MEW1000 Series
2W, Wide Input Range SIP, Single & Dual Output DC/DC Converters
Key Features
Efficiency up to 80%
1500VDC Isolation
MTBF > 1,000,000 Hours
4:1 Wide Input Range
Low Cost
Remote On/Off Control
Low Ripple and Noise
Temperature Performance -40] to +75]
UL 94V-0 Package Material
Internal SMD Construction
$
Low Noise
Low Profile
Low Cost
1500
VDC
I/O Isolation
Remote on/off
4:1
Wide Range
Minmax's MEW1000-Series power modules are low-profile dc-dc converters that operate over input voltage ranges of 9-36VDC and
18-75VDC which provide precisely regulated output voltages of 3.3V, 5V, 12V, 15V, {5V, {12V and {15VDC.
The MEW1000 series is an excellent selection for data communication equipments, mobile battery driven equipments, distributed power
systems, telecommunication equipments, mixed analog/digital subsystems, process/machine control equipments, computer peripheral
systems and industrial robot systems.
The modules have a maximum power rating of 2W and a typical full-load efficiency of 80%, continuous short circuit, 30mV output ripple,
built-in filtering for both input and output minimize the need for external filtering.
Absolute Maximum Ratings
Parameter
24VDC Input Models
Input Surge Voltage
( 1000 mS )
48VDC Input Models
Lead Temperature (1.5mm from case for 10 Sec.)
Internal Power Dissipation
Min.
-0.7
-0.7
---
---
Max.
50
100
260
2,500
Unit
VDC
VDC
]
mW
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
Conditions
Ambient
Case
Min.
-40
-40
-55
Max.
+75
+90
+105
Unit
]
]
]
%
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
---
95
Free-Air Convection
1
MINMAX
REV:3 2008/10/02
MEW1000 Series
Model Selection Guide
Model
Number
Input
Voltage
Output
Voltage
Output Current
Input Current
Reflected
Ripple
Current
mA (Typ.)
Efficiency
VDC
MEW1021
MEW1022
MEW1023
MEW1024
MEW1025
MEW1026
MEW1027
MEW1031
MEW1032
MEW1033
MEW1034
MEW1035
MEW1036
MEW1037
24
( 9 ~ 36 )
48
( 18 ~ 75 )
VDC
3.3
5
12
15
{5
{12
{15
3.3
5
12
15
{5
{12
{15
Max.
mA
500
400
167
134
{200
{83
{67
500
400
167
134
{200
{83
{67
Min.
mA
125
100
42
33
{50
{21
{17
125
100
42
33
{50
{21
{17
@Max. Load
mA (Typ.)
97
110
106
105
114
108
106
49
58
54
54
60
55
55
@No Load
mA (Typ.)
20
300
15
600
@Max. Load
% (Typ.)
71
76
79
80
73
77
79
70
72
78
78
70
76
76
Capacitive Load
Models by Vout
Maximum Capacitive Load
# For each output
3.3V
2200
5V
1000
12V
170
15V
110
{5V
#
470
{12V
#
100
{15V
#
47
Unit
uF
Input Fuse Selection Guide
24V Input Models
350mA Slow - Blow Type
48V Input Models
135mA Slow - Blow Type
Input Specifications
Parameter
Start Voltage
Under Voltage Shutdown
Reverse Polarity Input Current
Short Circuit Input Power
Input Filter
All Models
Model
24V Input Models
48V Input Models
24V Input Models
48V Input Models
Min.
4.5
8.5
---
---
---
---
Typ.
6
12
---
---
---
---
Max.
8.5
17
8
16
0.5
1500
A
mW
VDC
Unit
Capacitor type
REV:3 2008/10/02
MINMAX
2
MEW1000 Series
Output Specifications
Parameter
Output Voltage Accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Power Protection
Transient Recovery Time
Transient Response Deviation
Temperature Coefficient
Output Short Circuit
25% Load Step Change
Over Line, Load & Temp.
Dual Output, Balanced Loads
Vin=Min. to Max.
Io=25% to 100%
Conditions
Min.
---
---
---
---
---
---
---
120
---
---
---
Continuous
Typ.
{1.0
{1.0
{0.3
{0.5
30
---
---
---
100
{3
{0.01
Max.
{2.0
{2.0
{0.5
{0.75
50
75
15
---
300
{5
{0.02
Unit
%
%
%
%
mV P-P
mV P-P
mV rms
%
uS
%
%/]
General Specifications
Parameter
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Conditions
60 Seconds
Flash Tested for 1 Second
500VDC
100KHz,1V
Min.
1500
1650
1000
---
---
1000
Typ.
---
---
---
250
300
---
Max.
---
---
---
500
---
---
Unit
VDC
VDC
M[
pF
KHz
K Hours
Remote On/Off Control
Parameter
Supply On
Supply Off
Device Standby Input Current
Control Input Current ( on )
Control Input Current ( off )
Control Common
Vin = 0V
Vin = 5.0V
Conditions
Min.
2.9
---
---
---
Typ.
---
1
---
---
Max.
15
3
-1
1
Unit
VDC
mA
mA
mA
Under 0.6 VDC or Open Circuit, drops down to 0VDC by 2mV/]
Referenced to Negative Input
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 bandwidth is 0-20 MHz.
4. These power converters require a minimum output loading to maintain specified regulation.
5. Operation under no-load conditions will not damage these modules; however, they may not meet all specifications listed.
6. All DC/DC converters should be externally fused on the front end for protection.
7. Other input and output voltage may be available, please contact factory.
8. Specifications subject to change without notice.
3
MINMAX
REV:3 2008/10/02
MEW1000 Series
Block Diagram
Single Output
Dual Output
+Vin
+Vo
+Vin
+Vo
Com.
-Vo
-Vin
On/Off
PFM
Isolation
Ref.Amp
-Vin
On/Off
PFM
Isolation
Ref.Amp
-Vo
Input Voltage Transient Rating
150
140
130
120
110
100
Vin ( VDC )
90
80
70
60
50
40
30
20
10
0
10uS
100uS
1mS
10mS
100mS
24VDC Input Models
48VDC Input Models
REV:3 2008/10/02
MINMAX
4
MEW1000 Series
100
90
Efficiency (%)
100
90
80
70
60
50
40
Efficiency (%)
80
70
60
50
40
Low
Nom
Input Voltage (V)
High
Low
Nom
Input Voltage (V)
High
Efficiency vs Input Voltage ( Single Output )
Efficiency vs Input Voltage ( Dual Output )
90
80
Efficiency (%)
70
Efficiency (%)
60
50
40
30
20
10
20
40
60
Load Current(%)
80
100
90
80
70
60
50
40
30
20
10
20
40
60
Load Current(%)
80
100
Efficiency vs Output Load ( Single Output )
Efficiency vs Output Load ( Dual Output )
100
80
Output Power (%)
100LFM
Natural
convection
400LFM
200LFM
60
40
20
0
-40
½
50
60
70
80
]
90
100
110
Ambient Temperature
Derating Curve
5
MINMAX
REV:3 2008/10/02
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