MB1000ERW Datasheet, PDF (3/4 Pages) MicroPower Direct, LLC – MB1000ERW

EMC Specifications
Parameter
Radiated Emissions
Conducted Emissions
ESD
RS
EFT
Surge
CS
Voltage Dips
Standard
See Note 1
EN 55022
See Note 1
EN 55022
EN 61000-4-2
EN 61000-4-3
See Note 2 EN 61000-4-4
See Note 3 EN 61000-4-5
EN 61000-4-6
EN 61000-4-29
Typical Connection
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Class A
Class A
Criteria B; ±4 kV Contact
Criteria A; 10V/m
Criteria B; ±2 kV
Criteria B; ±2 kV
Criteria A; 3 Vrms
Criteria B; 0% - 70%
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-1B (or a similar discrete
filter circuit). Contact the factory for more information.
2. TomeettherequirementsofEN61000-4-4(±2kV),externalcomponentsareneeded,
as shown on the typical connection diagram below. Use the MDCFM-1B to meet
EN 61000-4-4 (±4 kV). 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-1B.
Contact the factory for more information.
The diagram above illustrates a typical connection of the MB1000ERW 5. Recommended values for components are:
samples or full technical information on these modules, please
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
Component
MOV
L1
12 VIN
---
---
24 VIN
S14K35
56 µH
48 VIN
S14k60
56 µH
contact the factory.
7. In many applications simply adding input/output capacitors will
enhance the input surge protection and reduce output ripple suf-
ficiently. The input capacitor C1 and output capacitors C5 and C6
fuse is shown in the model chart on page 2.
TVS
SMCJ28A SMCJ48A SMCJ90A
shown in the typical connection diagram above, and board layout
2. An external MOV is recommended on the input to protect the unit in the
C1
680 µF/25V 330 µF/50V 330 µF/100V
drawing below illustrate their connection. In this case, recom-
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
C2
1.0 µF/50V 1.0 µF/50V 1.0 µF/100V
mended capacitor values are:
event of a voltage spike. A recommended value is given in the table at
L2
4.7 µH
4.7 µH
4.7 µH
CIN: 100 µF for 12V input models
right.
C3, C4 1.0 nF/2 kV 1.0 nF/2 kV 1.0 nF/2 kV
10 µF to 47 µF for 24V & 48V input models
4. The output filtering capacitor (C5) is a high frequency, low resistance
electrolytic capacitor. Care must be taken in choosing this capacitor not ^{6. Input noise and surge suppression modules are available for}
COUT: 10 µF for all models
to exceed the capacitive load specification for the unit.The board layout ^{a number of MPD DC/DC power supplies. An MB1000ERW}
illustration below shows a connection for dual output units. Voltage ^{board layout with the MDCFM-1B (EFT suppression) module} 8. The pad spacing between input/output (C3 & C4) in the board
derating of capacitors should be 80% or above.
connected to the input is shown on page 4. For pricing,
layout drawings below should be a minimum of 2 mm.
Typical Board Layout: With External Filter/Surge Components for Single Output Unit
Typical Board Layout: With External Filter/Surge Components for Dual Output Unit
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