The MINMAX MJWI10 series are cost optimized dc-dc converter modules offering 10W output power in a 1”x1”x0.4” shielded metal package with industry
standard pinout. All models provide ultra-wide 4:1 input voltage range and tight output voltage regulation.
State-of-the-art circuit topology provides a high efficiency up to 87% which allows an operating temperature range of -40°C to +80°C. Further features
include remote On/Off, overload protection and conducted EMI compliance to EN55022, class A.
Typical applications for these converters are battery operated equipment, instrumentation, distributed power architectures in communication and industrial
electronics and other space critical applications.
Model Selection Guide
Model
Number
Input
Voltage
(Range)
VDC
MJWI10-24S033
MJWI10-24S05
MJWI10-24S051
MJWI10-24S12
MJWI10-24S15
MJWI10-24S24
MJWI10-24D05
MJWI10-24D12
MJWI10-24D15
MJWI10-48S033
MJWI10-48S05
MJWI10-48S051
MJWI10-48S12
MJWI10-48S15
MJWI10-48S24
MJWI10-48D05
MJWI10-48D12
MJWI10-48D15
VDC
3.3
5
5.1
12
15
24
±5
±12
±15
3.3
5
5.1
12
15
24
±5
±12
±15
Output
Voltage
Max.
mA
2200
2000
2000
830
660
410
±1000
±410
±330
2200
2000
2000
830
660
410
±1000
±410
±330
@Max. Load
mA(typ.)
352
496
506
483
474
477
496
477
474
180
248
253
241
237
238
248
238
237
@No Load
mA(typ.)
μF
560
560
560
150
150
68
220#
100#
100#
560
560
560
150
150
68
220#
100#
100#
# For each output
Output Current
Input Current
Max. capacitive
Load
Efficiency
(typ.)
@Max. Load
%
86
84
84
86
87
86
84
86
87
85
84
84
86
87
86
84
86
87
24
(9 ~ 36)
30
48
(18 ~ 75)
20
Input Specifications
Parameter
Input Surge Voltage (1 sec. max.)
Start-Up Threshold Voltage
Under Voltage Shutdown
Reverse Polarity Input Current
Short Circuit Input Power
Model
24V Input Models
48V Input Models
24V Input Models
48V Input Models
24V Input Models
48V Input Models
Min.
-0.7
-0.7
---
---
---
---
---
---
---
Typ.
---
---
---
---
---
---
---
2500
---
Max.
50
100
9
18
8.5
17
1.5
---
5000
Unit
VDC
Internal Power Dissipation
Conducted EMI
E-mail:sales@minmax.com.tw
All Models
A
mW
mW
Compliance to EN 55022,class A and FCC part 15,class A
Operating Ambient Temperature Range (See Power Derating Curve)
Case Temperature
Storage Temperature Range
Humidity (non condensing)
Cooling
RFI
Lead Temperature (1.5mm from case for 10Sec.)
Conditions
Natural Convection
Min.
-40
---
-50
---
Free-Air convection
Six-Sided Shielded, Metal Case
---
260
℃
Max.
+80
+100
+125
95
Unit
℃
℃
℃
% rel. H
E-mail:sales@minmax.com.tw
Tel:886-6-2923150
2012/07/16 REV:15
Page 2 of 5
®
Power Derating Curve
MJWI10 SERIES
DC/DC CONVERTER 10W,
High Power Density
Output Power (%)
Derating Curve without Heatsink
Output Power (%)
Derating Curve with Heatsink
Notes
1
2
3
4
5
6
7
8
Specifications typical at Ta=+25℃, resistive load, nominal input voltage and rated output current unless otherwise noted.
Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%.
Ripple & Noise measurement bandwidth is 0-20 MHz.
All DC/DC converters should be externally fused at the front end for protection.
Other input and output voltage may be available, please contact factory.
To order the converter with heatsink, please add a
suffix -HS
(e.g. MJWI10-24S05-HS) to order code.
That “natural convection” is about 20LFM but is not equal to still air (0 LFM)
Specifications are subject to change without notice.
Package Specifications
Mechanical Dimensions
2.54
[0.10]
25.4 [1.00]
10.16
[0.40]
3
4
10.16
[0.40]
5
6.0
10.16 0.5
[0.24] [0.40 0.02]
Pin Connections
Pin
Single Output
1
+Vin
2
3
4
5
6
-Vin
+Vout
No Pin
-Vout
Remote On/Off
Dual Output
+Vin
-Vin
+Vout
Common
-Vout
Remote On/Off
20.3 [0.80]
Bottom View
25.4 [1.00]
1.00
[0.04]
1
2
6
►
All
dimensions in mm (inches)
(X.XX±0.01)
X.XX±0.13 ( X.XXX±0.005)
►
Tolerance: X.X±0.25
5.08
[0.20]
7.62
[0.30]
2.54
[0.10]
►
Pin
diameter
1.0 ±0.05 (0.04±0.002)
Physical Characteristics
Case Size
Case Material
Base Material
Pin Material
Weight
:
:
:
:
:
25.4x25.4x10.16mm (1.0x1.0x0.4 inches)
Aluminium Alloy, Black Anodized Coating
FR4 PCB (flammability to UL 94V-0 rated)
Copper Alloy with Gold Plate Over Nickel Subplate
15g
E-mail:sales@minmax.com.tw
Tel:886-6-2923150
2012/07/16 REV:15
Page 3 of 5
®
MJWI10 SERIES
DC/DC CONVERTER 10W,
High Power Density
Heatsink (Option –HS)
Mechanical Dimensions
Heatsink Material: Aluminum
Finish: Anodic treatment (black)
16.3 [0.64]
Weight: 2g
17.46
[0.69] Max.
31.0 [1.22] Max.
►
The
advantages of adding a heatsink are:
Heat-Sink
Thermal Pad
Clamp
Converter
1.To help heat dissipation and increase the stability
and reliability of DC/DC converters at high
operating temperature atmosphere.
2.To upgrade the operating temperature of DC/DC
converters, please refer to Derating Curve.
E-mail:sales@minmax.com.tw
Tel:886-6-2923150
2012/07/16 REV:15
Page 4 of 5
®
Test Setup
Input Reflected-Ripple Current Test Setup
MJWI10 SERIES
DC/DC CONVERTER 10W,
High Power Density
Input reflected-ripple current is measured with a inductor Lin (4.7μH) and Cin (220μF, ESR < 1.0Ω 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
+Vin
Current
Probe
+Out
Load
DC / DC
Converter
-Vin
-Out
Cin
Peak-to-Peak Output Noise Measurement Test
Use a Cout 0.47μF 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
Copper Strip
Resistive
Scope
Load
+Vin
Dual Output
DC / DC
Converter
-Vin
+Out
Com.
-Out
Copper Strip
Cout
Copper Strip
Cout
Copper Strip
Scope
Scope
Resistive
Load
Technical Notes
Remote On/Off
Positive logic remote on/off turns the module on during a logic high voltage on the remote on/off pin, and off during a logic low. To turn the power module on and off,
the user must supply a switch to control the voltage between the on/off terminal and the -Vin terminal.
The switch can be an open collector or equivalent. A logic low is 0V to 1V. A logic high is 2.5V to 50V. The maximum sink current at on/off terminal during a logic
low is -500μA. The maximum allowable leakage current of the switch at on/off terminal (2.5 to 50V) is 500μA.
Overcurrent Protection
To provide protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure current limiting for an unlimited
duration. At the point of current-limit inception, the unit shifts from voltage control to current control. The unit operates normally once the output current is brought back
into its specified range.
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 <
1.0Ω at 100 KHz) capacitor of a 6.8μF for the 24V and 48V devices.
+
DC Power
Source
-
+
Cin
-Vin
-Out
+Vin
DC / DC
Converter
+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 4.7μF capacitors at the output.
+
DC Power
Source
-
-Vin
+Vin
Single Output
DC / DC
Converter
-Out
+Out
+
DC Power
Source
-
+Vin
+Out
Dual Output
DC / DC
Com.
Converter
Cout
Cout
Load
Load
Cout
Load
-Vin
-Out
Maximum Capacitive Load
The MJWI10 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. The maximum capacitance can be found in the data sheet.
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 100℃. The derating curves are determined
from measurements obtained in a test setup.
Position of air velocity
probe and thermocouple
15mm / 0.6in
50mm / 2in
Air Flow
DUT
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