Operating Ambient Temperature - TDK-Lambda CPF100F280 Series Instruction Manual

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Fig.6-10 Series Operation in High Output Voltage
6-13. I.O.G. signal (IOG terminal)
Normal or abnormal operation of the power module can be monitored by using the IOG terminal. Output of this
signal monitor is located at secondary side (output side) and is an open collector output.
This signal is LOW when inverter is normally operating and HIGH when inverter stops or when inverter is operating
abnormally. (Maximum sink current is 5mA, maximum applied voltage is 35V)
Ground for the IOG terminal is the-S terminal.
Also note that IOG becomes unstable for following conditions:
･Operation of Over Current Protection (OCP)
･Light load conditions at parallel operation
･Dynamic load operation
6-14. Auxiliary power supply for external signals (AUX terminal)
For AUX terminal, output voltage value is within 10〜14VDC range, maximum output current is 20mA. Ground for
the AUX terminal is –S terminal.
Avoid short circuit of AUX terminal with other terminals as this would lead to power module damage.
6-15. OR-ing function
It has built-in OR-ing function for N+1 redundant application.
In case there is a unit failure in a parallel operating system, the OR-ing function will isolate the failure unit to ensure
continuous power to the system.

6-16. Operating Ambient Temperature

There is no restriction on mounting direction but there should be enough consideration for airflow so that heat does
not accumulate around the power module vicinity. Determine external components configuration and mounting
direction on PCB such that air could flow through the heatsink at forced cooling and conventional cooling.
By maintaining actual baseplate temperature below 100℃, operation is possible.
For details on thermal design, refer to "Thermal Design" of the Power Module Application Notes.
Note) 1. Maximum baseplate temperature is 100℃. For worst case operating condition, verify baseplate temperature
at measurement point indicated in fig. 6-12.
2. There is limitation on baseplate temperature range for as shown in fig.6-13.
All specifications are subject to change without notice.
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Temperature Measuring Point of Baseplate
Fig.6-12 Temperature Measurement Point of Baseplate
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TDK-Lambda
CPF1000F 280-* Series
INSTRUCTION MANUAL
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Fig.6-11 ±Output Series Operation
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