Q48SK12025NRFH Delta Electronics, Q48SK12025NRFH Datasheet

CONV DC/DC 25A 48V/IN 12V/O NEG

Q48SK12025NRFH

Manufacturer Part Number
Q48SK12025NRFH
Description
CONV DC/DC 25A 48V/IN 12V/O NEG
Manufacturer
Delta Electronics
Series
DELPHIr
Type
Isolated with Remote On/Off and UVLOr
Datasheet

Specifications of Q48SK12025NRFH

Output
12V
Number Of Outputs
1
Power (watts)
300W
Mounting Type
Through Hole
Voltage - Input
48V
Package / Case
6-DIP Module, 1/4 Brick
1st Output
12 VDC @ 25A
Size / Dimension
2.28" L x 1.45" W x 0.50" H (57.9mm x 36.8mm x 12.7mm)
Power (watts) - Rated
300W
Operating Temperature
-40°C ~ 112°C
Efficiency
95.2%
Approvals
cUL, UL
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-
4th Output
-
Other names
941-1012
DATASHEET
DS_Q48SK12025_07012010
Delphi Series Q48SK, Quarter Brick Family
DC/DC Power Modules:
36~75V in, 12V/25A out, 300W
The Delphi series Q48SK12025, quarter brick, 36~75V input, single output,
isolated DC/DC converter is the latest offering from a world leader in power
system and technology and manufacturing ― Delta Electronics, Inc. This
product provides up to 300 watts of power in an industry standard footprint
and pin out. With creative design technology and optimization of component
placement, these converters possess outstanding electrical and thermal
performances, as well as extremely high reliability under highly stressful
operating conditions. The Q48SK12025 offers more than 95.2% high
efficiency at 25A full load. The Q48SK12025 is fully protected from abnormal
input/output voltage, current, and temperature conditions and meets all
safety requirements with basic insulation.
APPLICATIONS
FEATURES
OPTIONS
Telecom / Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial / Testing Equipment
(OCP)
(OVP)
OHSAS18001 certified manufacturing
facility
recognized
extended operation.
High efficiency : 95.2% @ 12V/25A
Size:
Standard footprint
Industry standard pin out
Fixed frequency operation
Input UVLO, Output OCP, OVP, OTP
Hiccup output over current protection
Hiccup output over voltage protection
Auto recovery OTP and input UVLO
2250V isolation and basic insulation
No minimum load required
ISO 9001, TL 9000, ISO 14001, QS9000,
UL/cUL 60950-1 (US & Canada)
Latched over current protection
Positive On/Off logic
Heat spreader available for
57.9x36.8x11.2mm (2.28”x1.45”x0.44”)
(W/o heat spreader)
57.9*36.8*12.7mm (2.28”*1.45”0.50”)
(With heat spreader)

Related parts for Q48SK12025NRFH

Q48SK12025NRFH Summary of contents

Page 1

... The Delphi series Q48SK12025, quarter brick, 36~75V input, single output, isolated DC/DC converter is the latest offering from a world leader in power system and technology and manufacturing ― Delta Electronics, Inc. This product provides up to 300 watts of power in an industry standard footprint and pin out. With creative design technology and optimization of component ...

Page 2

TECHNICAL SPECIFICATIONS (T =25°C, airflow rate=300 LFM, V =48Vdc, nominal Vout unless otherwise noted PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous Transient Operating Hot Spot Temperature (Without heat spreader) Operating Case Temperature (With heat spreader) Storage Temperature Input/Output ...

Page 3

ELECTRICAL CHARACTERISTICS CURVES 48V 36V Figure 1: Efficiency vs. load current ...

Page 4

ELECTRICAL CHARACTERISTICS CURVES For Negative Remote On/Off Logic Figure 4: Turn-on transient at zero load current) (20ms/div). Top Trace: Vout; 5V/div; Bottom Trace: ON/OFF input: 2V/div. For Input Voltage Start up Figure 6: Turn-on transient at zero load current (20 ...

Page 5

ELECTRICAL CHARACTERISTICS CURVES Figure 8: Output voltage response to step-change in load current (75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout; 100mV/div; Bottom Trace: output current: 10A/div Figure 10: ...

Page 6

ELECTRICAL CHARACTERISTICS CURVES Figure 12: Input reflected ripple current, i source inductor at nominal input voltage and rated load current , (20 mA/div 2us/div). Figure 14: Output voltage ripple at nominal input voltage and rated load current (Io=25A)(10 mV/div, 2us/div) ...

Page 7

DESIGN CONSIDERATIONS Input Source Impedance The impedance of the input source connecting to the DC/DC power modules will interact with the modules and affect the stability. A low ac-impedance input source is recommended. If the source inductance is more than ...

Page 8

FEATURES DESCRIPTIONS Over-Current Protection The modules include an internal output over-current protection circuit, which will endure current limiting for an unlimited duration during output overload. If the output current exceeds the OCP set point, the modules will shut down (hiccup ...

Page 9

THERMAL CONSIDERATIONS Thermal management is an important part of the system design. To ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire temperature range of the module. Convection cooling is usually the dominant mode ...

Page 10

THERMAL CURVES (WITHOUT HEAT SPREADER) Figure 18: Temperature measurement location * The allowed maximum hot spot temperature is defined at 118 Q48SK12025(Standard) Output Current vs. Ambient Temperature and Air Velocity Output Current(A) @Vin = 48V (Transverse Orientation) 25 Natural Convection ...

Page 11

MECHANICAL DRAWING (WITH HEAT SPREADER) * For modules with through-hole pins and the optional heat spreader, they are intended for wave soldering assembly onto system boards; please do not subject such modules through reflow temperature profile. DS_Q48SK12025_07012010 11 ...

Page 12

MECHANICAL DRAWING (WITHOUT HEAT SPREADER) Pin No. Name 1 +Vin 2 ON/OFF 3 Case 4 -Vin 5 -Vout 6 +Vout Pin Specification: Pins 1-4 1.00mm (0.040”) diameter Pins 5 &6 1.50mm (0.059”) diameter All pins are copper with Tin plating. ...

Page 13

... MODEL LIST MODEL NAME Q48SK12025NRFA Q48SK12025NRFH Q48SK12025NRFN Q48SK12025NNFN Default remote on/off logic is negative and pin length is 0.170” For different remote on/off logic and pin length, please refer to part numbering system above or contact your local sales * For modules with through-hole pins and the optional heat spreader, they are intended for wave soldering assembly onto system boards ...

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