FEATURES
Efficiency up to 83%
Industry standard form factor and pinout
Case size:
32.3 x14.8 x10.2mm (1.27” x0.58” x0.40”)
Input: 12V, 24V, 48V (2:1)
Output: 3.3, 5, 12, 15,
±5, ±12, ±15V
Low ripple and noise
Short circuit protection
1500V isolation
Mositure Sensitity Level (MSL) 2
UL 94V-0 Package Material
ISO 9001 and ISO14001 certified
manufacturing facility
CSA 60950-1 Recognized
Delphi DSIW1000 Series DC/DC Power
Modules: 12, 24, 48Vin, 3W SMD
The Delphi DSIW1000, 12V, 24V, and 48V 2:1 wide input, single or
dual output, SMD form factor, isolated DC/DC converter is the latest
offering from a world leader in power systems technology and
manufacturing
―
Delta Electronics, Inc. The DSIW1000 series
operate from 12V, 24V, or 48V (2:1) and provides 3.3V, 5V, 12V, or
15V of single output or
±
5V,
±
12V, or
±
15V of dual output in an
industrial standard, plastic case encapsulated SMD package. This
series provides up to 3W of output power with 1500V isolation and a
typical full-load efficiency up to 83%. 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.
OPTIONS
APPLICATIONS
Industrial
Transportation
Process/ Automation
Telecom
Data Networking
DATASHEET
DS_DSIW1000_12032008
TECHNICAL SPECIFICATIONS
T
A
= 25°C, airflow rate = 0 LFM, nominal Vin, nominal Vout, resistive load unless otherwise noted.
PARAMETER
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Transient
Transient
Transient
Internal Power Dissipation
Operating Temperature
Storage Temperature
Humidity
Lead Temperature in Assembly
Input/Output Isolation Voltage
INPUT CHARACTERISTICS
Operating Input Voltage
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Maximum Input Current
No-Load Input Current
Input Reflected Ripple Current
Short Circuit Input Power
Reverse Polarity Input Current
OUTPUT CHARACTERISTICS
Output Voltage Set Point Accuracy
Output Voltage Balance
Output Voltage Regulation
Over Load
Over Line
Over Temperature
Output Voltage Ripple and Noise
Peak-to-Peak
Peak-to-Peak, over line, load, temperature
RMS
Output Over Current/Power Protection
Output Short Circuit
Output Voltage Current Transient
Step Change in Output Current
Settling Time (within 1% Vout nominal)
Maximum Output Capacitance
EFFICIENCY
100% Load
ISOLATION CHARACTERISTICS
Isolation Voltage
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
GENERAL SPECIFICATIONS
MTBF
Weight
Case Material
Flammability
Input Fuse
NOTES and CONDITIONS
12V input model, 1000ms
24V input model, 1000ms
48V input model, 1000ms
Ambient
Case
DSIW1000 (Standard)
Min.
-0.7
-0.7
-0.7
-40
-40
-40
Typ.
Max.
25
50
100
2500
85
100
125
95
260
12
24
48
6
12
24
---
---
---
20
5
3
25
15
10
1.5
0.5
±0.5
±0.5
±0.3
±0.1
±0.01
50
120
±2
200
±6
500
4700
180
±1.0
±2.0
±1.0
±0.3
±0.02
75
100
10
18
36
75
8
18
36
8
16
32
Units
Vdc
Vdc
Vdc
mW
°C
°C
°C
%
°C
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
mA
mA
mA
mA
mA
mA
W
A
%
%
%
%
%/C
mV
mV
mV
%
%
uS
µF
µF
1.5mm from case for 10 seconds
1500
12V model
24V model
48V model
12V model
24V model
48V model
12V model
24V model
48V model
Please see Model List table on page 6
12V model
24V model
48V model
12V model
24V model
48V model
All models
9
18
36
4.5
8
16
---
---
---
Dual output models
Io=10% to 100%
Vin= min to max
Tc=-40°C to 100°C
5Hz to 20MHz bandwidth
Full Load, 0.47µF ceramic
Full Load, 0.47µF ceramic
Full Load, 0.47µF ceramic
Auto restart
Continuous
25% step change
Single output models
Dual output models, each output
Please see Model List table on page 6
Input to output, 60 Seconds
Flash Test for 1 seconds
500VDC
100KHz, 1V
1500
1650
1000
65
300
100
Vdc
Vdc
MΩ
pF
kHz
M hours
grams
MIL-HDBK-217F; Ta=25°C, Ground Benign
Non-conductive black plastic
UL94V-0
12V model, 750mA slow blown typ
24V model, 350mA slow blown type
48V model, 200mA slow blown type
1
8.8
2
ELECTRICAL CHARACTERISTICS CURVES
100
90
Efficiency (%)
80
70
60
50
100
90
Efficiency (%)
Low
Nom
Input Voltage (V)
High
80
70
60
50
Low
Nom
Input Voltage (V)
High
Figure 1:
Efficiency vs. Input Voltage (Single Output)
Figure 2:
Efficiency vs. Input Voltages (Dual Output)
90
80
Efficiency (%)
90
80
Efficiency (%)
70
60
50
40
30
10
20
40
60
80
100
70
60
50
40
30
20
20
10
20
40
60
80
100
Load Current (%)
Load Current (%)
Figure 3:
Efficiency vs. Output Load (Single Output)
Figure 4:
Efficiency vs. Output Load (Dual Output)
3
Test Configurations
Input Reflected-Ripple Current Test Setup
To Oscilloscope
+
Battery
+
Lin
Current
Probe
+Vin
+Out
Load
DC / DC
Converter
-Vin
-Out
Design & Feature Considerations
The DSIW1000 circuit block diagrams are shown in
Figures 5 and 6.
Cin
+Vin
LC
Filter
+Vo
Input reflected-ripple current is measured with a inductor
Lin (4.7uH) and Cin (220uF, ESR < 1.0Ω at 100 KHz) to
simulate source impedance. Capacitor Cin is to offset
possible battery impedance. Current ripple is measured at
the input terminals of the module and measurement
bandwidth is 0-500 KHz.
-Vo
PFM
Isolation
Ref.Amp
-Vin
Peak-to-Peak Output Noise Measurement
Scope measurement should be made by using a BNC
socket, measurement bandwidth is 0-20 MHz. Position the
load between 50 mm and 75 mm from the DC/DC
Converter. A Cout of 0.47uF ceramic capacitor is placed
between the terminals shown below.
+Vin
Single Output
DC / DC
Converter
-Vin
-Out
+Out
Copper Strip
Cout
Scope
Resistive
Load
Figure 5:
Block diagram of DSIW1000 single output
modules.
+Vin
LC
Filter
+Vo
Com.
-Vo
PFM
Isolation
Ref.Amp
-Vin
Figure 6:
Block diagram of DSIW1000 dual output
modules
+Vin
Dual Output
DC / DC
Converter
-Vin
+Out
Com.
Cout
-Out
Scope
Copper Strip
Cout
Scope
Resistive
Load
Input Source Impedance
The power module should be connected to a low ac-
impedance input source. Highly inductive source
impedances can affect the stability of the power module.
+
DC Power
Source
-
+
Cin
-Vin
-Out
+Vin
DC / DC
Converter
+Out
Load
In applications where power is supplied over long lines
and output loading is high, it may be necessary to use a
capacitor at the input to ensure startup.
Capacitor mounted close to the input of the power
module helps ensure stability of the unit, it is
recommended to use a good quality low Equivalent
Series Resistance (ESR < 1.0Ω at 100 KHz) capacitor of
a 3.3uF for the 12V input devices, and a 1.5uF for the
24V and 48V devices.
4
Design & Feature Considerations
Maximum Capacitive Load
The DIW1000 series has limitation of maximum
connected capacitance at the output. The power
module may be operated in current limiting mode
during start-up, affecting the ramp-up and the startup
time.
Soldering and Cleaning Considerations
Post solder cleaning is usually the final board assembly
process before the board or system undergoes electrical
testing. Inadequate cleaning and/or drying may lower the
reliability of a power module and severely affect the
finished circuit board assembly test. Adequate cleaning
and/or drying is especially important for un-encapsulated
and/or open frame type power modules. For assistance
on appropriate soldering and cleaning procedures,
please contact Delta’s technical support team.
Notes:
Output Ripple Reduction
A good quality low ESR capacitor placed as close as
practicable across the load will give the best ripple and
noise performance.
To reduce output ripple, it is recommended to use
3.3uF capacitors at the output.
+
DC Power
Source
-
-Vin
+Vin
Single Output
DC / DC
Converter
-Out
+Out
1. These power converters require a minimum output load
to maintain specified regulation (please see page 6 for
the suggested minimum load). Operation under no-load
conditions will not damage these modules; however,
they may not meet all specifications listed above.
2. These DC/DC converters should be externally fused at
the front end for protection.
Cout
Load
+
DC Power
Source
-
+Vin
+Out
Dual Output
DC / DC
Com.
Converter
Cout
Load
-Vin
-Out
Overcurrent Protection
To provide protection in a fault (output overload)
condition, the unit is equipped with internal current
limiting circuitry and can endure current limiting for an
unlimited duration. At the point of current-limit
inception, the unit shifts from voltage control to current
control. The unit operates normally once the output
current is brought back into its specified range.
5
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