FEATURES
High efficiency: 88.5% @ 1.8V/40A
Size: 33.0x22.8x9.5mm
(1.30”x0.90”x0.37”)
Industry standard footprint and pinout
Fixed frequency operation
SMD and through-hole versions
Input UVLO
OTP and output OCP, OVP
Output voltage trim: -20%, +10%
Monotonic startup into normal and
pre-biased loads
1500V isolation and basic insulation
No minimum load required
No negative current during power or
enable on/off
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS18001 certified manufacturing
facility
UL/cUL 60950-1 (US & Canada) -
recognized
Delphi Series V48SH, 1/16
th
Brick 100W
DC/DC Power Modules: 48V in, 1.8V, 40A out
The Delphi Series V48SH, 1/16 Brick, 48V input, single output,
isolated DC/DC converter, is the latest offering from a world leader in
power systems technology and manufacturing
―
Delta Electronics,
Inc. This product family provides up to 100 watts of power or 40A of
th
output current (1.8V and below) in an industry standard 1/16 brick
form factor (1.30” x 0.90”). The 1.8V output offers one of the highest
output currents available and provides up to 88.5% efficiency at full
load. With creative design technology and optimization of component
placement, these converters possess outstanding electrical and
thermal performance, as well as extremely high reliability under highly
stressful operating conditions. All modules are protected from
abnormal input/output voltage, current, and temperature conditions.
For lower power needs, but in a similar small form factor, please check
out Delta, V36SE (50W or 15A), S48SP (36W or 10A) and S36SE
(17W or 5A) series standard DC/DC modules.
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OPTIONS
SMD pins
Short pin lengths available
Positive remote On/Off
Heat spreader
APPLICATIONS
Optical Transport
Data Networking
Communications
Servers
DATASHEET
DS_V48SH1R840_05162011
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 (100ms)
Operating 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 (I
2
t)
Start up Current
Input Terminal Ripple Current
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 Over Current Protection
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)
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
Weight
Over-Temperature Shutdown
NOTES and CONDITIONS
V48SH1R840 (Standard)
Min.
Typ.
Max.
80
100
120
125
1500
75
34
32
2
50
7
35.5
33.5
3
2.4
80
12
1
3.6
0.11
15
1.827
Units
Vdc
Vdc
°C
°C
Vdc
Vdc
Vdc
Vdc
Vdc
A
mA
mA
A
2
s
A
A
mA
dB
Vdc
mV
mV
mV
V
mV
mV
A
%
mV
mV
us
ms
ms
µF
%
%
1500
10
1500
300
Vdc
MΩ
pF
kHz
0.8
15
0.8
15
0.3
50
10
10
130
1.9
14.2
130
V
V
V
V
mA
uA
uA
%
%
%
M hours
grams
°C
100ms
Refer to figure 20 for measuring point
-40
-55
36
32.5
30.5
1
100% Load, 36Vin
With 100uF external input capacitor
Peak, Vin=36V, 100% Load, With 10000uF Co
RMS, Vin=48V, With 100uF input cap.
P-P thru 12µH inductor, 5Hz to 20MHz
120 Hz
Vin=48V, Io=Io.max, Tc=25°C
Io=Io, min to Io, max
Vin=36V to 75V
Tc=-40°C to125°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
12
12
Cap ESR>=15mohm;
Full load; 5% overshoot of Vout at startup;
Vin=48V
Vin=48V
0
87
87
88.5
88.5
1.773
2.4
0.07
8
45
1.8
±5
±5
±18
1.746
70
25
0
110
50
50
150
1.854
120
50
40
140
100
100
300
28
28
10000
Von/off
Von/off
Von/off
Von/off
Ion/off at Von/off=0.0V
Ion/off at Von/off=2V
Logic High, Von/off=15V
Pout
≦
max rated power
Pout
≦
max rated power
Over full temp range; % of nominal Vout
Io=80% of Io, max; Ta=40°C, airflow rate=400FLM
Open frame
Refer to figure 20 for measuring point
-0.7
2
-0.7
2
10
-20
DS_V48SH1R840_05162011
2
ELECTRICAL CHARACTERISTICS CURVES
91
88
85
82
79
76
73
70
8
16
24
32
40
11
10
9
8
75Vin
36Vin
48Vin
36Vin
48Vin
75Vin
7
6
5
4
3
2
8
16
24
32
40
Figure 1:
Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C
2.5
2.3
2.1
1.9
IN PU T C U R R EN T (A)
Figure 2:
Power dissipation vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
1.7
1.5
1.3
1.1
0.9
0.7
0.5
30
35
40
45
50
55
60
65
70
75
INPUT VOLTAGE(V)
Figure 3:
Typical full load input characteristics at room
temperature
DS_V48SH1R840_05162011
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Start up
0
0
0
0
Figure 4:
Turn-on transient at full rated load current (10
ms/div). Vin=48V. Top Trace: Vout, 1.0V/div; Bottom Trace:
ON/OFF input, 5V/div
Figure 5:
Turn-on transient at zero load current (10 ms/div).
Vin=48V. Top Trace: Vout: 1.0V/div, Bottom Trace: ON/OFF
input, 5V/div
For Input Voltage Start up
0
0
0
Figure 6:
Turn-on transient at full rated load current (10
ms/div). Vin=48V. Top Trace: Vout, 1.0V/div; Bottom Trace: Vin,
20V/div
0
Figure 7:
Turn-on transient at zero load current (10 ms/div).
Vin=48V. Top Trace: Vout, 1.0V/div; Bottom Trace: Vin, 20V/div
0
0
0
Figure 8:
Output voltage response to step-change in load
current (75%-50%-75% of Io, max; di/dt = 0.1A/µs). Load cap:
10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (50mV/div, 200us/div), Bottom Trace: Iout (10A/div).
Scope measurement should be made using a BNC cable
(length shorter than 20 inches). Position the load between 51
mm to 76 mm (2 inches to 3 inches) from the module
0
Figure 9:
Output voltage response to step-change in load
current (75%-50%-75% of Io, max; di/dt = 1.0A/µs). Load cap:
220µF tantalum capacitor and 1µF ceramic capacitor. Top
Trace: Vout (100mV/div, 200us/div), Bottom Trace: Iout
(10A/div). Scope measurement should be made using a BNC
cable (length shorter than 20 inches). Position the load
between 51 mm to 76 mm (2 inches to 3 inches) from the
module
DS_V48SH1R840_05162011
4
ELECTRICAL CHARACTERISTICS CURVES
is
ic
Vin+
+
Cs: 220uF
100uF,
+
Vin-
ESR=0.2 ohm @
25
o
C 100KHz
0
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 33µF electrolytic capacitor (200 mA/div, 1us/div)
Copper Strip
Vo(+)
0
Vo(-)
10u
1u
SCOPE
RESISTIVE
LOAD
Figure 12:
Input reflected ripple current, i
s
, through a 12µH
source inductor at nominal input voltage and rated load current
(20 mA/div, 1us/div)
Figure 13:
Output voltage noise and ripple measurement test
setup
0
Figure 14:
Output voltage ripple at nominal input voltage and
rated load current (Io=40A)(50 mV/div, 1us/div)
Load capacitance: 1µF ceramic capacitor and 10µF tantalum
capacitor. Bandwidth: 20 MHz. Scope measurements should be
made using a BNC cable (length shorter than 20 inches).
Position the load between 51 mm to 76 mm (2 inches to 3
inches) from the module.
DS_V48SH1R840_05162011
5
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