+Vo
Bipolar
Push-Pull
Inverter
+Vin
-Vin
-Vo
Block Diagram
Low Profile
I/O Isolation
1000
VDC
Low Cost
$
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.
Industry Standard Pinout
Internal SMD Construction
UL 94V-0 Package Material
Temperature Performance -40] to +75]
Output 5, 9, 12 and 15VDC
Input 5, 12 and 24VDC
Low Cost
MTBF > 2,000,000 Hours
1000VDC Isolation
Efficiency up to 80%
Key Features
1W, Ultra Miniature SIP, Single Output DC/DC Converter
MBU100 Series
REV:0 2005/04
MINMAX
1
79
4
53
1
67
15
MBU124
79
4
53
1.5
84
12
MBU123
76
5
54
2
110
9
MBU122
70
8
7
60
4
200
5
24
(21.6~26.4)
MBU121
80
4
105
1
67
15
MBU114
79
5
106
1.5
84
12
MBU113
77
5
107
2
110
9
MBU112
71
9
13
117
4
200
5
12
(10.8~13.2)
MBU111
78
6
258
1
67
15
MBU104
77
7
262
1.5
84
12
MBU103
76
8
260
2
110
9
MBU102
69
11
30
290
4
200
5
5
(4.5~5.5)
MBU101
% (Typ.)
% (Max.)
mA (Typ.)
mA (Typ.)
mA
mA
VDC
VDC
@Max. Load
@No Load
@Max. Load
Min.
Max.
Efficiency
Load
Regulation
Input Current
Output Current
Output
Voltage
Input
Voltage
Model
Number
Model Selection Guide
Free-Air Convection
Cooling
%
95
---
Humidity
]
+125
-40
Storage Temperature
]
+90
-40
Case
Operating Temperature
]
+75
-40
Ambient
Operating Temperature
Unit
Max.
Min.
Conditions
Parameter
Environmental Specifications
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
mW
450
---
Internal Power Dissipation
]
260
---
Lead Temperature (1.5mm from case for 10 Sec.)
VDC
30
-0.7
24VDC Input Models
VDC
18
-0.7
12VDC Input Models
VDC
9
-0.7
5VDC Input Models
Input Surge Voltage
( 1000 mS )
Unit
Max.
Min.
Parameter
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.
Absolute Maximum Ratings
Internal Capacitor
Input Filter
A
0.3
---
---
All Models
Reverse Polarity Input Current
26.4
24
21.6
24V Input Models
13.2
12
10.8
12V Input Models
VDC
5.5
5
4.5
5V Input Models
Input Voltage Range
Unit
Max.
Typ.
Min.
Model
Parameter
Input Specifications
MBU100 Series
2
MINMAX
REV:0 2005/04
K Hours
---
---
2000
MIL-HDBK-217F @ 25], Ground Benign
MTBF
KHz
110
90
50
Switching Frequency
pF
100
60
---
100KHz,1V
Isolation Capacitance
M[
---
---
1000
500VDC
Isolation Resistance
VDC
---
---
1100
Flash Tested for 1 Second
Isolation Voltage Test
VDC
---
---
1000
60 Seconds
Isolation Voltage Rated
Unit
Max.
Typ.
Min.
Conditions
Parameter
General Specifications
0.5 Second Max.
Output Short Circuit
%/]
{0.02
{0.01
---
Temperature Coefficient
%
---
---
120
Over Load
mV rms
5
---
---
Ripple & Noise (20MHz)
mV P-P
200
---
---
Over Line, Load & Temp.
Ripple & Noise (20MHz)
mV P-P
150
100
---
Ripple & Noise (20MHz)
%
See Model Selection Guide
Io=20% to 100%
Load Regulation
%
{1.5
{1.2
---
For Vin Change of 1%
Line Regulation
%
{3.0
{1.0
---
Output Voltage Accuracy
Unit
Max.
Typ.
Min.
Conditions
Parameter
Output Specifications
uF
33
33
33
33
Maximum Capacitive Load
Unit
15V
12V
9V
5V
Models by Vout
Capacitive Load
100mA Slow - Blow Type
200mA Slow - Blow Type
500mA Slow - Blow Type
24V Input Models
12V Input Models
5V Input Models
Input Fuse Selection Guide
MBU100 Series
REV:0 2005/04
MINMAX
3
Derating Curve ( All Other Output )
Derating Curve ( 5V Output Only )
]
Ambient Temperature
Output Power (%)
0
20
40
60
80
100
-40
50
60
80
100
110
90
70
400LFM
200LFM
100LFM
Natural
convection
]
Ambient Temperature
Output Power (%)
0
20
40
60
80
100
-40
50
60
80
100
110
90
70
400LFM
200LFM
100LFM
Natural
convection
Efficiency vs Output Load
Efficiency vs Input Voltage
20
30
40
50
60
70
80
90
Load Current (%)
Efficiency (%)
100
60
40
20
10
80
50
60
70
80
90
100
Efficiency (%)
Input Voltage (V)
Nom
Low
High
MBU100 Series
4
MINMAX
REV:0 2005/04
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
.
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.
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.
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.
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.
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 90C.
The derating curves are determined from measurements
obtained in an experimental apparatus.
MBU100 Series
REV:0 2005/04
MINMAX
5
+Out
-Out
+Vin
-Vin
DC / DC
Converter
Load
Battery
+
Lin
+
Cin
To Oscilloscope
Current
Probe
+Out
-Out
+Vin
-Vin
Single Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
+
+Out
-Out
+Vin
-Vin
DC / DC
Converter
Load
DC Power
Source
+
-
Cin
+Out
-Out
+Vin
-Vin
Load
DC Power
Source
+
-
Cout
Single Output
DC / DC
Converter
DUT
Position of air velocity
probe and thermocouple
50mm / 2in
Air Flow
15mm / 0.6in
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