)
Conditions: T
A
= 25 ºC, Airflow = 300 LFM (1.5 m/s), Vi n = 48 VDC, unless otherwise specified.
Parameter Notes Min Typ Max Units
Absolute Maximum Ratings
Input Voltage Continuous 0 80 VDC
Operating Ambient Temperature -40 85 °C
Storage Temperature -55 125 °C
Isolation Characteristics
I/O Isolation 2000 VDC
Isolation Capacitance 1.2 F
Isolation Resistance 10 M
Feature Characteristics
Switching Frequency 300 kHz
Output Voltage Trim Range
1
Industry-standard equations -20 +10 %
Remote Sense Compensation
1
Percent of V
OUT
(NOM) +10 %
Output Overvoltage Protection Non-latching 115 128 135 %
Overtemperature Shutdown (PCB) Non-latching 125 °C
Auto-Restart Period Applies to all protection features 100 ms
Turn-On Time 4 ms
ON/OFF Control (Positive Logic)
Converter Off (logic low) -20 0.8 VDC
Converter On (logic high) 2.4 20 VDC
ON/OFF Control (Negative Logic)
Converter Off (logic high) 2.4 20 VDC
Converter On (logic low) -20 0.8 VDC
Input Characteristics
Operating Input Voltage Range 36 48 75 VDC
Input Under Voltage Lockout Non-latching
Turn-on Threshold 33 34 35 VDC
Turn-off Threshold 31 32 33 VDC
Input Voltage Transient 100 ms
100 VDC
Input Stand-by Current Vin = 48 V, converter disabled
3
mADC
Input No Load Current (0 load on the output) Vin = 48 V, converter enabled
65
mADC
Input Reflected-Ripple Current 25 MHz bandwidth 20 mA
PK-PK
Additional Notes:
1
Vout can be increased up to 10% via the sense leads or up to 10% via the trim function (Vin > 40 V). However, the total output voltage trim
from all sources should not exceed 10% of V
OUT
(NOM), in order to ensure specified operation of overvoltage protection circuitry.
ZD-00376 Rev. 1.1.1, 19-Feb-10 Page 3 of 20 www.power-one.com
QM48T/S14120 DC-DC Converter Data Sheet
36-75 VDC Input; 12 VDC @ 14 A Output
Electrical Specifications for Single Converter with Non-Paralleling Option
Conditions: T
A
= 25 ºC, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, unless otherwise specified.
Parameter Notes Min Typ Max Units
Maximum Input Current 14 ADC @ 36 VDC In
5.15 ADC
Output Voltage Set Point (no load) 11.88 12.00 12.12 VDC
Output Regulation Over Line
±4 ±10 mV
Output Regulation Over Load
±4 ±10 mV
Output Voltage Range Over line, load and temperature
2
11.8 12.2 VDC
Over line, load and temperature
3
11.0 12.2 VDC
Output Ripple and Noise – 25 MHz bandwidth Full load + 10 µF tantalum + 1 µF ceramic
100 140 mV
PK-PK
External Load Capacitance Plus full load (resistive)
2,200 µF
Output Current Range 0
14 ADC
Current Limit Inception Non-latching 15.0 16.0 17.0 ADC
Peak Short-Circuit Current Non-latching, Short = 10 m 19 22 A
RMS Short-Circuit Current Non-latching 3.5 Arms
Dynamic Response
Load Change 50%-75%-50%, di/dt = 0.1 A/µs Co = 100 µF POS + 1 µF ceramic
240
mV
Settling Time to 1%
50
µs
Efficiency
100% Load 92 %
50% Load 94 %
Electrical specifications for Single Converter with Paralleling Option
Conditions: T
A
= 25 ºC, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, unless otherwise specified.
Parameter Notes Min Typ Max Units
Maximum Input Current 14 ADC @ 36 VDC In
4.75 ADC
Output Voltage Set Point (no load) 12.15 12.27 12.44 VDC
Output Regulation Over Line
±4 ±10 mV
Output Regulation Over Load
0.5 0.6 V
Output Voltage Range Over line, load and temperature
2
11.5 12.5 VDC
Over line, load and temperature
3
11.0 12.5 VDC
Output Ripple and Noise – 25 MHz bandwidth Full load + 10 µF tantalum + 1 µF ceramic
100 140 mV
PK-PK
External Load Capacitance Plus full load (resistive)
2,200 µF
Output Current Range 0
14 ADC
Current Limit Inception Non-latching 15.0 16.0 17.0 ADC
Peak Short-Circuit Current Non-latching, Short = 10 m 19 22 A
RMS Short-Circuit Current Non-latching 3.5 Arms
Dynamic Response
Load Change 50%-75%-50%, di/dt = 0.1 A/µs Co = 100 µF POS + 1 µF ceramic
240
mV
Settling Time to 1%
50
µs
Efficiency
100% Load 92 %
50% Load 94 %
Additional Notes:
2
For Vin 40 V, I
O
= 14 A, -40 °C Tamb 85 °C.
3
For Vin 36 V, I
O
= 14 A, -40 °C Tamb 85 °C.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

QM48T14120-NBB0G

Mfr. #:
Buy QM48T14120-NBB0G
Manufacturer:
Bel
Description:
DC DC CONVERTER 12V
Lifecycle:
New from this manufacturer.
Delivery:
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