V48SC3R315
50W DC/DC Power Modules
FEATURES
High efficiency : 91.5% @ 3.3V/15A
Size:
Without heat spreader
33.0mm*22.8mm*9.5mm(1.30”*0.90”0.37”)
With heat spreader
33.0mm*22.8mm*12.7mm(1.30”*0.90”0.50”)
Industry standard pin out and footprint
Fixed frequency operation
Input UVLO
Hiccup output over current protection (OCP)
Hiccup output over voltage protection (OVP)
Auto recovery OTP
Monotonic startup into normal and pre-biased
loads
1500V 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
Delphi Series V48SC, Sixteenth Brick
Family
DC/DC Power Modules:
36~75V in, 3.3V/15A out, 50W
The Delphi Module V48SC3R315, sixteenth 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
50 watts of power in an industry standard footprint and pin out. With
creative
design
technology
and
optimization
of
component
OPTIONS
Positive ON/OFF logic
SMD PIN
Through hole with heat spreader
placement, these converters possess outstanding electrical and
thermal performances, as well as extremely high reliability under
highly stressful operating conditions. The V48SC3R315 offers more
than 91.5% high efficiency at 15A load.
APPLICATIONS
Telecom / Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial / Testing Equipment
DS_V48SC3R315_08142013
E-mail: DCDC@delta.com.tw
http://www.deltaww.com/dcdc
P1
TECHNICAL SPECIFICATIONS
PARAMETER
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Transient
Operating Ambient Temperature
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 Current (for both remote on/off logic)
Leakage Current (for both remote on/off logic)
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF(with heat spreader)
Weight
Weight
NOTES and CONDITIONS
Min.
V48SC3R315
Typ.
Max.
Units
100ms
-40
-55
80
100
85
125
1500
48
34.0
32.0
2
50
5
1
20
-50
75
36.0
34.0
3
1.7
Vdc
Vdc
°C
°C
Vdc
Vdc
Vdc
Vdc
Vdc
A
mA
mA
A2s
mA
dB
Vdc
mV
mV
mV
Vdc
mV
mV
A
A
36
32.0
30.0
1
Full 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= min to max case temperatrue
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%
75% Io.max to 50%
3.25
3.30
3.35
±10
±10
±33
3.40
3.20
50
15
0
16.5
15
22.5
100
100
100
20
20
10000
mV
mV
µs
ms
ms
µF
%
%
1500
Vdc
MΩ
pF
kHz
V
V
mA
uA
%
%
%
M hours
grams
grams
°C
°C
°C
Vin=48V
Vin=48V
91.5
91.5
10
1000
420
0
3.5
Ion/off at Von/off=0.0V
Logic High, Von/off=10V
-20
Over full temp range; % of nominal Vout
115
15.1
15.0
21.0
127
122
125
10
10
150
465
510
0.8
10
Io=80% of Io max; Tc=25°C;Airflow=300LFM
Without heat spreader
With heat spreader
Refer to Figure 18 for Hot spot 1 location
Over-Temperature Shutdown ( Without heat spreader)
(48Vin,80% Io, 200LFM,Airflow from Vin- to Vin+)
Refer to Figure 20 for Hot spot 2 location
Over-Temperature Shutdown
(With heat spreader)
(48Vin,80% Io, 200LFM,Airflow from Vin- to Vin+)
Over-Temperature Shutdown ( NTC resistor )
Refer to Figure 18 for NTC resistor location
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference.
(T
A
=25°C, Natural convection, Vin=48Vdc, nominal Vout unless otherwise noted;
DS_V48SC3R315_08142013
E-mail: DCDC@delta.com.tw
http://www.deltaww.com/dcdc
P2
ELECTRICAL CHARACTERISTICS CURVES
94
92
POWER DISSIPATION(W)
6
90
5
75Vin
EFFICIENCY(%)
88
86
48Vin
75Vin
4
36Vin
48Vin
84
82
80
78
76
74
2.5
5
7.5
10
12.5
15
OUTPUT CURRENT(A)
36Vin
3
2
1
2.5
5
7.5
10
12.5
15
OUTPUT CURRENT(A)
Figure 1:
Efficiency vs. load current for 36V, 48V, and 75V
input voltage at 25°C.
Figure 2: Power dissipation vs. load current for 36V, 48V, and
75V input voltage at 25°C.
3
INPUT CURRENT (A) _
2.5
2
1.5
1
0.5
0
30
35
40
45
50
55
60
65
70
75
INPUT VOLTAGE (V)
Figure 3:
full load input characteristics at room temperature.
DS_V48SC3R315_08142013
E-mail: DCDC@delta.com.tw
http://www.deltaww.com/dcdc
P3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 4:
Turn-on transient at zero load current) (5ms/div).
Top Trace: Vout; 1V/div; Bottom Trace: ON/OFF input: 5V/div.
Figure 5:
Turn-on transient at full load current (5ms/div).
Top Trace: Vout: 1V/div; Bottom Trace: ON/OFF input: 5V/div.
For Input Voltage Start up
Figure 6:
Turn-on transient at zero load current (5 ms/div).
Top Trace: Vout; 1V/div; Bottom Trace: input voltage: 50V/div.
Figure 7:
Turn-on transient at full load current (5 ms/div).
Top Trace: Vout; 1V/div; Bottom Trace: input voltage: 50V/div.
DS_V48SC3R315_08142013
E-mail: DCDC@delta.com.tw
http://www.deltaww.com/dcdc
P4
ELECTRICAL CHARACTERISTICS CURVES
Figure 8:
Output voltage response to step-change in load
current (50%-75%-50% of full load; di/dt = 0.1A/µs).
Load cap: 10µF, tantalum capacitor and 1µF ceramic capacitor.
Top Trace: Vout; 50mV/div; Bottom Trace: output current:
5A/div, Time: 100us/div
Figure 9:
Output voltage response to step-change in load
current (50%-75%-50% of full load; di/dt = 2.5A/µs).
Load cap: 10µF, tantalum capacitor and 1µF ceramic capacitor.
Top Trace: Vout; 100mV/div; Bottom Trace: output current:
5A/div, Time: 100us/div
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 max output
current and nominal input voltage with 12µH source impedance
and 33µF electrolytic capacitor (100 mA/div
，
2us/div).
DS_V48SC3R315_08142013
E-mail: DCDC@delta.com.tw
http://www.deltaww.com/dcdc
P5
