TDK-Lambda CUS200LD Manuel D'installation page 18

4-12. Output Peak Current
CUS200LD has capability of 200W peak power operation, the peak and average current is defined as below:
Ip
Im
0
T
Iav=Ip x D + Im x (1-D)
Operating period at peak output current ( ) is less than 10 seconds for conduction cooling and 5 seconds for
convection cooling, duty is less than 35%.
Average output power and output current is less than the Maximun output power and output current.
Peak output power and output current derating for input voltage, ambient temperature and base plate
temperature (Conduction cooling only) is same as the derating curve of maximum output power and output
current. Please refer to Input Voltage Derating (4-1) and Output Derating (5-3) for details
5. Mounting
5-1. Mounting Method
(1) For both conduction and convection cooling, as consideration for the heat radiation, keep a space more
than 15mm between the power supply and the peripheral parts. Also when using multiple units, keep a space
more than 15mm from each other.
(2) For conduction cooling, Power supply should be mounted on an Aluminum plate or heat sink with bottom
side of the chassis, please refer to the Output Derating of conduction cooling (5-3) for details.
5-2. Mounting Directions
The standard mounting is direction (A). Direction (B), (C),(D) and (E) are also possible.
Never use as mounting direction (F) shown below.
(A) Standard Mounting
TB1
(F) Not Possible
TB1
Iav
convective
airflow
(B)
(C)
TB1
TB1
<Page> 6/9
TDK-Lambda
CUS200LD
INSTRUCTION MANUAL
Ip: Peak output current (A)
Im: Minimum output current (A)
Iav: Average output current (A)
D: Duty cycle, /T (%)
15mm or more 15mm or more
(D)
TB1
TB51
(E)
TB51
TB1