TDK-Lambda CFE400M Mode D'emploi page 17

CFE400M Handbook
Channel 1
Standby output (optional)
1. Maximum continuous power output 300W.
2. † Peak power of 630W with Ch1: 10ms sawtooth current waveform of 42V at 15A to 5A for 10s followed
by 42V at 1A for 30s minimum. Standby at 5V, 0.1A continuous.
3. See Cooling for customer air below for convection cooled models.
Output Limitations
All outputs are SELV.
Seriesing of outputs is not allowed without further evaluation in end use equipment.
Input Connections: Molex 3 pin header 7A/250V MAX. or Screw terminal input 10A/300V MAX.
Cooling for units with customer supplied air:
The following method must be used for determining the safe operation of PSUs.
The components listed in the following table must not exceed the temperatures given. To determine the
component temperatures the heating tests must be conducted in accordance with the requirements of the
standard in question (60950-1 or 60601-1).
Test requirements include: PSU to be fitted in its end-use equipment and operated under the most adverse
conditions permitted in the end-use equipment handbook/specification and which will result in the highest
temperatures in the PSU. To determine the most adverse conditions consideration should be given to the
end use equipment maximum operating ambient, the PSU loading and input voltage, ventilation, end use
equipment orientation, the position of doors & covers, etc. Temperatures should be monitored using type K
fine wire thermocouples (secured with cyanoacrylate adhesive, or similar) placed on the hottest part of the
component (out of any direct airflow) and the equipment should be run until all temperatures have stabilised.
Circuit Ref.
J1
C7, C8
L1, L2
L9
TX1††, TX3
U2, U7
ASY4-B
ASY4-C
L3, L5
C9
ASY5
RLY1
L6 winding
TX5
XQ18
XL1
ASY7-C ††
ASY4-F ††
C1, C3, C5, C16, C17, C21
(††)
C6, C18 (††)
† The higher temperatures limits in brackets may be used but product life may be reduced.
†† When fitted.
48 38 – 42
5 5
Description
Input connector
X capacitor
Common mode choke winding
Series mode choke winding
Standby transformer winding
Opto-coupler
PFC FET
Boost diode
Boost choke winding
Boost capacitor
Bridge
Relay
Primary resonant choke winding
Main transformer primary winding
High side Channel 1 synchronous rectifier
Channel 1 output choke
Standby switch
Oring FET
Electrolytic capacitors
Electrolytic capacitors
Page 17 of 23
6.25 (15†) 300 (630†)
0.08 0.4
Max. Temperature
(°C) †
105
100
110
120 (130)
110 (130)
100
120
120
110 (140)
83 (105)
125 (130)
100
125 (145)
110 (130)
120 (130)
110 (130)
120
120
82.5 (105)
91 (105)
24085 rev 13, April 2020