MDHU100 Series
2W, Ultra-High Isolation DIP, Single & Dual Output DC/DC Converters
Key Features
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4000
VAC
$
Low Profile
Efficiency up to 75%
4000VAC Isolation
MTBF > 2,000,000 Hours
Low Cost
Input 5 , 12 and 24VDC
Output 5, 12, 15, {12 and {15VDC
Temperature Performance -25] to +60]
UL60950-1 Safety Approval
Internal SMD Construction
Low Leakage Current
Low Cost
I/O Isolation
Minmax's MDHU100 2W DC/DC's are specially designed to provide ultra-high levels of isolation 4000VAC in a miniature
DIP package.
The series consists of 15 models with input voltages of 5V, 12V and 24VDC which offers standard output voltages of 5V,
12V, 15V, {12V and {15VDC .
The MDHU100 series is an excellent selection for a variety of applications including distributed power systems, mixed
analog/digital subsystems, portable test equipments, local power networks and battery backed systems.
Absolute Maximum Ratings
Parameter
Environmental Specifications
Min.
Max.
Unit
Conditions
Min.
Max.
Unit
5VDC Input Models
-0.7
9
VDC
Operating Temperature
Ambient
-25
+60
]
12VDC Input Models
-0.7
18
VDC
Operating Temperature
Case
-25
+90
]
24VDC Input Models
-0.7
30
VDC
Storage Temperature
-40
+125
]
Lead Temperature (1.5mm from case for 10 Sec.)
---
260
]
Humidity
---
95
%
Internal Power Dissipation
---
650
mW
Cooling
Free-Air Convection
Input Surge Voltage
( 1000 mS )
Parameter
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
1
MINMAX
REV:5 2009/01/16
MDHU100 Series
Model Selection Guide
Model
Number
MDHU102
MDHU104
MDHU105
MDHU108
MDHU109
MDHU112
MDHU114
MDHU115
MDHU118
MDHU119
MDHU122
MDHU124
MDHU125
MDHU128
MDHU129
Input
Voltage
Output
Voltage
VDC
VDC
5
12
15
{12
{15
5
12
15
{12
{15
5
12
15
{12
{15
5
(4.5 ~ 5.5)
12
(10.8 ~ 13.2)
24
( 21.6 ~ 26.4 )
Output Current
Max.
mA
400
165
133
{83
{66
400
165
133
{83
{66
400
165
133
{83
{66
Input Current
Min.
mA
8
3
2.5
{1.5
{1
8
3
2.5
{1.5
{1
8
3
2.5
{1.5
{1
@Max. Load
mA (Typ.)
606
600
605
553
542
253
250
252
224
220
126
125
126
112
110
Load
Regulation
@No Load
mA (Typ.)
60
30
15
% (Max.)
12
10
10
10
10
12
10
10
10
10
12
10
10
10
10
Efficiency
@Max. Load
% (Typ.)
66
66
66
72
73
66
66
66
74
75
66
66
66
74
75
Capacitive Load
Models by Vout
Maximum Capacitive Load
5V
12V
15V
{12V #
{15V #
Unit
330
330
330
100
100
uF
# For each output
Input Fuse Selection Guide
5V Input Models
12V Input Models
24V Input Models
1000mA Slow - Blow Type
500mA Slow - Blow Type
200mA Slow - Blow Type
Input Specifications
Parameter
Input Voltage Range
Reverse Polarity Input Current
Input Filter
REV:5 2009/01/16
Model
Min.
Typ.
Max.
5V Input Models
4.5
5
5.5
12V Input Models
10.8
12
13.2
24V Input Models
21.6
24
26.4
---
---
0.3
All Models
MINMAX
Unit
VDC
A
Internal Capacitor
2
MDHU100 Series
Output Specifications
Parameter
Conditions
Min.
Typ.
Max.
Unit
---
{2.0
{4.0
%
Dual Output, Balanced Loads
---
{0.1
{1.0
%
Line Regulation
Vin = Min.to Max.
---
{1.2
{1.5
%
Load Regulation
Io=20% to 100%
Output Voltage Accuracy
Output Voltage Balance
See Model Selection Guide
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Line, Load & Temp.
%
---
100
150
mV P-P
---
---
200
mV P-P
Ripple & Noise (20MHz)
---
---
15
mV rms
Temperature Coefficient
---
{0.01
{0.02
%/]
Output Short Circuit
0.5 Second Max.
General Specifications
Parameter
Conditions
Min.
Typ.
Max.
Unit
Isolation Voltage Rated
60 Seconds
4000
---
---
VAC
Flash Tested for 1 Second
6000
---
---
VDC
Isolation Voltage Test
240VAC, 60Hz
---
---
2
uA
Isolation Resistance
Leakage Current
500VDC
10
---
---
G[
Isolation Capacitance
100KHz,1V
---
15
20
pF
50
80
100
KHz
2000
---
---
K Hours
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Notes :
1. Specifications typical at Ta=+25], resistive load, nominal input voltage, rated output current unless otherwise noted.
2. Ripple & Noise measurement bandwidth is 0-20 MHz.
3. These power converters require a minimum output loading to maintain specified regulation.
4. Operation under no-load conditions will not damage these modules; however, they may not meet all specifications listed.
5. All DC/DC converters should be externally fused at the front end for protection.
6. Other input and output voltage may be available, please contact factory.
7. Specifications subject to change without notice.
Block Diagram
Single Output
Dual Output
+Vo
+Vin
+Vo
+Vin
Bipolar
Push-Pull
Inverter
Bipolar
Push-Pull
Inverter
-Vin
-Vin
-Vo
3
Com.
MINMAX
-Vo
REV:5 2009/01/16
90
90
80
80
Efficiency (%)
Efficiency (%)
MDHU100 Series
70
70
60
60
50
50
Low
Nom
High
Nom
Low
Input Voltage (V)
Input Voltage (V)
Efficiency vs Input Voltage ( Single Output )
Efficiency vs Input Voltage ( Dual Output )
90
90
80
80
70
70
Efficiency (%)
Efficiency (%)
High
60
50
60
50
40
40
30
30
20
20
10
20
40
60
80
100
10
Load Current(%)
20
40
60
80
100
Load Current(%)
Efficiency vs Output Load ( Single Output )
Efficiency vs Output Load ( Dual Output )
100
400LFM
100LFM
Output Power (%)
80
200LFM
60
Natural
convection
40
20
0
~
-25
50
60
70
80
Ambient Temperature
90
100
110
]
Derating Curve
REV:5 2009/01/16
MINMAX
4
MDHU100 Series
Test Configurations
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.
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with a inductor
Lin (4.7uH) and Cin (220uF, ESR < 1.0[ at 100 KHz) to
simulate source impedance.
Capacitor Cin, offsets possible battery impedance.
Current ripple is measured at the input terminals of the
module, measurement bandwidth is 0-500 KHz.
To Oscilloscope
+
+
Battery
+Vin
Lin
+
+Out
DC / DC
Converter
Current
Probe
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 < 1.0[ at 100
KHz) capacitor of a 2.2uF for the 5V input devices, a 1.0uF for
the 12V input devices and a 0.47uF for the 24V input devices.
+Vin
+
DC Power
Source
Load
-Vin
-Vin
Use a Cout 0.47uF ceramic capacitor.
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.
Single Output
DC / DC
Converter
Copper Strip
Cout
-Vin
-Out
+Vin
+Out
Com.
-Vin
-Out
+Vin
+Out
Single Output
DC / DC
Converter
DC Power
Source
-
-Vin
Cout
Load
-Out
Output Ripple Reduction
Scope
Resistive
Load
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.
Copper Strip
Cout
Dual Output
DC / DC
Converter
-Out
-Out
Peak-to-Peak Output Noise Measurement Test
+Out
Load
Cin
+
+Vin
DC / DC
Converter
-
Cin
+Out
Cout
Scope
+
Resistive
Load
+Vin
Single Output
DC / DC
Converter
DC Power
Source
Scope
+Out
Cout
-
-Vin
-Out
+
+Vin
+Out
Load
Design & Feature Considerations
Maximum Capacitive Load
The MDHU100 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.
For optimum performance we recommend 100uF
maximum capacitive load for dual outputs and 330uF
capacitive load for single outputs.
The maximum capacitance can be found in the data sheet.
Dual Output
Com.
DC / DC
Converter
DC Power
Source
-
-Vin
-Out
Cout
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.
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MINMAX
REV:5 2009/01/16
MDHU100 Series
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
15mm / 0.6in
REV:5 2009/01/16
50mm / 2in
Air Flow
DUT
MINMAX
6
MDHU100 Series
Physical Characteristics
Mechanical Dimensions
0.5[0.02]
8.62[0.34]
23.8[0.94]
3.8[0.15]
Side
0.5[0.02]
1
8
10
9
10.16[0.4]
7
Bottom
16
Tolerance
Pin
:
Case Material
:
Non-Conductive Black Plastic
Weight
:
5.1g
Flammability
:
UL94V-0
0.94*0.54*0.34 inches
13.7[0.54]
2.54[0.1]
23.8*13.7*8.62 mm
Case Size
Millimeters
X.X{0.25
Inches
X.XX{0.01
X.XX{0.13
X.XXX{0.005
{0.05
{0.002
Pin Connections
Pin
Single Output
Dual Output
1
-Vin
-Vin
7
NC
NC
8
NC
Common
9
+Vout
+Vout
10
-Vout
-Vout
16
+Vin
+Vin
NC: No Connection
7
MINMAX
REV:5 2009/01/16