+Vo
PFM
Isolation
Ref.Amp
+Vin
-Vin
-Vo
On/Off
Block Diagram
Wide Range
2:1
Low Profile
Low Cost
$
Remote on/off
I/O Isolation
Low Noise
MCW1000-Series power modules are low-profile
dc-dc converters that operate over input voltage ranges of
4.5-9VDC, 9-18VDC, 18-36VDC and 36-75VDC and provide
precisely regulated output voltages of 3.3V, 5V, 12V.
The -40] to +65] operating temperature range makes it ideal
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, 60mV output
ripple, built-in filtering for both input and output minimizes the need
for external filtering.
Low Ripple and Noise
External ON/OFF-Control
MTBF > 1,000,000 Hours
Short Circuit Protection
SMT Technology
Industry Standard Pinout
I/O Isolation 1000VDC
2:1 Input Range
High Efficiency up to 80%
Key Features
Single Outputs
2 Watts 2 :1 Wide Input Range DC/DC Converters
TOTAL POWER INT'L MCW1000 Series
79
53
42
167
12
MCW1043
73
57
100
400
5
MCW1042
71
8
49
125
500
3.3
48
( 36 ~ 75 )
MCW1041
81
103
42
167
12
MCW1033
77
109
100
400
5
MCW1032
72
10
96
125
500
3.3
24
( 18 ~ 36 )
MCW1031
80
209
42
167
12
MCW1023
77
217
100
400
5
MCW1022
73
20
184
125
500
3.3
12
( 9 ~ 18 )
MCW1021
75
534
42
167
12
MCW1013
73
548
100
400
5
MCW1012
70
40
471
125
500
3.3
5
( 4.5 ~ 9 )
MCW1011
% (Typ.)
mA (Typ.)
mA (Typ.)
mA
mA
VDC
VDC
@Max. Load
@No Load
@Max. Load
Min.
Max.
Efficiency
Input Current
Output Current
Output
Voltage
Input
Voltage
Model
Number
Model Selection Guide
Free-Air Convection
Cooling
%
95
---
Humidity
]
+105
-55
Storage Temperature
]
+90
-40
Case
Operating Temperature
]
+65
-40
Ambient
Operating Temperature
Unit
Max.
Min.
Conditions
Parameter
Environmental Specifications
Exceeding these values can damage the module. These are not continuous
operating ratings.
mW
1,800
---
Internal Power Dissipation
]
260
---
Lead Temperature (1.5mm from case for 10 Sec.)
VDC
100
-0.7
48VDC Input Models
VDC
50
-0.7
24VDC Input Models
VDC
25
-0.7
12VDC Input Models
VDC
15
-0.7
5VDC Input Models
Input Surge Voltage
( 1000 mS )
Unit
Max.
Min.
Parameter
Note :
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 50%
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 devices; however they may not
meet all listed specifications.
6. All DC/DC converters should be externally fused at
the front end for protection.
7. Other input and output voltage may be available,
please contact factory.
8. Specifications subject to change without notice.
Absolute Maximum Ratings
MCW1000 Series
K Hours
---
---
1000
MIL-HDBK-217F @ 25], Ground Benign
MTBF
KHz
650
300
100
Switching Frequency
pF
120
65
---
100KHz,1V
Isolation Capacitance
M[
---
---
1000
500VDC
Isolation Resistance
VDC
---
---
1100
Flash Tested for 1 Second
Isolation Test Voltage
VDC
---
---
1000
60 Seconds
Isolation Voltage
Unit
Max.
Typ.
Min.
Conditions
Parameter
General Specifications
Continuous
Output Short Circuit
%/]
{0.02
{0.01
---
Temperature Coefficient
%
{5
{3
---
Transient Response Deviation
uS
300
100
---
25% Load Step Change
Transient Recovery Time
%
---
---
120
Over Power Protection
mV rms.
15
---
---
Ripple & Noise (20MHz)
mV P-P
75
---
---
Over Line,Load & Temp
Ripple & Noise (20MHz)
mV P-P
50
30
---
Ripple & Noise (20MHz)
%
{0.75
{0.5
---
Io=25% to 100%
Load Regulation
%
{0.5
{0.3
---
Vin=Min. to Max.
Line Regulation
%
{2
{1
---
Output Voltage Accuracy
Unit
Max.
Typ.
Min.
Conditions
Parameter
Output Specifications
Capacitor type
Input Filter
mW
1500
---
---
Short Circuit Input Power
A
1
---
---
All Models
Reverse Polarity Input Current
34
22
---
48V Input Models
17
11
---
24V Input Models
8.5
6.5
---
12V Input Models
4
3.5
---
5V Input Models
Under Voltage Shortdown
36
24
16
48V Input Models
18
12
8
24V Input Models
9
7
4.5
12V Input Models
VDC
4.5
4
3.5
5V Input Models
Start Voltage
Unit
Max.
Typ.
Min.
Model
Parameter
Input Specifications
Referenced to Negative Input
Control Common
mA
1
---
---
Control Input Current ( off )
mA
-0.4
---
---
Control Input Current ( on )
mA
0.2
0.1
---
Device Standby Input Current
VDC
15
---
2.7
Supply Off
under 1VDC or open circuit
Supply On
Unit
Max.
Typ.
Min.
Conditions
Parameter
Remote On/Off Control
MCW1000 Series
Note: # For each output .
uF
170
170
1000
2200
Maximum Capacitive Load
Unit
12V
5V
3.3V
Models by Vout
Capacitive Load
135mA Slow - Blow Type
350mA Slow - Blow Type
700mA Slow - Blow Type
1500mA Slow - Blow Type
48V Input Models
24V Input Models
12V Input Models
5V Input Models
Input Fuse Selection Guide
Input Voltage Transient Rating
MCW1000 Series
Derating Curve
]
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 ( Single Output )
Efficiency vs Input Voltage ( Single Output )
Load Current (%)
Efficiency(%)
20
30
40
50
60
70
80
90
10
20
40
60
80
100
Input Voltage (V)
Efficiency(%)
Low
High
Nom
20
30
40
50
60
70
80
90
MCW1000 Series
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 0.47uF 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 MCW1000 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.
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 < 1.0[ at 100
KHz) capacitor of a 8.2uF for the 5V input devices, a 3.3uF for
the 12V input devices and a 1.5uF for the 24V and 48V
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 3.3uF
capacitors at the output.
MCW1000 Series
+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
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.
MCW1000 Series
DUT
Position of air velocity
probe and thermocouple
50mm / 2in
Air Flow
15mm / 0.6in
Units are encapsulated in a low thermal resistance molding compound which has excellent chemical resistance and electrical
properties in high humidity environment and over a wide operating temperature range.
The encapsulant and outer shell of the unit have UL94V-0 ratings. The leads are tin plated for better soldering.
NC: No Connection
UL94V-0
:
Flammability
No function
8
-Vout
7
4.8g
:
Weight
+Vout
6
No function
5
Non-Conductive Black Plastic
:
Case Material
Remote ON/OFF
3
+Vin(VCC)
2
0.86*0.37*0.44inches
-Vin(GND)
1
21.8*9.3*11.1mm
:
Case Size
Single Output
Pin
Physical Characteristics
Pin Connections
{0.002
{0.05
Pin
.XXX{0.01
.XX{0.25
.XX{0.01
.X{0.25
Inches
Millimeters
Tolerance
Single Output
0.01
(0.25)
0.12 (3.0)
0.36
(9.2)
1
2
3
6
7
8
0.86 (21.8)
0.02
(0.5)
0.02
(0.5)
0.10
(2.54)
0.08
(2.0)
0.44
(11.2)
0.13
(3.2)
0.20
(5.08)
5
Bottom
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
Mechanical Data
MCW1000 Series
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