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Delta Electronics
Delta Electronics


Q48SK

Quarter Brick Family DC/DC Power Modules



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Q48SK pdf
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.
www.DataSheet4U.com
FEATURES
Š High efficiency : 95.2% @ 12V/25A
Š Size:
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)
Š Standard footprint
Š Industry standard pin out
Š Fixed frequency operation
Š Input UVLO, Output OCP, OVP, OTP
Š Hiccup output over current protection
(OCP)
Š Hiccup output over voltage protection
(OVP)
Š Auto recovery OTP and input UVLO
Š 2250V isolation and basic insulation
Š No minimum load required
Š ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing
facility
Š UL/cUL 60950-1 (US & Canada)
recognized
OPTIONS
Š Latched over current protection
Š Positive On/Off logic
Š Heat spreader available for
extended operation.
APPLICATIONS
Š Telecom / Datacom
Š Wireless Networks
Š Optical Network Equipment
Š Server and Data Storage
Š Industrial / Testing Equipment
DATASHEET
DS_Q48SK12025_07012010



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Q48SK pdf
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted;
PARAMETER
NOTES and CONDITIONS
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Transient
Operating Hot Spot Temperature (Without heat spreader)
Operating Case Temperature (With heat spreader)
Storage Temperature
Input/Output Isolation Voltage
INPUT CHARACTERISTICS
Operating Input Voltage
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Inrush Current (I2t)
Input Reflected-Ripple Current
Input Voltage Ripple Rejection
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Regulation
Over Load
Over Line
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Operating Output Current Range
Output DC Current-Limit Inception
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient
Positive Step Change in Output Current
Negative Step Change in Output Current
Settling Time (within 1% Vout nominal)
Turn-On Transient
Start-Up Time, From On/Off Control
Start-Up Time, From Input
Maximum Output Capacitance
EFFICIENCY
100% Load
60% Load
ISOLATION CHARACTERISTICS
Input to Output
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On)
Logic High (Module Off)
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off)
Logic High (Module On)
ON/OFF Current (for both remote on/off logic)
Leakage Current (for both remote on/off logic)
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF(with heat spreader)
Weight(without heat spreader)
Weight(with heat spreader)
Over-Temperature Shutdown ( Without heat spreader)
Over-Temperature Shutdown (With heat spreader)
100ms
Refer to figure 18 for measuring point
Refer to figure 20 for measuring point
100% Load, 36Vin
Vin=48V, Io=0A
Vin=48V, Io=0A
P-P thru 12µH inductor, 5Hz to 20MHz
120 Hz
Vin=48V, Io=0, Tc=25°C
Vin=48V, Io=Io,min to Io,max
Vin=36V to 75V, Io=Io min
Vin=48V, Tc=-40°C to 85°C
over sample load, line and temperature
5Hz to 20MHz bandwidth
Full Load, 1µF ceramic, 10µF tantalum
Full Load, 1µF ceramic, 10µF tantalum
Output Voltage 10% Low
48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
50% Io.max to 75% Io.max
75% Io.max to 50% Io.max
Full load;
Vin=48V
Vin=48V
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
Ion/off at Von/off=0.0V
Logic High, Von/off=15V
Over full temp range; % of nominal Vout
Io=100% of Io, max; Tc=40°C;Airflow=600LFM
Refer to figure 18 for measuring point
Refer to figure 20 for measuring point
Q48SK12025 (Standard)
Min.
Typ.
Max.
Units
80 Vdc
100 Vdc
-40 118 °C
-40 112 °C
-55 125 °C
2250
Vdc
36 48 75 Vdc
32.0 34.0 36.0
30.0 32.0 34.0
2
11
160
10
1
10
-30
Vdc
Vdc
Vdc
A
mA
mA
A2s
mA
dB
11.4 11.7 12.0
Vdc
30 80 mV
50 mV
100 mV
11.2 12.0 Vdc
120 mV
50 mV
0 25 A
110 140 %
300 mV
300 mV
300 µs
70
80
20000
ms
ms
µF
95.2 %
94.7 %
2250
Vdc
10 M
1000
pF
160 kHz
0 0.8 V
2 50 V
0 0.8 V
2 50 V
1 mA
50 uA
115 140 %
2.6 M hours
50.5 grams
65.5 grams
126 °C
122 °C
www.DataSheet4U.com
DS_Q48SK12025_07012010
2



Part Number Q48SK
Description Quarter Brick Family DC/DC Power Modules
Maker Delta Electronics - Delta Electronics
Total Page 13 Pages
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