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ACPL-337J Reference Manual
Infineon EasyPIM™ 1B IGBT Module EB600-337J Evaluation Board
4.5 Temperature Measurement
The EB600-337J contains the temperature measurement circuit shown in
Figure
15. The voltage drop on the PIM's negative
temperature coefficient (NTC) thermistor is amplified using an ACPL-C87A isolated linear optocoupler and additionally
buffered using an operation amplifier.
Figure 16
shows the typical temperature response of the measurement circuit. Note
that the output voltage range can be adjusted by changing the value of the feedback resistor R4 as well as resistors R31
and R40 in the amplifier circuit.
Figure 15: EB600-337J Isolated Temperature Measurement Circuit
Figure 16: Typical Temperature Measurement Characteristic
Broadcom
ACPL-337J-EB600-RM100
19
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