MDHU100 Series
2W, Ultra-High Isolation DIP, Single & Dual Output DC/DC Converters
Key Features
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 Profile
Low Cost
4000
VAC
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
Input Surge Voltage
( 1000 mS )
5VDC Input Models
12VDC Input Models
24VDC Input Models
Min.
-0.7
-0.7
-0.7
---
---
Max.
9
18
30
260
650
Unit
VDC
VDC
VDC
]
mW
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
Conditions
Ambient
Case
Min.
-25
-25
-40
---
Max.
+60
+90
+125
95
Unit
]
]
]
%
Lead Temperature (1.5mm from case for 10 Sec.)
Internal Power Dissipation
Free-Air Convection
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
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MINMAX
REV:5 2009/01/16
MDHU100 Series
Model Selection Guide
Model
Number
Input
Voltage
Output
Voltage
Output Current
Input Current
Load
Regulation
Efficiency
VDC
MDHU102
MDHU104
MDHU105
MDHU108
MDHU109
MDHU112
MDHU114
MDHU115
MDHU118
MDHU119
MDHU122
MDHU124
MDHU125
MDHU128
MDHU129
5
(4.5 ~ 5.5)
12
(10.8 ~ 13.2)
24
( 21.6 ~ 26.4 )
VDC
5
12
15
{12
{15
5
12
15
{12
{15
5
12
15
{12
{15
Max.
mA
400
165
133
{83
{66
400
165
133
{83
{66
400
165
133
{83
{66
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
@No Load
mA (Typ.)
60
30
15
% (Max.)
12
10
10
10
10
12
10
10
10
10
12
10
10
10
10
@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
# For each output
5V
330
12V
330
15V
330
{12V
#
100
{15V
#
100
Unit
uF
Input Fuse Selection Guide
5V Input Models
1000mA Slow - Blow Type
12V Input Models
500mA Slow - Blow Type
24V Input Models
200mA Slow - Blow Type
Input Specifications
Parameter
Input Voltage Range
Model
5V Input Models
12V Input Models
24V Input Models
Reverse Polarity Input Current
Input Filter
All Models
Min.
4.5
10.8
21.6
---
Typ.
5
12
24
---
Max.
5.5
13.2
26.4
0.3
A
VDC
Unit
Internal Capacitor
REV:5 2009/01/16
MINMAX
2
MDHU100 Series
Output Specifications
Parameter
Output Voltage Accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Temperature Coefficient
Output Short Circuit
Over Line, Load & Temp.
Dual Output, Balanced Loads
Vin = Min.to Max.
Io=20% to 100%
Conditions
Min.
---
---
---
---
---
---
---
0.5 Second Max.
Typ.
{2.0
{0.1
{1.2
100
---
---
{0.01
Max.
{4.0
{1.0
{1.5
150
200
15
{0.02
Unit
%
%
%
%
mV P-P
mV P-P
mV rms
%/]
See Model Selection Guide
General Specifications
Parameter
Isolation Voltage Rated
Isolation Voltage Test
Leakage Current
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Conditions
60 Seconds
Flash Tested for 1 Second
240VAC, 60Hz
500VDC
100KHz,1V
Min.
4000
6000
---
10
---
50
2000
Typ.
---
---
---
---
15
80
---
Max.
---
---
2
---
20
100
---
Unit
VAC
VDC
uA
G[
pF
KHz
K Hours
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
Bipolar
Push-Pull
Inverter
-Vin
-Vo
-Vin
+Vin
Bipolar
Push-Pull
Inverter
+Vo
Com.
-Vo
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MINMAX
REV:5 2009/01/16
MDHU100 Series
90
90
Efficiency (%)
Efficiency (%)
80
80
70
70
60
60
50
Low
Nom
Input Voltage (V)
High
50
Low
Nom
Input Voltage (V)
High
Efficiency vs Input Voltage ( Single Output )
90
80
Efficiency (%)
70
Efficiency vs Input Voltage ( Dual Output )
90
80
70
Efficiency (%)
60
50
40
30
20
60
50
40
30
20
10
20
40
60
Load Current(%)
80
100
10
20
40
60
Load Current(%)
80
100
Efficiency vs Output Load ( Single Output )
100
100LFM
80
Output Power (%)
400LFM
200LFM
Efficiency vs Output Load ( Dual Output )
60
Natural
convection
40
20
0
-25
~
50
60
70
80
]
90
100
110
Ambient Temperature
Derating Curve
REV:5 2009/01/16
MINMAX
4
MDHU100 Series
Test Configurations
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
+
Lin
Current
Probe
+Vin
+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 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.
+
DC Power
Source
-
+
Cin
-Vin
-Out
+Vin
DC / DC
Converter
+Out
Load
DC / DC
Converter
-Vin
-Out
Cin
+
+Vin
Single Output
DC / DC
Converter
-Vin
+Out
Peak-to-Peak Output Noise Measurement Test
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.
+Vin
Single Output
DC / DC
Converter
-Vin
-Out
+Out
Copper Strip
Cout
Scope
Resistive
Load
DC Power
Source
-
Cout
-Out
Load
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.
+
+Vin
Single Output
DC / DC
Converter
-Vin
-Out
+Out
+Vin
Dual Output
DC / DC
Converter
-Vin
+Out
Com.
Copper Strip
Cout
Cout
Scope
Resistive
Load
Scope
DC Power
Source
-
-Out
Cout
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 100
u
F
maximum capacitive load for dual outputs and 330
u
F
capacitive load for single outputs.
The maximum capacitance can be found in the data sheet.
+
DC Power
Source
-
-Vin
+Vin
+Out
Dual Output
Com.
DC / DC
Converter
-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.
5
MINMAX
REV:5 2009/01/16
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