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IRSM516-076 Datasheet(PDF) 10 Page - Infineon Technologies AG |
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IRSM516-076 Datasheet(HTML) 10 Page - Infineon Technologies AG |
10 / 17 page IRSM506-076 IRSM516-076 Series 10 February 10, 2016 Figure 7: Maximum sinusoidal phase current vs PWM switching frequency, no heat sink. Space Vector Modulation, V+=320V, TA=28°C, TJ=98°C The module contains an NTC – connected between COM and the V TH pin – which can be used to monitor the temperature of the module. The NTC is effectively a resistor whose value decreases as the temperature rises. The NTC resistance can be calculated at any temperature as follows: ������������ = ����25���� [����( 1 ������������ − 1 ����25 )] , where ���� 25is 47kΩ and ���� is 4050K An external resistor network is connected to the NTC, the simplest of which is one resistor pulled up to VCC as shown in Figure 3. The VTH vs NTC temperature, TTH curve for this configuration is shown in Figure 8 below. The min, typical and max curves result from the NTC having a ±5% tolerance on its resistance and ±2% tolerance on the B-parameter. Figure 9 shows the thermistor temperature, TTH plotted against the high-side V-phase junction temperature, TJ for a module without a heat sink. It is thus advisable to shut down the module when TTH reaches 125°C. 0 100 200 300 400 500 600 700 800 6 8 10 12 14 16 18 20 Carrier Frequency (kHz) 3-Phase Modulation 2-Phase Modulation |
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