MJWI25 SERIES
DC-DC CONVERTER 25W, Highest Power Density
E-mail:sales@minmax.com.tw Tel:886-6-2923150
2019/03/11 REV:7 Page 1 of 8
FEATURES
►Smallest Encapsulated 25W Converter
►Ultra-compact 1" X 1" Package
►Ultra-wide 4:1 Input Voltage Range
►Fully Regulated Output Voltage
►Excellent Efficiency up to 90%
►I/O Isolation 1500 VDC
►Operating Ambient Temp. Range -40℃ to +80℃
►No Min. Load Requirement
►Overload/Voltage and Short Circuit Protection
►Remote On/Off Control, Output Voltage Trim
►Shielded Metal Case with Insulated Baseplate
►UL/cUL/IEC/EN 60950-1 Safety Approval & CE Marking
PRODUCT OVERVIEW
The MINMAX MJWI25 series is the latest range of a new generation of high performance DC-DC converter modules with very high power density.
The product offers fully 25W in a shielded metal package with dimensions of just 1.0"x1.0"x0.4". All models provide ultra-wide 4:1 input range and tightly
regulated output voltage. State-of-the-art circuit topology provides a very high efficiency up to 90% which allows an operating temperature range of -
40°C to
+80°C. These converters are qualified for demanding applications in battery operated equipment, instrumentation, data communication,
industrial and many
other space critical applications.
Model Selection Guide
Model
Number
Input
Voltage
(Range)
Output
Voltage
Output Current Input Current Reflected
Ripple
Current
Over
Voltage
Protection
Max. capacitive
Load
Efficiency
(typ.)
Max.
@Max. Load @No Load
@Max. Load
VDC
VDC
mA
mA(typ.)
mA (typ.)
VDC
μF
%
MJWI25-24S033
24
(9 ~ 36)
3.3
6000
85
50
3.9
10300
87
MJWI25-24S05 5 5000 1170 85 6.2 6800 89
MJWI25-24S12
12
2090
85
15
1200
89
MJWI25-24S15
15
1670
85
18
750
90
MJWI25-24D12
±12
±1040
85
±15
680#
89
MJWI25-24D15 ±15 ±840 1180 85 ±18 380# 89
MJWI25-48S033
48
(18 ~ 75)
3.3
6000
45
30
3.9
10300
88
MJWI25-48S05
5
5000
45
6.2
6800
90
MJWI25-48S12
12
2090
45
15
1200
90
MJWI25-48S15 15 1670 580 45 18 750 90
MJWI25-48D12
±12
±1040
45
±15
680#
89
MJWI25-48D15
±15
±840
45
±18
380#
89
# For each output
Input Specifications
Parameter
Conditions / Model
Min.
Typ.
Max.
Unit
Input Surge Voltage (100ms max.)
24V Input Models
-0.7
---
50
VDC
48V Input Models
-0.7
---
100
Start-Up Threshold Voltage
24V Input Models
---
---
9
48V Input Models
---
---
18
Start Up Time
Power Up
Nominal Vin and Constant Resistive Load
---
---
30
ms
Remote On/Off
---
---
30
ms
Input Filter
All Models
Internal LC Type
MJWI25 SERIES
DC-DC CONVERTER 25W, Highest Power Density
E-mail:sales@minmax.com.tw Tel:886-6-2923150
2019/03/11 REV:7 Page 2 of 8
®
Remote On/Off Control
Parameter Conditions Min. Typ. Max. Unit
Converter On 3.5V ~ 12V or Open Circuit
Converter Off
0V ~ 1.2V or Short Circuit
Control Input Current (on)
Vctrl = 5.0V
---
---
0.5
mA
Control Input Current (off) Vctrl = 0V --- --- -0.5 mA
Control Common Referenced to Negative Input
Standby Input Current Nominal Vin --- 3 --- mA
Output Specifications
Parameter
Conditions / Model
Min.
Typ.
Max.
Unit
Output Voltage Setting Accuracy --- --- ±1.0 %Vnom.
Output Voltage Balance
Dual Output, Balanced Loads
---
---
±2.0
%
Line Regulation
Vin=Min. to Max. @Full Load
---
---
±0.2
%
Load Regulation Io=0% to 100% Single Output --- --- ±0.2 %
Dual Output
---
--- ±1.0 %
Cross Regulation (Dual)
Asymmetrical load 25% / 100% FL
---
---
±5.0
%
Minimum Load
No minimum Load Requirement
Ripple & Noise 0-20 MHz Bandwidth 3.3V & 5V Models --- --- 100 mV P-P
12V , 15V & Dual Models --- --- 150 mV P-P
Transient Recovery Time
25% Load Step Change
---
250
---
μsec
Transient Response Deviation --- ±3 ±5 %
Temperature Coefficient --- --- ±0.02 %/℃
Trim Up / Down Range (See Page 9) % of Nominal Output Voltage
---
---
±10
%
Over Load Protection
Hiccup
---
150
---
%
Short Circuit Protection
Continuous, Automatic Recovery (Hiccup Mode 0.6Hz typ.)
General Specifications
Parameter Conditions Min. Typ. Max. Unit
I/O Isolation Voltage 60 Seconds 1500 --- --- VDC
1 Second 1800 --- --- VDC
I/O Isolation Resistance 500 VDC 1000 --- --- M
Ω
I/O Isolation Capacitance 100kHz, 1V --- --- 2000 pF
Switching Frequency --- 285 --- kHz
MTBF(calculated) MIL-HDBK-217F@25℃, Ground Benign 444,000 Hours
Safety Approvals UL/cUL 60950-1 recognition (CSA certificate), IEC/EN 60950-1 (CB-report)
MJWI25 SERIES
DC-DC CONVERTER 25W, Highest Power Density
E-mail:sales@minmax.com.tw Tel:886-6-2923150
2019/03/11 REV:7 Page 3 of 8
®
Environmental Specifications
Parameter Conditions/Model Min.
Max.
Unit
without Heatsink
with Heatsink
Operating Ambient Temperature Range
Nominal Vin, Load 100% Inom.
(for Power Derating see relative Derating Curves)
MJWI25-48S033
-40
57
65
℃
MJWI25-24S15,MJWI25-48S05
56 64
MJWI25-48S12,MJWI25-48S15
MJWI25-24S033
53
61
MJWI25-24S05, MJWI25-24S12
50 59
MJWI25-24D12, MJWI25-24D15
MJWI25-48D12, MJWI25-48D15
Thermal Impedance
20LFM Convection without Heatsink
17.6
---
℃/W
20LFM Convection with Heatsink
14.8
---
℃/W
100LFM Convection without Heatsink
13.6
---
℃/W
100LFM Convection with Heatsink
8.5
---
℃/W
200LFM Convection without Heatsink
11.8
---
℃/W
200LFM Convection with Heatsink
6.5
---
℃/W
400LFM Convection without Heatsink
8.8
---
℃/W
400LFM Convection with Heatsink
4.3
---
℃/W
Case Temperature
---
+105
℃
Storage Temperature Range
-50
+125
℃
Humidity (non condensing)
---
95
% rel. H
RFI
Six-Sided shielded, Metal Case
Lead Temperature (1.5mm from case for 10Sec.)
---
260
℃
EMC Specifications
Parameter
Standards & Level
Performance
EMI
Conduction
EN 55032, FCC part 15
Class A
EMS
EN 55024
ESD
EN 61000-4-2 Air ± 8kV , Contact ± 6kV
A
Radiated immunity
EN 61000-4-3 10V/m
A
Fast transient (6)
EN 61000-4-4 ±2kV
A
Surge
(6)
EN 61000-4-5 ±1kV
A
Conducted immunity
EN 61000-4-6 10Vrms
A
MJWI25 SERIES
DC-DC CONVERTER 25W, Highest Power Density
E-mail:sales@minmax.com.tw Tel:886-6-2923150
2019/03/11 REV:7 Page 4 of 8
®
Power Derating Curve
MJWI25-48S033 Derating Curve without Heatsink MJWI25-48S033 Derating Curve with Heatsink
MJWI25-24S15,MJWI25-48S05, MJWI25-48S12, MJWI25-48S15
Derating Curve without Heatsink
MJWI25-24S15,MJWI25-48S05, MJWI25-48S12, MJWI25-48S15
Derating Curve with Heatsink
MJWI25-24S033 Derating Curve without Heatsink MJWI25-24S033 Derating Curve with Heatsink
MJWI25-24S05, MJWI25-24S12, MJWI25-24D12
MJWI25-24D15, MJWI25-48D12, MJWI25-48D15
Derating Curve without Heatsink
MJWI25-24S05, MJWI25-24S12, MJWI25-24D12
MJWI25-24D15, MJWI25-48D12, MJWI25-48D15
Derating Curve with Heatsink
MJWI25 SERIES
DC-DC CONVERTER 25W, Highest Power Density
E-mail:sales@minmax.com.tw Tel:886-6-2923150
2019/03/11 REV:7 Page 5 of 8
®
Notes
1
Specifications typical at Ta=+25℃, resistive load, nominal input voltage, rated output current unless otherwise noted.
2
Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%.
3
Ripple & Noise measurement with a 1μF MLCC and a 10μF Tantalum Capacitor.
4
We recommend to protect the converter by a slow blow fuse in the input supply line.
5
Other input and output voltage may be available, please contact factory.
6
To meet EN 61000-4-4 & EN 61000-4-5 an external capacitor across the input pins is required, please contact MINMAX.
7
Specifications are subject to change without notice.
Package Specifications
Mechanical Dimensions Pin Connections
Pin Single Output Dual Output
1
+Vin
+Vin
2
-Vin
-Vin
3 +Vout +Vout
4
Trim
Common
5
-Vout
-Vout
6
Remote On/Off
Remote On/Off
►
All dimensions in mm (inches)
►
Tolerance: X.X±0.5 (X.XX±0.02)
X.XX±0.25 ( X.XXX±0.01)
►
Pin diameter 1.0 ±0.05 (0.04±0.002)
Physical Characteristics
Case Size
:
25.4x25.4x10.2mm (1.0x1.0x0.4 inches)
Case Material
:
Aluminium Alloy, Black Anodized Coating
Base Material
:
FR4 PCB (flammability to UL 94V-0 rated)
Pin Material
:
Copper Alloy with Gold Plate Over Nickel Subplate
Weight
:
16.5g
Heatsink (Option –HS)
Mechanical Dimensions
Heatsink Material: Aluminum
Finish: Anodic treatment (black)
Weight: 2g
►
The advantages of adding a heatsink are:
1. To improve heat dissipation and increase the
stability and reliability of the DC-DC converters at
high operating temperatures.
2. To increase operating temperature of the DC-DC
converter, please refer to Derating Curve.
5.08
[0.20]
20.32 [0.80]
25.4 [1.00]
10.16
[0.40]
10.16
[0.40]
25.4 [1.00]
6.0
[0.24]
7.62
[0.30]
126
34 5
2.5
[0.10]
2.5
[0.10]
Bottom View
10.2
[0.40]
1.00
[0.04]
17.46
[0.69] Max.
16.3 [0.64]
31.0 [1.22] Max.
Heat-Sink
Thermal Pad
Clamp
Converter
MJWI25 SERIES
DC-DC CONVERTER 25W, Highest Power Density
E-mail:sales@minmax.com.tw Tel:886-6-2923150
2019/03/11 REV:7 Page 6 of 8
®
Order Code Table
Standard
With heatsink
MJWI25-24S033
MJWI25-24S033-HS
MJWI25-24S05
MJWI25-24S05-HS
MJWI25-24S12
MJWI25-24S12-HS
MJWI25-24S15
MJWI25-24S15-HS
MJWI25-24D12
MJWI25-24D12-HS
MJWI25-24D15
MJWI25-24D15-HS
MJWI25-48S033
MJWI25-48S033-HS
MJWI25-48S05
MJWI25-48S05-HS
MJWI25-48S12
MJWI25-48S12-HS
MJWI25-48S15
MJWI25-48S15-HS
MJWI25-48D12
MJWI25-48D12-HS
MJWI25-48D15
MJWI25-48D15-HS
MJWI25 SERIES
DC-DC CONVERTER 25W, Highest Power Density
E-mail:sales@minmax.com.tw Tel:886-6-2923150
2019/03/11 REV:7 Page 7 of 8
®
External Output Trimming
Output can be externally trimmed by using the method shown below
MJWI25-XXS033 Trim Table
Trim down
1
2
3
4
5
6
7
8
9
10
%
Vout=
Vox0.99
Vox0.98
Vox0.97
Vox0.96
Vox0.95
Vox0.94
Vox0.93
Vox0.92
Vox0.91
Vox0.90
Volts
Rd=
72.61
32.55
19.20
12.52
8.51
5.84
3.94
2.51
1.39
0.50
KOhms
Trim up
1
2
3
4
5
6
7
8
9
10
%
Vout=
Vox1.01
Vox1.02
Vox1.03
Vox1.04
Vox1.05
Vox1.06
Vox1.07
Vox1.08
Vox1.09
Vox1.10
Volts
Ru=
60.84
27.40
16.25
10.68
7.34
5.11
3.51
2.32
1.39
0.65
KOhms
MJWI25-XXS05 Trim Table
Trim down
1
2
3
4
5
6
7
8
9
10
%
Vout=
Vox0.99
Vox0.98
Vox0.97
Vox0.96
Vox0.95
Vox0.94
Vox0.93
Vox0.92
Vox0.91
Vox0.90
Volts
Rd=
138.88
62.41
36.92
24.18
16.53
11.44
7.79
5.06
2.94
1.24
KOhms
Trim up
1
2
3
4
5
6
7
8
9
10
%
Vout=
Vox1.01
Vox1.02
Vox1.03
Vox1.04
Vox1.05
Vox1.06
Vox1.07
Vox1.08
Vox1.09
Vox1.10
Volts
Ru=
106.87
47.76
28.06
18.21
12.30
8.36
5.55
3.44
1.79
0.48
KOhms
MJWI25-XXS12 Trim Table
Trim down
1
2
3
4
5
6
7
8
9
10
%
Vout=
Vox0.99
Vox0.98
Vox0.97
Vox0.96
Vox0.95
Vox0.94
Vox0.93
Vox0.92
Vox0.91
Vox0.90
Volts
Rd=
413.55
184.55
108.22
70.05
47.15
31.88
20.98
12.80
6.44
1.35
KOhms
Trim up
1
2
3
4
5
6
7
8
9
10
%
Vout=
Vox1.01
Vox1.02
Vox1.03
Vox1.04
Vox1.05
Vox1.06
Vox1.07
Vox1.08
Vox1.09
Vox1.10
Volts
Ru=
351.00
157.50
93.00
60.75
41.40
28.50
19.29
12.37
7.00
2.70
KOhms
MJWI25-XXS15 Trim Table
Trim down
1
2
3
4
5
6
7
8
9
10
%
Vout=
Vox0.99
Vox0.98
Vox0.97
Vox0.96
Vox0.95
Vox0.94
Vox0.93
Vox0.92
Vox0.91
Vox0.90
Volts
Rd=
530.73
238.61
141.24
92.56
63.35
43.87
29.96
19.53
11.41
4.92
KOhms
Trim up
1
2
3
4
5
6
7
8
9
10
%
Vout=
Vox1.01
Vox1.02
Vox1.03
Vox1.04
Vox1.05
Vox1.06
Vox1.07
Vox1.08
Vox1.09
Vox1.10
Volts
Ru=
422.77
189.89
112.26
73.44
50.15
34.63
23.54
15.22
8.75
3.58
KOhms
1 2 6
3 4 5
MJWI25 Module
Bottom View
Trim Up
1 2 6
3 4 5
MJWI25 Module
Bottom View
Rd
Trim Down
Ru
MJWI25 SERIES
DC-DC CONVERTER 25W, Highest Power Density
18, Sin Sin Road, An-Ping Industrial District, Tainan 702, Taiwan
Tel: 886-6-2923150 Fax: 886-6-2923149 E-mail: sales@minmax.com.tw 2019/03/11 REV:7 Page 8 of 8
Minmax Technology Co., Ltd.
®
Test Setup
Input Reflected-Ripple Current Test Setup
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.
+Out
-Out
+Vin
-Vin
DC / DC
Converter Load
Battery
+Lin
+
Cin
To Oscilloscope
Current
Probe
Peak-to-Peak Output Noise Measurement Test
Use a 1μF ceramic capacitor and a 10μF tantalum 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.
+Out
-Out
+Vin
-Vin
Single Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
Copper Strip
+Out
-Out
+Vin
-Vin
Dual Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
Com.
Scope
Cout
Copper Strip
Copper Strip
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 1.2V. A logic high is 3.5V to 12V. The maximum sink current at the on/off terminal (Pin 6) during a logic low is -500uA. The maximum allowable leakage current
of a switch connected to the on/off terminal (Pin 6) at logic high (3.5V to 12V) is 10mA.
Overload Protection
To provide hiccup mode protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure overload for an
unlimited duration.
Overvoltage Protection
The output overvoltage clamp consists of control circuitry, which is independent of the primary regulation loop, that monitors the voltage on the output terminals.
The control loop of the clamp has a higher voltage set point than the primary loop. This provides a redundant voltage control that reduces the risk of output
overvoltage. The OVP level can be found in the output data.
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 10μF for the 24V and 48V devices.
+
+Out
-Out
+Vin
-Vin
DC / DC
Converter Load
DC Power
Source
+
-
Cin
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.
+Out
-Out
+Vin
-Vin
Load
DC Power
Source
+
-
Cout
Single Output
DC / DC
Converter
+Out
-Out
+Vin
-Vin
Load
DC Power
Source
+
-
Cout
Com.
Dual Output
DC / DC
Converter Load
Cout
Maximum Capacitive Load
The MJWI25 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 105℃. The derating curves are determined from
measurements obtained in a test setup.
DUT
Position of air velocity
probe and thermocouple 50mm / 2in Air Flow
15mm / 0.6in