Output Derating - TDK-Lambda CUS100MB Series Instruction Manual

Instructions for using the power supply in customer's system
1. If the output of power supply is connected to FG in the application, the withstand voltage test between input and output (FG) should be tested
at 2kVAC.
2. If there is external noise filter and Y-caps connected at the input and output of the power supply, the voltage distribution between primary and
secondary circuit will be changed during the withstand voltage test, and may cause test fail. In this case, please contact TDK-Lambda for
the technical support and instructions.
5. Mounting
5-1. Mounting Directions
5-1-1. Mounting directions for models (except CUS100MB/A)
Recommended standard mounting direction is (A). Mounting direction (B)-(E) are also possible.
(A) Standard mounting
CN1(INPUT)
5-1-2. Mounting directions for CUS100MB/A
Recommended standard mounting direction is (A). Mounting direction (B)-(E) are also possible.
Please use the mounting holes on bottom side of the power supply, do not use the side of the chassis for power supply
mounting.
(A) Standard mounting
CN1

5-2. Output Derating

5-2-1. Output derating for CUS100MB and CUS100MB/B
Make sure that the specified temperature range is maintained.
(1) 5V model
Convection Cooling: Mounting A,B,C,D
& Force Air Cooling: Mounting A,B,C,D,E
Ta (°C)
-20 - +40
50
60
70
(B) (C)
CN1
CN1
(B)
CN1
CN1
Load (%)
100
90
75
50
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(D)
CN1
(C) (D)
CN1
CN1
Convection Cooling: Mounting E
Ta (°C) Load (%)
-20 - +35
45
55
65
TDK-Lambda
CUS100MB
INSTRUCTION MANUAL
(E)
CN1
(E)
100
90
75
50