SQM48T25025-NBB0 POWER ONE, SQM48T25025-NBB0 Datasheet

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SQM48T25025-NBB0

Manufacturer Part Number
SQM48T25025-NBB0
Description
Module DC-DC 1-OUT 2.5V 25A 62.5W 8-Pin 1/8-Brick
Manufacturer
POWER ONE
Type
Step Downr
Datasheet

Specifications of SQM48T25025-NBB0

Package
81/8-Brick
Output Current
25 A
Output Voltage
2.5 V
Input Voltage
48 V
Number Of Outputs
1
Output Power
62.5 W

Available stocks

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Part Number:
SQM48T25025-NBB0G
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The new 25A SemiQ™ Family of DC-DC converters provide
a high-efficiency single output in a size that is only 60% of
industry-standard quarter-bricks, while preserving the same
pinout and functionality.
The 25A SQM48 Series converters of the SemiQ™ Family
provide thermal performance in high temperature environ-
ments that exceeds most competitors' 25 A quarter-bricks.
This is accomplished through the use of patent pending cir-
cuit, packaging and processing techniques to achieve ultra-
high efficiency, excellent thermal management and a very
low body profile.
Low body profile and the preclusion of heatsinks minimize
airflow shadowing, thus enhancing cooling for downstream
devices. The use of 100% automation for assembly, coupled
with advanced electric and thermal design, results in a prod-
uct with extremely high reliability.
Operating from a 36-75 V input, the 25A SQM48 Series
converters provide any standard output voltage from 2.5 V
down to 1.2 V. Outputs can be trimmed from –20% to +10%
of the nominal output voltage (±10% for output voltage 1.2
V), thus providing outstanding design flexibility.
With a standard pinout and trim equations, the SQM48
Series converters are perfect drop-in replacements for exist-
ing 25 A quarter-brick designs. Inclusion of this converter in
new designs can result in significant board space and cost
savings. The device is also available in a surface mount
package.
In both cases the designer can expect reliability improve-
ment over other available converters because of the SQM48
Series’ optimized thermal efficiency.
Applications
MCD10085 Rev. 1.1, 08-Jul-10
Telecommunications
Data communications
Wireless
Servers
Page 1 of 30
SemiQ
Features
SQM48T and SQM48S Converters
RoHS lead-free solder and lead-solder-exempted
products are available
Delivers up to 25 A (62.5 W)
Industry-standard quarter-brick pinout
Extremely small footprint: 0.896” x 2.30” (2.06 in
40% smaller than conventional quarter-bricks
Higher current capability at elevated temperatures
than most competitors' 25 A quarter-bricks
On-board input differential LC-filter for the lowest input
ripple current in industry
Outputs available in 2.5, 2.0, 1.8, 1.5, and 1.2 V
High efficiency – no heatsink required
Start-up into pre-biased output
No minimum load required
Available in through-hole and SM packages
Low profile: 0.28” (7.1 mm)
Light weight: 0.66 oz (18.5 g)
Meets Basic Insulation requirements of EN60950
Withstands 100 V input transient for 100 ms
Fixed-frequency operation
Fully protected
Remote output sense
Output voltage trim range: +10%/−20% with Industry-
standard trim equations (except 1.2 V output)
High reliability: MTBF of 3.4 million hours, calculated
per Telcordia TR-332, Method I Case 1
Positive or negative logic ON/OFF option
UL 60950 recognized in US and Canada and DEMKO
certified per IEC/EN 60950 (pending)
Meets conducted emissions requirements of FCC
Class B and EN 55022 Class B with external filter
All materials meet UL94, V-0 flammability rating
TM
Family 25A DC-DC Converters
SQM48 Series Data Sheet
www.power-one.com
2
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SQM48T25025-NBB0 Summary of contents

Page 1

The new 25A SemiQ™ Family of DC-DC converters provide a high-efficiency single output in a size that is only 60% of industry-standard quarter-bricks, while preserving the same pinout and functionality. The 25A SQM48 Series converters of the SemiQ™ Family provide ...

Page 2

Electrical Specifications Conditions: T =25ºC, Airflow=300 LFM (1.5 m/s), Vin=48 Vdc, All output voltages, unless otherwise specified. A PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage Operating Ambient Temperature Storage Temperature INPUT CHARACTERISTICS Operating Input Voltage Range Input Under Voltage Lockout Turn-on ...

Page 3

Operation Input and Output Impedance These power converters have been designed to be stable with no external capacitors when used in low inductance in- put and output circuits. However, in many applications, the inductance associated with the distribution from the ...

Page 4

Output Voltage Adjust /TRIM (Pin 6) The output voltage can be adjusted up 10% or down 20% for Vout ≥ 1.5 V, and ±10% for Vout = ...

Page 5

Protection Features Input Undervoltage Lockout Input undervoltage lockout is standard with this converter. The converter will shut down when the input voltage drops below a pre-determined voltage. The input voltage must be at least 35 V for the converter to ...

Page 6

The following pages contain specific plots or waveforms as- sociated with the converter. Additional comments for specific data are provided below. Test Conditions All data presented were taken with the converter soldered to a test board, specifically a 0.060” thick ...

Page 7

Start-up Information (using negative ON/OFF) Scenario #1: Initial Start-up From Bulk Supply ON/OFF function enabled, converter started via application of V See Figure E. Time Comments t ON/OFF pin is ON; system front end power is toggled 0 on, V ...

Page 8

... Ambient Temperature [°C] Fig. 2.5V.1: Available load current vs. ambient air temperature and airflow rates for SQM48T25025 converter with D height pins mounted vertically with air flowing from pin 3 to pin 1, MOSFET temperature  120 C, Vin = 48 V. MCD10085 Rev. 1.1, 08-Jul-10 ...

Page 9

SQM48T/S25025 (2.5 Volts Out) Fig. 2.5V.3: Turn-on transient at full rated load current (resis- tive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). ...

Page 10

SQM48T/S25025 (2.5 Volts Out) Fig. 2.5V.7: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with F tantalum + 1uF ce- ramic and Vin = 48 V. Time scale: 1 s/div. Fig. ...

Page 11

SQM48T/S25025 (2.5 Volts Out) 3.0 2.5 2.0 1.5 1.0 0 Iout [Adc] Fig. 2.5V.11: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has al- most no effect on ...

Page 12

Electrical Specifications: SQM48T/S25020 (2.0 Volts Out Conditions: T =25ºC, Airflow=300 LFM (1.5 m/s), Vin=48 Vdc, Vout=2.0 Vdc unless otherwise specified. A PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input ...

Page 13

SQM48T/S25020 (2.0 Volts Out) Fig. 2.0V.3: Turn-on transient at full rated load current (resis- tive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). ...

Page 14

SQM48T/S25020 (2.0 Volts Out) Fig. 2.0V.7: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with F tantalum + 1uF ce- ramic and Vin = 48 V. Time scale: 1 s/div. Fig. ...

Page 15

SQM48T/S25020 (2.0 Volts Out) 3.0 2.5 2.0 1.5 1.0 0 Iout [Adc] Fig. 2.0V.11: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has al- most no effect on ...

Page 16

Electrical Specifications: SQM48T/S25018 (1.8 Volts Out) Conditions: T =25ºC, Airflow=300 LFM (1.5 m/s), Vin=48 Vdc, Vout=1.8 Vdc unless otherwise specified. A PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input ...

Page 17

SQM48T/S25018 (1.8 Volts Out) Fig. 1.8V.3: Turn-on transient at full rated load current (resis- tive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). ...

Page 18

SQM48T/S25018 (1.8 Volts Out) Fig. 1.8V.7: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with F tantalum + 1uF ce- ramic and Vin = 48 V. Time scale: 1 s/div. Fig. ...

Page 19

SQM48T/S25018 (1.8 Volts Out) 2.0 1.5 1.0 0 Iout [Adc] Fig. 1.8V.11: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has al- most no effect on current limit ...

Page 20

Electrical Specifications: SQM48T/S25015 (1.5 Volts Out) Conditions: T =25ºC, Airflow=300 LFM (1.5 m/s), Vin=48 Vdc, Vout=1.5 Vdc unless otherwise specified. A PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input ...

Page 21

SQM48T/S25015 (1.5 Volts Out) Fig. 1.5V.3: Turn-on transient at full rated load current (resis- tive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). ...

Page 22

SQM48T/S25015 (1.5 Volts Out) Fig. 1.5V.7: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with F tantalum + 1uF ce- ramic and Vin = 48 V. Time scale: 1 s/div. Fig. ...

Page 23

SQM48T/S25015 (1.5 Volts Out) 2.0 1.5 1.0 0 Iout [Adc] Fig. 1.5V.11: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has al- most no effect on current limit ...

Page 24

Electrical Specifications: SQM48T/S25012 (1.2 Volts Out) Conditions: T =25ºC, Airflow=300 LFM (1.5 m/s), Vin=48 Vdc, Vout=1.2 Vdc unless otherwise specified. A PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input ...

Page 25

SQM48T/S25012 (1.2 Volts Out) Fig. 1.2V.3: Turn-on transient at full rated load current (resis- tive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). ...

Page 26

SQM48T/S25012 (1.2 Volts Out) Fig. 1.2V.7: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with F tantalum + 1uF ce- ramic and Vin = 48 V. Time scale: 1 s/div. Fig. ...

Page 27

SQM48T/S25012 (1.2 Volts Out) 1.5 1.0 0 Iout [Adc] Fig. 1.2V.11: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has al- most no effect on current limit characteristic. ...

Page 28

Physical Information 1 TOP VIEW 2 3 SIDE VIEW SQM48S Pinout (Surface Mount) 1 TOP VIEW 2 3 SIDE VIEW SQM48T Pinout (Through-hole) MCD10085 Rev. 1.1, 08-Jul-10 TM SemiQ Family 25A DC-DC Converters  All dimensions are in inches [mm] ...

Page 29

Converter Part Numbering/Ordering Information Product Input Mounting Rated Load Series Voltage Scheme SQM 1/8 S Brick 36-75 V Surface Format Mount Product Input Mounting Rated Load Series Voltage Scheme SQM 1/8 T Brick 36-75 ...

Page 30

NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of ...

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