FEATURES
High efficiency 94.5% @12V/33A
Size:
57.9x36.8x11.2mm (2.28”x1.45”x0.44”)
(w/o heat spreader)
57.9x36.8x12.7mm (2.28”x1.45”x0.50”)
(with heat spreader)
Standard footprint
Industry standard pin out
Fixed frequency operation
Input UVLO, Output OCP, OVP, OTP
2250V isolation and basic insulation
No minimum load required
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950-1 (US & Canada) Recognized,
and TUV (EN60950-1) Certified
CE mark meets 73/23/EEC and 93/68/EEC
directives
Delphi Series Q48SH, 400W Quarter Brick Family
DC/DC Power Modules: 48V in, 12V/33A out
The Delphi series Q48SH, quarter Brick, 48V 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 family provides up to 400 watts of power in an industry
standard footprint and pinout. 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. All models
are fully protected from abnormal input/output voltage, current, and
temperature conditions. The Delphi Series converters meet all safety
requirements with basic insulation.
OPTIONS
Latched over current protection
Positive On/Off logic
Heat spreader available for
extended operation.
Latched over voltage protection
APPLICATIONS
Telecom / Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial / Testing Equipment
DATASHEET
DS_Q48SH12033_06102009
TECHNICAL SPECIFICATIONS
(T
A
=25°C, airflow rate=300 LFM, V
in
=48Vdc, nominal Vout unless otherwise noted;
PARAMETER
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Transient
Operating Case 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 (I
2
t)
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
Weight
Over-Temperature Shutdown ( Without heat spreader)
Operating Case Temperature (With heat spreader)
NOTES and CONDITIONS
Q48SH12033 (Standard)
Min.
Typ.
Max.
80
100
121
103
125
2250
48
34
31
3
110
10
75
36
33
15
200
20
1
Units
Vdc
Vdc
°C
°C
°C
Vdc
Vdc
Vdc
Vdc
Vdc
A
mA
mA
A
2
s
mA
dB
Vdc
mV
mV
mV
V
mV
mV
A
%
mV
mV
µs
300
300
10000
ms
ms
µF
%
%
2250
10
1000
140
Vdc
MΩ
pF
kHz
1.2
50
1.2
50
1
50
140
1.1
47
126
108
V
V
V
V
mA
uA
%
M hours
grams
°C
°C
100ms
Please refer to Fig.18
Please refer to Fig.20
-40
-40
-55
36
31
29
100% Load, 36Vin
P-P thru 12µH inductor, 5Hz to 20MHz
120 Hz
Vin=48V, Io=50%Io.max, Tc=25°C
Io=Io,min to Io,max
Vin=36V to 75V
Tc=-40°C to 100°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 & 100µF Ceramic load cap, 0.1A/µs
50% Io.max to 75% Io.max
75% Io.max to 50% Io.max
11.76
10
TBD
12.00
±300
±50
11.4
100
50
0
110
300
300
100
200
200
12.24
±600
±300
±240
12.6
200
100
33
140
Full load; 5% overshoot of Vout at startup
94.5
94.8
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=80% of Io, max; Tc=40°C
Please refer to Fig. 18
Please refer to Fig. 20
0
3
0
3
115
DS_Q48SH12033_06102009
2
ELECTRICAL CHARACTERISTICS CURVES
96
95
94
93
26
24
22
20
18
LOSS(W)
36V
48V
75V
EFFICIENCY(%).
92
91
90
89
88
87
86
85
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
16
14
12
10
8
6
4
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
36V
48V
75V
OUTPUT CURRENT(A)
OUTPUT CURRENT(A)
Figure 1:
Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C.
Figure 2:
Power dissipation vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
13
12
11
10
INPUT CURRENT(A)
9
8
7
6
5
4
3
2
30
35
40
45
50
55
60
65
70
75
INPUT VOLTAGE(V)
Figure 3:
Typical full load input characteristics at room
temperature.
DS_Q48SH12033_06102009
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 4:
Turn-on transient at zero load current) (50ms/div).
Top Trace: Vout; 5V/div; Bottom Trace: ON/OFF input: 2V/div.
Figure 5:
Turn-on transient at full rated load current (50
ms/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 (50 ms/div).
Top Trace: Vout; 5V/div; Bottom Trace: input voltage: 50V/div.
Figure 7:
Turn-on transient at full rated load current (50
ms/div). Top Trace: Vout; 5V/div; Bottom Trace: input voltage:
50V/div.
DS_Q48SH12033_06102009
4
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 100µF ceramic capacitor. Trace: Vout
(200mV/div), Scope measurement should be made using a
BNC cable (length shorter than 20 inches). Position the load
between 51mm to 76mm (2 inches to 3 inches) from the
module.
Figure 9:
Output voltage response to step-change in load
current (50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF,
tantalum capacitor and 100µF ceramic capacitor. Trace: Vout
(200mV/div), Scope measurement should be made using a
BNC cable (length shorter than 20 inches). Position the load
between 51mm to 76mm (2 inches to 3 inches) from the
module.
Figure 10:
Test set-up diagram showing measurement points
for Input Terminal Ripple Current and Input Reflected Ripple
Current.
Note: Measured input reflected-ripple current with a simulated
source Inductance (L
TEST
) of 12
μH.
Capacitor Cs offset
possible battery impedance. Measure current as shown above.
Figure 11:
Input Terminal Ripple Current, i
c
, at full rated output
current and nominal input voltage with 12µH source impedance
and 100µF electrolytic capacitor (1000 mA/div
，
2us/div).
DS_Q48SH12033_06102009
5
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