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ML348S-05ERW Datasheet(PDF) 3 Page - MicroPower Direct, LLC

No. de pieza ML348S-05ERW
Descripción Electrónicos  Low Cost, 3W SMT 2:1 Input Range DC/DC Converters
Download  4 Pages
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Fabricante Electrónico  MPD [MicroPower Direct, LLC]
Página de inicio  http://www.micropowerdirect.com
Logo MPD - MicroPower Direct, LLC

ML348S-05ERW Datasheet(HTML) 3 Page - MicroPower Direct, LLC

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MicroPower Direct 292 Page Street Ste D Stoughton, MA 02072 TEL: (781) 344-8226 FAX: (781) 344-8481 E-Mail: sales@micropowerdirect.com
www.micropowerdirect.com
MicroPower Direct 292 Page Street Ste D Stoughton, MA 02072 TEL: (781) 344-8226 FAX: (781) 344-8481 E-Mail: sales@micropowerdirect.com
www.micropowerdirect.com
www.micropowerdirect.com
EMC Specifications
Parameter
Standard
Radiated Emissions
See Note 1
EN 55022
Class A
Conducted Emissions
See Note 1
EN 55022
Class A
ESD
EN 61000-4-2
Criteria B; ±4 kV Contact
RS
EN 61000-4-3
Criteria A; 10V/m
EFT
See Note 2
EN 61000-4-4
Criteria B; ±2 kV
Surge
See Note 3
EN 61000-4-5
Criteria B; ±2 kV
CS
EN 61000-4-6
Criteria A; 3 Vrms
Voltage Dips
EN 61000-4-29
Criteria B; 0% - 70%
Typical Connection
The diagram above illustrates a typical connection of the ML300ERW series
for applications that require meeting EMC standards.The units do not require
external components to operate as specified. Some notes on this diagram
(starting with the input circuit) are:
1. It is recommended that an external fuse be used.The recommended fuse
is shown in the model chart on page 2.
2. An external MOV is recommended on the input to protect the unit in the
event of a surge. A recommended value is given in the table at right.
3. An external TVS is recommended on the input to protect the unit in the
event of a voltage spike. A recommended value is given in the table at
right.
4. The output filtering capacitor (C4) is a high frequency, low resistance
electrolytic capacitor. Care must be taken in choosing this capacitor not
to exceed the capacitive load specification for the unit. The board layout
illustration below shows a connection for dual output units.Voltage derating
of capacitors should be 80% or above.
Notes:
1. All units are rated for EN 55022 (CE/RE) class A without external components.
They will meet class B with the addition of the MDCFM-0x (or a similar discrete
filter circuit). Contact the factory for more information.
2. To meet the requirements of EN 61000-4-4 (±2 kV or ±4 kV), external com-
ponents are needed. This can be done discretely, or with the addition of the
MDCFM-0x. Contact the factory for more information.
3. To meet the requirements of EN 61000-4-5 (±2 kV), external components are
needed. This can be done discretely, or with the addition of the MDCFM-0x.
Contact the factory for more information.
Typical Board Layout: With External Filter/Surge Components
5. Recommended values for components are:
Component
12 VIN
24 VIN
48 VIN
MOV
- - -
10D560
10D101
L1
- - -
56 µH
56 µH
TVS
SMCJ28A
SMCJ48A
SMCJ90A
C1
680 µF/25V
120 µF/50V
120 µF/100V
C2
4.7 µF/50V
4.7 µF/50V
4.7 µF/100V
L2
4.7 µH
4.7 µH
C3
4.7 µF/50V
4.7 µF/50V
4.7 µF/100V
C4
10 µF
10 µF
10 µF
6. Input noise and surge suppression modules are available for a
number of MPD DC/DC power supplies.For pricing or full techni-
cal information on these modules please contact the factory.
Typical Connection: With External Filter Module MDCFM-0x
Vin
(VDC)
Input
Capacitor
Vout
(VDC)
Output
Capacitor
12
100 µF
5.0
10 µF
24
10 - 47 µF
12
10 µF
48
10 - 47 µF
15
10 µF
7. In many applications simply adding input/output capacitors will
enhance the input surge pro-
tection and reduce output
ripple sufficiently. The input
capacitor C1 and output cap-
acitor C4 shown in the typical
connection diagram above
(and board layout drawing
below) illustrate their connection. Recommended capacitor values are
given in the table at right.
For 12V and 24V input models, the value of C1 should be a 330 µF/50V. For 48V input models, the value of C1 should be a 330 µF/100V. For more information on the
MDCFM-0x, please contact the factory.


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