TDK-Lambda NV350 Bedienungsanleitung Seite 14

NV350 PFC Handbook
Output Parameters
Max Output Power is 350W up to 50°C. Above 50°C, derate by 2.5%/°C.
Output Voltage – 375V +/- 20V
Fan Output – 12V nom at 0.25A max
Customer Air Cooling:
The following method must be used for determining the safe operation of PSUs when customer supplied airflow is
used. The minimum permitted airflow for customer air cooling is 0.5m/s.
For PSUs cooled by customer supplied airflow 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 appropriate standards.
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/assembly 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. Description
L2, L3, L4 Filter/PFC assy: Choke winding
C3, C4 Filter/PFC assy: X capacitors
L1 Filter/PFC assy: Boost choke winding
C1 Filter/PFC assy: Electrolytic capacitor
T1 Filter/PFC assy: Flyback transformer winding
RLY1 Filter/PFC assy: Relay
H2 Boost Heatsink
D4 Bridge Rectifier
Q1/HS2 Fan Regulator
IC1/HS1 Auxiliary FET
C9 Electrolytic capacitor
C10 Electrolytic capacitor
XTH101 Primary IMS measured adjacent to XTH101
See component layout drawings below for locations of components.
Input Connections:
Input screw teminals – 6-32 screws with 8.25mm spacing between screw head centres. Screw head
diameter is 6.6mm
Output Connections:
Molex 4455 series 5 way socket (J20, J21, J22, J23, J24)
Molex 5045 series 2 way header (J10)
Max. Temperature (°C)
100 (105)
Page 14 of 18
155
100
130
60
130
100
95
100
110
115
80
73
17160 issue 8, Jan 2015