Delphi DIHW1000 Series DC/DC Power
Modules: 5, 12, 24, 48Vin, 3W DIP
5600Vdc isolation, single/dual output
The Delphi DIHW1000, 5, 12, 24, 48V input, single or dual output,
DIP form factor, isolated DC/DC converter is the latest offering from a
world leader in power systems technology and manufacturing ―
Delta Electronics, Inc. The DIHW1000 series operate from 5V, 12V,
24V, or 48V (2:1) and provides 5V, 12V or 24V of single output and
±12V or ±15V of dual output in an industrial standard, plastic case
encapsulated DIP package. This series provides up to 3W of output
power with 5600Vdc isolation and a typical full-load efficiency up to
84%. 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.
APPLICATIONS
Industrial
Transportation
Process/ Automation
Medical
DATASHEET
DS_DIHW1000_04072009
FEATURES
Efficiency up to 84%
Industry standard form factor and pinout
Size:
31.8 x20.3 x10.7mm (1.25” x0.80” x0.42”)
Input: 5V, 12V, 24V, 48V (2:1)
Output: 5, 12, 24, ±12, ±15V
Low ripple and noise
Short circuit protection
5600 Vdc isolation
Meets UL60950-1
ISO 9001 and ISO14001 certified
manufacturing facility
OPTIONS
2
TECHNICAL SPECIFICATIONS
TA = 25°C, airflow rate = 0 LFM, nominal Vin, nominal Vout, resistive load unless otherwise noted.
PARAMETER NOTES and CONDITIONS DIHW1000 (Standard)
Min. Typ. Max. Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Transient 5VDC input model, 1000ms -0.7 11 Vdc
Transient 12VDC input model, 1000ms -0.7 25 Vdc
Transient 24VDC input model, 1000ms -0.7 50 Vdc
Transient 48VDC input model, 1000ms -0.7 100 Vdc
Internal Power Dissipation 2500 mW
Operating Temperature Ambient -40 85 °C
Case -40 100 °C
Storage Temperature -40 125 °C
Humidity 95 %
Lead Temperature in Assembly 1.5mm from case for 10 seconds 260 °C
Input/Output Isolation Voltage 5600 Vdc
INPUT CHARACTERISTICS
Operating Input Voltage 5V model 4.5 5 9 Vdc
12V model 9 12 18 Vdc
24V model 18 24 36 Vdc
48V model 36 48 75 Vdc
Turn-On Voltage Threshold 5V model 3.7 4 4.5 Vdc
12V model 8 8.5 9 Vdc
24V model 15 17 18 Vdc
48V model 30 33 36 Vdc
Turn-Off Voltage Threshold 5V model --- --- 4 Vdc
12V model --- --- 8.5 Vdc
24V model --- --- 17 Vdc
48V model --- --- 34 Vdc
Maximum Input Current Please see Model List table on page 6
No-Load Input Current 5V model 40 mA
12V model 30 mA
24V model 20 mA
48V model 10 mA
Input Reflected Ripple Current 5V model 60 %
12V model 30 %
24V model 15 %
48V model 10 %
Short Circuit Input Power All models 2 W
Reverse Polarity Input Current 0.3 A
OUTPUT CHARACTERISTICS
Output Voltage Set Point Accuracy ±0.5 ±1.0 %
Output Voltage Balance Dual output models, balanced loads ±0.5 ±2.0 %
Output Voltage Regulation
Over Load Io=25% to 100% ±0.5 ±1.0 %
Over Line Vin = min to max ±0.3 ±0.5 %
Over Temperature Tc=-40°C to 100°C ±0.02 ±0.05 %/C
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth
Peak-to-Peak 5V output, Full Load, 0.33µF ceramic 75 100 mVp-p
Peak-to-Peak Other outputs, Full Load, 0.33µF ceramic 100 150 mVp-p
Peak-to-Peak, over line, load, temperature Full Load, 0.33µF ceramic 180 mVp-p
RMS Full Load, 0.33µF ceramic 25 mVrms
Output Over Current/Power Protection Auto restart 120 %
Output Short Circuit Continuous
Output Voltage Current Transient
Step Change in Output Current 25% step change ±3 ±6 %
Settling Time (within 1% Vout nominal) 150 500 µS
Maximum Output Capacitance 5V output 1000 µF
12, 24V output 470 µF
Dual output models, each output 220 µF
EFFICIENCY
100% Load Please see Model List table on page 6
ISOLAT ION CHARACTERIST IC S
Isolation Voltage Input to output, 60 Seconds 5600 Vdc
Isolation Voltage Test Flash Test for 1 seconds 6000 Vdc
Leakage Current 240VAC, 60Hz 2 µA
Isolation Resistance 500VDC 1000 MΩ
Isolation Capacitance 100KHz, 1V 7 13 pF
FEATURE CHARACTERISTICS
Switching Frequency 150 kHz
GENERAL SPECIFICATIONS
MTBF MIL-HDBK-217F; Ta=25°C, Ground Benign 1 M hours
Weight 16.2 grams
Case Material Non-conductive black plastic
Flammability UL94V-0
Input Fuse 5V model, 2000mA slow blown type
12V model, 1000mA slow blown type
24V model, 500mA slow blown type
48V model, 250mA slow blown type
Notes:
1. These power converters require a minimum output load to maintain specified regulation (please see page 7 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
3
ELECTRICAL CHARACTERISTICS CURVES
Figure 1: Efficiency vs. Input Voltage (Single Output) Figure 2: Efficiency vs. Input Voltage (Dual Output)
Figure 3: Efficiency vs. Output Load (Single Output)
Figure 4: Efficiency vs. Output Load (Dual Output)
Figure 5: Input Voltage Transient Rating
4
Test Configurations
+Out
-Out
+Vin
-Vin
DC / DC
Converter Load
Battery
+ Lin+
Cin
To Oscilloscope
Current
Probe
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor
Lin (4.7µH) and Cin (220µF, 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.
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 0.47µF ceramic capacitor is placed
between the terminals shown below.
+Out
-Out
+Vin
-Vin
Single Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
+Out
-Out
+Vin
-Vin
Dual Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
Com.
Scope
Cout
Design & Feature Considerations
The DIHW1000 circuit block diagrams are shown in
Figures 6 and 7.
PFM Isolation Ref.Amp
LC
Filter
+Vin
-Vin
-Vo
+Vo
Figure 6: Block diagram of DIHW1000 single output
modules.
+Vo
PFM Isolation Ref.Amp
LC
Filter
+Vin
-Vin
Com.
-Vo
Figure 7: Block diagram of DIHW1000 dual output
modules
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.
+
+Out
-Out
+Vin
-Vin
DC / DC
Converter Load
DC Power
Source
+
-
Cin
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 10µF for the 5V input devices, a 4.7 µF for the 12V
and a 2.2µF for the 24V and 48V devices.
5
Design & Feature Considerations
Maximum Capacitive Load
The DIHW1000 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. The maximum capacitance can be found on page
2 of this datasheet.
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
3.3µF capacitors at the output.
+Out
-Out
+Vin
-Vin
Load
DC Power
Source
+
-
Cout
Single Output
DC / DC
Converter
+Out
-Out
+Vin
-Vin Load
DC Power
Source
+
-
Cout
Com.
Dual Output
DC / DC
Converter
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.
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:
1. These power converters require a minimum output load
to maintain specified regulation (please see page 2 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.
6
THERMAL CONSIDERATIONS
Thermal management is an important part of the
system design. To ensure proper, reliable operation,
sufficient cooling of the power module is needed over
the entire temperature range of the module.
Convection cooling is usually the dominant mode of
heat transfer.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in
heated vertical wind tunnels that simulate the thermal
environments encountered in most electronics
equipment. This type of equipment commonly uses
vertically mounted circuit cards in cabinet racks in
which the power modules are mounted.
The following figure shows the wind tunnel
characterization setup. The power module is mounted
on a test PWB and is vertically positioned within the
wind tunnel. The space between the facing PWB and
PWB is constantly kept at 25.4mm (1’’).
Figure 7: Wind tunnel test setup
Thermal Derating
Heat can be removed by increasing airflow over the
module. To enhance system reliability, the power
module should always be operated below the maximum
operating temperature. If the temperature exceeds the
maximum module temperature, reliability of the unit
may be affected.
THERMAL CURVES
DIHW1000series Output Current vs. Ambient Temperature and Air Velocity
(Either Orientation)
0%
20%
40%
60%
80%
100%
120%
25 35 45 55 65 75 85
Ambient Temperature (℃)
Output Power (%)
Natural
Convection
Figure 8: Derating Curve
7
MODEL LIST
INPUT OUTPUT Full Load
Efficiency
Vdc (V) Max (mA) Vdc (V) Max (mA) Min (mA) %
DIHW1002 857 5 600 90 70
DIHW1003 800 12 250 37.5
75
DIHW1008 800 24 125 18.8
76
DIHW1006 800 ±12 ±125 ±18.8 75
DIHW1007 800 ±15 ±100 ±15 75
DIHW1012 338 5 600 90 74
DIHW1013 313 12 250 37.5
80
DIHW1018 313 24 125 18.8 81
DIHW1016 313 ±12 ±125 ±18.8 80
DIHW1017 313 ±15 ±100 ±15 80
DIHW1022 160 5 600 90
78
DIHW1023 151 12 250 37.5
83
DIHW1028 151 24 125 18.8
84
DIHW1026 151 ±12 ±125 ±18.8 83
DIHW1027 151 ±15 ±100 ±15 83
DIHW1032 80 5 600 90
78
DIHW1033 75 12 250 37.5
83
DIHW1038 75 24 125 18.8
84
DIHW1036 75 ±12 ±125 ±18.8 83
DIHW1037 75 ±15 ±100 ±15 83
5
(4.5 ~ 18)
12
(9 ~ 18)
24
(18 ~36)
MODEL
NAME
48
(36 ~75)
8
MECHANICAL DRAWING
11112
131524 23
SIDE VIEW
BOTTOM VIEW
0.20 [0.008"]
10.50 [0.413"]
31.8 [1.25"]
3.90 [0.154"]
2.54 [0.100"]0.60 [0.024"]
2.54 [0.100"]15.22 [0.600"]
20.3 [0.80"]
CONTACT: www.delta.com.tw/dcdc
USA:
Telephone:
East Coast: (888) 335 8201
West Coast: (888) 335 8208
Fax: (978) 656 3964
Email: DCDC@delta-corp.com
Europe:
Phone: +41 31 998 53 11
Fax: +41 31 998 53 53
Email: DCDC@delta-es.com
Asia & the rest of world:
Telephone: +886 3 4526107 ext 6220~6224
Fax: +886 3 4513485
Email: DCDC@delta.com.tw
WARRANTY
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon request from Delta.
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for its use, nor for any
infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any
patent or patent rights of Delta. Delta reserves the right to revise these specifications at any time, without notice.
Pin Sin
g
le Output Dual Output
1+Vin +Vin
11 NC Common
12 -Vout NC
13 +Vout -Vout
15 NC +Vout
23 -Vin -Vin
24 -Vin -Vin
