MBU100 Series
1W, Ultra Miniature SIP, Single Output DC/DC Converter
Key Features
Efficiency up to 80%
1000VDC 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
Taking up as little as 0.18 square inches of board space,
Minmax's MBU100 1W DC/DC's are specially designed to
provide power distribution applications where space is critical
in an ultra-miniature SIP 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 MBU100 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.
$
Low Cost
1000
VDC
I/O Isolation
Low Profile
Block Diagram
+Vo
+Vin
Bipolar
Push-Pull
Inverter
-Vin
-Vo
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MINMAX
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MBU100 Series
Model Selection Guide
Model
Number
Input
Voltage
Output
Voltage
Output Current
Input Current
Load
Regulation
Efficiency
VDC
MBU101
MBU102
MBU103
MBU104
MBU111
MBU112
MBU113
MBU114
MBU121
MBU122
MBU123
MBU124
5
(4.5~5.5)
12
(10.8~13.2)
24
(21.6~26.4)
VDC
5
9
12
15
5
9
12
15
5
9
12
15
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
@Max. Load
mA (Typ.)
290
260
262
258
117
107
106
105
60
54
53
53
@No Load
mA (Typ.)
30
13
7
% (Max.)
11
8
7
6
9
5
5
4
8
5
4
4
@Max. Load
% (Typ.)
69
76
77
78
71
77
79
80
70
76
79
79
Absolute Maximum Ratings
Parameter
5VDC Input Models
Input Surge Voltage
12VDC Input Models
( 1000 mS )
24VDC Input Models
Lead Temperature (1.5mm from case for 10 Sec.)
Internal Power Dissipation
Min.
-0.7
-0.7
-0.7
---
---
Max.
9
18
30
260
450
Unit
VDC
VDC
VDC
]
mW
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.
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
Conditions
Ambient
Case
Min.
Max.
-40
+75
-40
+90
-40
+125
---
95
Free-Air Convection
Unit
]
]
]
%
6. Other input and output voltage may be available,
please contact factory.
7. Specifications subject to change without notice.
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:0 2005/04
MINMAX
2
MBU100 Series
Output Specifications
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Load
Temperature Coefficient
Output Short Circuit
Conditions
For Vin Change of 1%
Io=20% to 100%
Over Line, Load & Temp.
Min.
Typ.
Max.
---
{1.0
{3.0
---
{1.2
{1.5
See Model Selection Guide
---
100
150
---
---
200
---
---
5
120
---
---
---
{0.01
{0.02
0.5 Second Max.
Unit
%
%
%
mV P-P
mV P-P
mV rms
%
%/]
General Specifications
Parameter
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
Conditions
60 Seconds
Flash Tested for 1 Second
500VDC
100KHz,1V
MIL-HDBK-217F @ 25], Ground Benign
Min.
1000
1100
1000
---
50
2000
Typ.
---
---
---
60
90
---
Max.
---
---
---
100
110
---
Unit
VDC
VDC
M[
pF
KHz
K Hours
Capacitive Load
Models by Vout
Maximum Capacitive Load
5V
33
9V
33
12V
33
15V
33
Unit
uF
Input Fuse Selection Guide
5V Input Models
500mA Slow - Blow Type
12V Input Models
200mA Slow - Blow Type
24V Input Models
100mA Slow - Blow Type
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MINMAX
REV:0 2005/04
MBU100 Series
90
80
Efficiency (%)
70
60
50
40
100
90
Efficiency (%)
80
70
60
50
30
20
10
20
40
60
80
100
Low
Nom
Input Voltage (V)
High
Load Current (%)
Efficiency vs Input Voltage
Efficiency vs Output Load
100
80
Output Power (%)
100LFM
Natural
convection
400LFM
Output Power (%)
100
80
100LFM
Natural
convection
200LFM
200LFM
400LFM
60
60
40
40
20
0
-40
20
0
50
60
70
80
]
90
100
110
-40
〜
〜
50
60
70
80
]
90
100
110
Ambient Temperature
Ambient Temperature
Derating Curve ( 5V Output Only )
Derating Curve ( All Other Output )
REV:0 2005/04
MINMAX
4
MBU100 Series
Test Configurations
+
+Vin
+
Cin
-Vin
-Out
DC / DC
Converter
+Out
Load
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
DC Power
Source
-
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.
+
DC Power
Source
-
-Vin
+Vin
Single Output
DC / DC
Converter
-Out
+Out
DC / DC
Converter
-Vin
-Out
Cin
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.
+Vin
Single Output
DC / DC
Converter
-Vin
-Out
+Out
Copper Strip
Cout
Resistive
Scope
Load
Cout
Load
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.
Design & Feature Considerations
Maximum Capacitive Load
The MBU100 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.
Position of air velocity
probe and thermocouple
15mm / 0.6in
50mm / 2in
Air Flow
DUT
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.
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.
5
MINMAX
REV:0 2005/04
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