MFU100 Series
1W, Ultra-Miniature, High Isolation, Single Output DC/DC Converters
Key Features
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3000
VDC
$
Low Profile
Efficiency up to 79%
3000VDC Isolation
MTBF > 2,000,000 Hours
Low Cost
Input 5, 12 and 24VDC
Output 5, 9, 12 and 15VDC
Temperature Performance -40] to +75]
UL 94V-0 Package Material
Internal SMD Construction
Industry Standard Pinout
I/O Isolation
Low Cost
Taking up as little as 0.16 square inches of board space, Minmax's MFU100 1W DC/DC's are specially designed to provide power distribution
applications where space is critical in an ultra-miniature DIP package.
The series consists of 12 models with input voltages of 5V, 12V and 24VDC which offers standard single output voltages of 5V, 9V, 12V, 15VDC.
The MFU100 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
Parameter
Conditions
Min.
Max.
Unit
5VDC Input Models
-0.7
7
VDC
Operating Temperature
Ambient
-40
+75
]
12VDC Input Models
-0.7
15
VDC
Operating Temperature
Case
-25
+90
]
24VDC Input Models
-0.7
28
VDC
Storage Temperature
-40
+125
]
Lead Temperature (1.5mm from case for 10 Sec.)
---
260
]
Humidity
---
95
%
Internal Power Dissipation
---
450
mW
Cooling
Free-Air Convection
Input Surge Voltage
( 1000 mS )
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
1
MINMAX
REV:4 2008/10
MFU100 Series
Model Selection Guide
Model
Number
MFU102
MFU103
MFU104
MFU105
MFU112
MFU113
MFU114
MFU115
MFU122
MFU123
MFU124
MFU125
Input
Voltage
Output
Voltage
VDC
VDC
5
9
12
15
5
9
12
15
5
9
12
15
5
(4.5~5.5)
12
(10.8~13.2)
24
(21.6~26.4)
Output Current
Max.
mA
200
110
84
67
200
110
84
67
200
110
84
67
Min.
mA
4
2
1.5
1
4
2
1.5
1
4
2
1.5
1
Input Current
@Max. Load
mA (Typ.)
290
260
262
257
117
107
106
106
60
54
53
53
Load
Regulation
@No Load
mA (Typ.)
Efficiency
@Max. Load
% (Typ.)
69
76
77
78
71
77
79
79
70
76
79
79
% (Max.)
11
8
7
6
9
5
5
4
8
5
4
4
30
13
10
Capacitive Load
Models by Vout
5V
9V
12V
15V
Unit
Maximum Capacitive Load
33
33
33
33
uF
Input Fuse Selection Guide
5V Input Models
12V Input Models
24V Input Models
500mA Slow - Blow Type
200mA Slow - Blow Type
100mA Slow - Blow Type
Input Specifications
Parameter
Input Voltage Range
Reverse Polarity Input Current
Input Filter
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
Unit
VDC
A
Internal Capacitor
Output Specifications
Parameter
Conditions
Output Voltage Accuracy
Line Regulation
For Vin Change of 10%
Load Regulation
Io=20% to 100%
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Line, Load & Temp.
Ripple & Noise (20MHz)
Temperature Coefficient
Output Short Circuit
REV:4 2008/10
Min.
Typ.
Max.
Unit
---
{1.0
{3.0
%
---
{1.2
{1.5
See Model Selection Guide
%
%
---
100
150
mV P-P
---
---
200
mV P-P
---
---
15
mV rms
---
{0.01
{0.02
%/]
0.5 Second Max.
MINMAX
2
MFU100 Series
General Specifications
Parameter
Conditions
Min.
Typ.
Max.
Unit
Isolation Voltage Rated
60 Seconds
3000
---
---
VDC
Flash Tested for 1 Second
3300
---
---
VDC
Isolation Resistance
Isolation Voltage Test
500VDC
1000
---
---
M[
Isolation Capacitance
100KHz,1V
---
60
100
pF
50
90
110
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
+Vo
+Vin
Bipolar
Push-Pull
Inverter
-Vin
-Vo
3
MINMAX
REV:4 2008/10
MFU100 Series
100
90
80
70
Efficiency (%)
Efficiency (%)
90
80
70
60
50
40
60
30
20
50
Nom
Low
10
High
20
40
100
80
Load Current(%)
Input Voltage (V)
Efficiency vs Input Voltage
Efficiency vs Output Load
100
100
400LFM
60
Natural
convection
200LFM
40
20
80
Output Power (%)
100LFM
80
Output Power (%)
60
60
100LFM
200LFM
Natural
convection
400LFM
40
20
0
0
～
-40
50
60
70
90
80
Ambient Temperature
100
110
～
-40
]
60
70
80
Ambient Temperature
Derating Curve ( 5V Output Only )
REV:4 2008/10
50
90
100
110
]
Derating Curve ( All Other Output )
MINMAX
4
MFU100 Series
Test Configurations
Input Source Impedance
Input Reflected-Ripple Current Test Setup
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.
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
DC / DC
Converter
Current
Probe
Cin
+Out
-Vin
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 1.5uF for the 5V input devices, a 1.0uF for
the 12V input devices and a 0.47uF for the 24V devices.
Load
+
-Out
DC Power
Source
+Vin
+
+Out
DC / DC
Converter
Load
Cin
-
-Vin
-Out
Peak-to-Peak Output Noise Measurement Test
Use a Cout 0.33uF 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.
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 1uF
capacitors at the output.
+Vin
+Out
Single Output
DC / DC
Converter
-Vin
Copper Strip
Cout
Scope
+
Resistive
Load
+Vin
Single Output
DC / DC
Converter
DC Power
Source
-Out
-
+Out
-Vin
Cout
Load
-Out
Thermal Considerations
Design & Feature Considerations
Maximum Capacitive Load
The MFU100 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 33uF maximum
capacitive load for devices.
The maximum capacitance can be found in the data sheet.
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
5
MINMAX
50mm / 2in
Air Flow
DUT
REV:4 2008/10
MFU100 Series
Physical Characteristics
Mechanical Dimensions
Side
3.05[0.12]
0.5[0.02]
2.54[0.10]
7.62[0.30]
1
Pin
12.7*7.0*10.16 mm
Case Size
(24V Input)
:
12.7*8.0*10.16 mm
Case Material
:
Weight
:
0.50*0.28*0.40 inches
0.50*0.31*0.40 inches
Non-Conductive Black Plastic
1.3g (5 & 12V Input)
1.7g (24V Input)
10.16[0.40]
7.62[0.30]
4
7
Case Size
:
(5V & 12V Input)
0.5[0.02]
Bottom
Tolerance
L
0.35[0.01]
12.7[0.50]
5
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
Function
1
-Vin
4
+Vin
5
+Vout
7
-Vout
REV:4 2008/10
MINMAX
6