Download Data Sheet

Rev B
FEATURES
● Low Cost
● RoHS Compliant
● Efficiency up to 75%
● Low Leakage Current
● 4000VAC I/O Isolation
MDHU100 Series
4000VAC I/O Isolation
Single and Dual Outputs
2 Watt Medical DC/DC Converter
● Single and Dual Outputs
● MTBF > 2,000,000 Hours
● Internal SMT Construction
● Operating Temperature: -25°C to +60°C
● Medical & Industrial Safety: UL60601-1 and UL60950-1
DESCRIPTION
The MDHU100 series power modules are 2W DC/DC converters that are specially designed to provide ultra-high levels of isolation
(4000VAC) in a miniature DIP package. These converters operate over input voltage ranges of 4.5~5.5VDC, 10.8~13.2VDC, and
21.6~26.4VDC. This series also has single and dual output voltages of 5, 12, 15, ±12, and ±15VDC. These converters have both medical
(UL60601-1) and industrial (UL60950-1) safety approvals and are useful for a variety of applications including distributed power systems,
mixed analog/digital subsystems, portable test equipment, local power networks, and battery-backed systems.
SPECIFICATIONS: MDHU100Series
All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted.
We reserve the right to change specifications based on technological advances.
SPECIFICATION
INPUT (Vin)
Input Voltage Range
Reverse Polarity Input Current
Input Surge Voltage (1000ms)
Input Filter
Leakage Current
TEST CONDITIONS
Min
Nom
5V nominal input models
12V nominal input models
24V nominal input models
All models
5V nominal input models
12V nominal input models
24V nominal input models
All models
240VAC, 60Hz
4.5
10.8
21.6
5
12
24
Max
Unit
5.5
13.2
26.4
0.3
9
18
30
Internal Capacitor
2
-0.7
-0.7
-0.7
VDC
A
VDC
μA
OUTPUT (Vo)
Output Voltage
Output Voltage Accuracy
Output Voltage Balance
Load Regulation
Line Regulation
Output Power
Output Current Range
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
See Rating Chart
±2.0
±4.0
±0.1
±1.0
See Rating Chart
±1.2
±1.5
2
See Rating Chart
100
150
200
15
Dual Output, Balanced Loads
Io = 20% to 100%
Vin = min. to max.
Over Line, Over Load, and Over Temperature
%
%
%
W
mVpk-pk
mVpk-pk
mVrms
PROTECTION
Short Circuit Protection
Input Fuse Recommendation
0.5 seconds max.
1000mA slow-blow type
500mA slow-blow type
200mA slow-blow type
5V nominal input models
12V nominal input models
24V nominal input models
GENERAL
Efficiency
Switching Frequency
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Internal Power Dissipation
Max. Capacitive Load
60 seconds
Flash Test for 1 second
500VDC
100KHz, 1V
50
4000
6000
10
See Rating Chart
80
100
KHz
VAC
VDC
GΩ
pF
mW
15
20
650
See Rating Chart
ENVIRONMENTAL
Operating Temperature (Ambient)
Operating Temperature (Case)
Storage Temperature
Lead Temperature
Humidity
Cooling
Temperature Coefficient
MTBF
Ambient
Case
-25
-25
-40
+60
+90
+125
260
95
Free air convection
±0.01
±0.02
1.5mm from case for 10 seconds
MIL-HDBK-217F @ 25°C, Ground Benign
2000
°C
°C
°C
°C
%
%/°C
Khours
PHYSICAL
Weight
0.18oz (5.1g)
0.94 x 0.54 x 0.34 inches
23.8 x 13.7 x 8.62 mm
Non-conductive black plastic
UL94V-0
Dimensions (L x W x H)
Case Material
Flammability
SAFETY
Industrial Approvals
Medical Approvals
UL60950-1
UL60601-1
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 1 of 6
MDHU100 Series
4000VAC I/O Isolation
Single and Dual Outputs
2 Watt Medical DC/DC Converter
Rev B
MODEL SELECTION GUIDE
SINGLE OUTPUT MODELS
Model Number
Output
Voltage
5 VDC
8mA
400mA
5 VDC
(4.5 ~ 5.5 VDC)
12 VDC
3mA
165mA
15 VDC
2.5mA
5 VDC
MDHU505N2
MDHU512N2
MDHU515N2
MDHU1205N2
MDHU1212N2
12 VDC
(10.8 ~ 13.2 VDC)
MDHU1215N2
MDHU2405N2
MDHU2412N2
Output Current
Min
Max
Input Voltage
24 VDC
(21.6 ~ 26.4 VDC)
MDHU2415N2
Input Current
No Load Max Load
Max. Load
Regulation
Efficiency (Typ)
Maximum
Capacitive Load
606mA
12%
66%
330 μF
600mA
10%
66%
330 μF
133mA
605mA
10%
66%
330 μF
8mA
400mA
253mA
12%
66%
330 μF
12 VDC
3mA
165mA
250mA
10%
66%
330 μF
15 VDC
2.5mA
133mA
252mA
10%
66%
330 μF
5 VDC
8mA
400mA
126mA
12%
66%
330 μF
12 VDC
3mA
165mA
125mA
10%
66%
330 μF
15 VDC
2.5mA
133mA
126mA
10%
66%
330 μF
Output
Voltage
Output Current
Min
Max
Max. Load
Regulation
Efficiency (Typ)
Maximum
Capacitive Load
553mA
10%
72%
100 μF
542mA
10%
73%
100 μF
224mA
10%
74%
100 μF
60mA
30mA
15mA
DUAL OUTPUT MODELS
Model Number
Input Voltage
MDHU512ND2
5 VDC
(4.5 ~ 5.5 VDC)
Input Current
No Load Max Load
±12 VDC
±1.5mA
±83mA
±15 VDC
±1mA
±66mA
12 VDC
(10.8
~ 13.2 VDC)
MDHU1215ND2
±12 VDC
±1.5mA
±83mA
±15 VDC
±1mA
±66mA
220mA
10%
75%
100 μF
MDHU2412ND2
±12 VDC
±1.5mA
±83mA
112mA
10%
74%
100 μF
110mA
10%
75%
100 μF
MDHU515ND2
MDHU1212ND2
24 VDC
MDHU2415ND2 (21.6 ~ 26.4 VDC)
60mA
30mA
15mA
±15 VDC
±1mA
±66mA
NOTES
1. The MDHU100 series requires a minimum output loading to maintain specified regulations. Operation under no-load
conditions will not damage these devices, however they may not meet all listed specifications.
2. All DC/DC converters should be externally fused at the front end for protection.
3. Other input and output voltages may be available, please contact factory.
*Due to advances in technology, specifications are subject to change without notice.
BLOCK DIAGRAMS
Single Output
Dual Output
+Vo
+Vo
+Vin
+Vin
Bipolar
Push-Pull
Inverter
Bipolar
Push-Pull
Inverter
Com.
-Vin
-Vin
-Vo
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
-Vo
Page 2 of 6
MDHU100 Series
4000VAC I/O Isolation
Single and Dual Outputs
2 Watt Medical DC/DC Converter
Rev B
Efficiency vs Input Voltage (Single Output)
Efficiency vs Output Load (Single Output)
Efficiency vs Input Voltage (Dual Output)
Efficiency vs Output Load (Dual Output)
Derating Curve
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 3 of 6
MDHU100 Series
4000VAC I/O Isolation
Single and Dual Outputs
2 Watt Medical DC/DC Converter
Rev B
MECHANICAL DRAWING
Unit: inches (mm)
PIN CONNECTIONS
PIN
Single Output
Dual Output
1
-Vin
-Vin
7
NC
NC
8
NC
Common
9
+Vout
+Vout
10
-Vout
-Vout
+Vin
+Vin
16
NC: No Connection
1. Tolerance: X.X±0.25 [X.XX±0.01]
X.XX±0.13 [X.XXX±0.005]
2. Pin: ±0.05 [±0.002]
DESIGN & FEATURE CONSIDERATONS
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. 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. A capacitor mounted close to 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 100KHz)
capacitor of 2.2μF for the 5V input models, a 1.0μF for the 12V input models, and a 0.47μF for the 24V input models.
+
DC Power
Source
-
+Vin
+
+Out
DC / DC
Converter
Load
Cin
-Vin
+
-Out
+Vin
Single Output
DC / DC
Converter
DC Power
Source
-
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
+Out
-Vin
Cout
Load
-Out
Page 4 of 6
MDHU100 Series
4000VAC I/O Isolation
Single and Dual Outputs
2 Watt Medical DC/DC Converter
Rev B
Maximum Capacitive Load
The MDHU100 series has a limit 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. For optimal performance we recommend
100μF maximum capacitive load for dual outputs and 330μF capacitive load for single outputs. The maximum capacitance
can be found in the Model Selection Guide.
TEST CONFIGURATIONS
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 100KHz) to simulate
source impedance.
To Oscilloscope
+
+
Battery
+Vin
Lin
Cin
Current
Probe
+Out
DC / DC
Converter
-Vin
Load
-Out
Capacitor Cin offsets possible battery impedance.
Current ripple is measured at the input terminals of the module. Measurement bandwidth is 0 ~ 500KHz.
Peak-to-Peak Output Noise Measurement Test
Use a Cout 0.47μF ceramic capacitor.
Scope measurement should be made by using a BNC socket; measurement bandwidth is 0 ~ 20MHz. Position the load
between 50mm and 75mm from the DC/DC Converter.
+Vin
+Out
Copper Strip
Single Output
DC / DC
Converter
-Vin
+Vin
Cout
-Out
Scope
Resistive
Load
Copper Strip
Copper Strip
+Out
Scope
Cout
Dual Output
DC / DC
Converter
Com.
-Vin
-Out
Resistive
Load
Copper Strip
Cout
Scope
Copper Strip
Output Ripple Reduction
A good quality low ESR capacitor placed as close as possible 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.
+
Single Output
DC / DC
Converter
DC Power
Source
-
+Out
+Vin
-Vin
+
+Vin
Dual Output
Com.
DC / DC
Converter
DC Power
Source
Cout
-Out
Load
-
+Out
-Vin
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
-Out
Cout
Load
Page 5 of 6
MDHU100 Series
4000VAC I/O Isolation
Single and Dual Outputs
2 Watt Medical DC/DC Converter
Rev B
Thermal Considerations
Many conditions affect the thermal performance of the power module, such as orientation, airflow over the module, and board
spacing. To avoid exceeding the maximum temperature rating of the components inside the power module, the case
temperature must be kept below 90°C. The derating curves are determined from measurements obtained in an experimental
apparatus.
Position of air velocity
probe and thermocouple
50mm / 2in
15mm / 0.6in
Air Flow
DUT
COMPANY INFORMATION:
Wall Industries, Inc. has created custom and modified units for over 40 years. Our in-house research and development
engineers will provide a solution that exceeds your performance requirements on time and on budget. Our ISO9001-2000
certification is just one example of our commitment to producing a high quality, well-documented product for our customers.
Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working
closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to
provide ongoing support for your project above and beyond the design and production phases. Give us a call today to
discuss your future projects.
Contact Wall Industries for further information:
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
(603)778-2300
(888)587-9255
(603)778-9797
[email protected]
www.wallindustries.com
5 Watson Brook Rd.
Exeter, NH 03833
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 6 of 6