MCW1000 Series
2W, Wide Input Range SIP, Single Output DC/DC Converters
Key Features
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High Efficiency up to 81%
1000VDC Isolation
MTBF > 1,000,000 Hours
2:1 Wide Input Range
Low Cost
Remote On/Off Control
Low Ripple and Noise
Temperature Performance -40] to +85]
UL 94V-0 Package Material
Internal SMD Construction
Minmax's MCW1000-Series power modules are low-profile dc-dc
converters that operate over input voltage ranges of 4.5-9VDC,
1000
VDC
9-18VDC, 18-36VDC and 36-75VDC which provide precisely regulated
single output voltages of 3.3V, 5V and 12VDC.
The -40] to +85] operating temperature range makes it ideal for
data communication equipments, mobile battery driven equipments,
Low Noise
distributed power systems, telecommunication equipments, mixed
I/O Isolation
Remote on/off
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 81%, continuous short circuit, 30mV output ripple,
2:1
built-in filtering for both input and output minimize the need for external
filtering.
Low Profile
Low Cost
Wide Range
Block Diagram
+Vo
+Vin
-Vo
-Vin
On/Off
1
PFM
Isolation
MINMAX
Ref.Amp
REV:0 2005/04
MCW1000 Series
Model Selection Guide
Model
Number
MCW1011
MCW1012
MCW1013
MCW1021
MCW1022
MCW1023
MCW1031
MCW1032
MCW1033
MCW1041
MCW1042
MCW1043
Input
Voltage
Output
Voltage
VDC
VDC
3.3
5
12
3.3
5
12
3.3
5
12
3.3
5
12
5
( 4.5 ~ 9 )
12
( 9 ~ 18 )
24
( 18 ~ 36 )
48
( 36 ~ 75 )
Output Current
Max.
mA
500
400
167
500
400
167
500
400
167
500
400
167
Input Current
Min.
mA
125
100
42
125
100
42
125
100
42
125
100
42
Absolute Maximum Ratings
Min.
-0.7
-0.7
-0.7
-0.7
-----
Max.
15
25
50
100
260
3500
Unit
VDC
VDC
VDC
VDC
]
mW
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
mA (Typ.)
40
400
20
300
10
200
8
500
@Max. Load
% (Typ.)
70
73
75
73
77
80
72
77
81
71
73
79
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.
Environmental Specifications
REV:0 2005/04
@No Load
mA (Typ.)
Efficiency
Notes :
Parameter
5VDC Input Models
12VDC Input Models
Input Surge Voltage
( 1000 mS )
24VDC Input Models
48VDC Input Models
Lead Temperature (1.5mm from case for 10 Sec.)
Internal Power Dissipation
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
@Max. Load
mA (Typ.)
471
548
534
184
217
209
96
109
103
49
57
53
Reflected
Ripple
Current
Conditions
Ambient
Case
Min.
Max.
-40
+85
-40
+90
-55
+105
--95
Free-Air Convection
Unit
]
]
]
%
MINMAX
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.
2
MCW1000 Series
Input Specifications
Parameter
Start Voltage
Under Voltage Shutdown
Model
Min.
Max.
4.5
5V Input Models
3.5
4
12V Input Models
4.5
7
9
24V Input Models
8
12
18
Unit
48V Input Models
16
24
36
5V Input Models
---
3.5
4
12V Input Models
---
6.5
8.5
24V Input Models
---
11
17
48V Input Models
---
22
34
---
---
1
A
---
---
1500
mW
Reverse Polarity Input Current
Short Circuit Input Power
Typ.
All Models
Input Filter
VDC
Capacitor type
Output Specifications
Parameter
Conditions
Output Voltage Accuracy
Min.
Typ.
Max.
---
{1
{2
Unit
%
Line Regulation
Vin=Min. to Max.
---
{0.3
{0.5
%
Load Regulation
Io=25% to 100%
---
{0.5
{0.75
%
---
30
50
mV P-P
Over Line, Load & Temp.
---
---
75
mV P-P
Ripple & Noise (20MHz)
---
---
15
mV rms
Over Power Protection
120
---
---
%
Transient Recovery Time
---
100
300
uS
---
{3
{5
%
---
{0.01
{0.02
%/]
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Transient Response Deviation
25% Load Step Change
Temperature Coefficient
Output Short Circuit
Continuous
General Specifications
Parameter
Conditions
Min.
Typ.
Max.
Unit
Isolation Voltage Rated
60 Seconds
1000
---
---
VDC
Flash Tested for 1 Second
1100
---
---
VDC
Isolation Resistance
Isolation Voltage Test
500VDC
1000
---
---
M[
Isolation Capacitance
100KHz,1V
---
65
120
pF
100
300
650
KHz
1000
---
---
K Hours
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Remote On/Off Control
Parameter
Supply On
Conditions
Min.
Typ.
Max.
Unit
Under 0.6 VDC or Open Circuit, drops down to 0VDC by 2mV/]
Supply Off
Device Standby Input Current
2.7
---
15
VDC
---
0.1
0.2
mA
Control Input Current ( on )
Vin-RC = 0V
---
---
-0.4
mA
Control Input Current ( off )
Vin-RC = 5.0V
---
---
1
mA
Control Common
3
Referenced to Negative Input
MINMAX
REV:0 2005/04
MCW1000 Series
Capacitive Load
Models by Vout
Maximum Capacitive Load
3.3V
5V
12V
Unit
2200
1000
170
uF
Input Fuse Selection Guide
5V Input Models
12V Input Models
24V Input Models
48V Input Models
1500mA Slow - Blow Type
700mA Slow - Blow Type
350mA Slow - Blow Type
135mA Slow - Blow Type
Input Voltage Transient Rating
150
140
130
120
48VDC Input Models
110
Vin ( VDC )
100
90
80
70
24VDC Input Models
60
50
12VDC Input Models
40
30
20
5VDC Input Models
10
0
10uS
REV:0 2005/04
100uS
1mS
MINMAX
10mS
100mS
4
MCW1000 Series
90
90
80
Efficiency(%)
Efficiency (%)
80
70
70
60
50
60
40
50
Low
Nom
30
High
10
20
40
60
80
100
Load Current(%)
Input Voltage (V)
Efficiency vs Input Voltage
Efficiency vs Output Load
100
100LFM
Output Power (%)
80
400LFM
200LFM
60
Natural
convection
40
20
0
〜
-40
50
60
70
80
Ambient Temperature
90
100
110
]
Derating Curve
5
MINMAX
REV:0 2005/04
MCW1000 Series
Test Configurations
Maximum Capacitive Load
Input Reflected-Ripple Current Test Setup
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 sheet.
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.
To Oscilloscope
+
Battery
+
+Vin
Lin
Current
Probe
Cin
-Vin
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.
+Out
DC / DC
Converter
Overcurrent Protection
Load
-Out
Input Source Impedance
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.
+Vin
+Out
Single Output
DC / DC
Converter
-Vin
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.
Copper Strip
Cout
Scope
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.
Resistive
Load
-Out
+
Design & Feature Considerations
DC Power
Source
Remote On/Off
+
+Out
DC / DC
Converter
Load
Cin
-
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 2.7V to 15V.
A logic high is under 0.6 VDC or open circuit, drops down
to 0VDC by 2mV/]
The maximum sink current at on/off terminal during a logic
low is 1 mA.
The maximum allowable leakage current of the switch at
on/off terminal (under 0.6VDC or open circuit) is -0.4mA.
-Vin
-Out
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.
+
+Vin
MINMAX
+Out
Single Output
DC / DC
Converter
DC Power
Source
-
REV:0 2005/04
+Vin
-Vin
Cout
Load
-Out
6
MCW1000 Series
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 90°C.
The derating curves are determined from measurements
obtained in an experimental apparatus.
Position of air velocity
probe and thermocouple
15mm / 0.6in
7
50mm / 2in
Air Flow
DUT
MINMAX
REV:0 2005/04
MCW1000 Series
Mechanical Dimensions
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
5.08 [0.200]
3
5
6
0.5[0.02]
Tolerance
Pin
7
9.2 [0.36]
2
8
3.0 [0.12]
1
2.54[0.100]
0.25[0.01]
2.0[0.08]
4.0[0.16]
0.5[0.02]
11.2[0.44]
21.8 [0.86]
Millimeters
Inches
X.X{0.25
X.XX{0.01
X.XX{0.13
X.XXX{0.005
{0.05
{0.002
Pin Connections
Physical Characteristics
Pin
Function
1
-Vin
2
+Vin
3
Remote On/Off
5
NC
6
+Vout
7
-Vout
8
NC
21.8*9.2*11.2mm
Case Size
:
Case Material
:
Non-Conductive Black Plastic
Weight
:
4.8g
Flammability
:
UL94V-0
0.86*0.36*0.44inches
NC: No Connection
The MCW1000 converter is encapsulated in a low thermal resistance molding compound that has excellent resistance/electrical
characteristics over a wide temperature range or in high humidity environments.
The encapsulant and unit case are both rated to UL 94V-0 flammability specifications.
Leads are tin plated for improved solderability.
REV:0 2005/04
MINMAX
8