Unterschiede

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--- professoren_webseiten:rebholz:course_a_power_electronics [2025/05/05 19:03] – [Experiment] hrebholz
+++ professoren_webseiten:rebholz:course_a_power_electronics [2025/06/27 07:17] (aktuell) – [PWM-Signals] hrebholz
@@ Zeile 84: / Zeile 84: @@
 {{ :professoren_webseiten:rebholz:irs2890.png?200 |}}
 Gate drivers are often equipped with additional features. Our driver can detect overcurrents and if necessary, will turn off all MOSFETs for safety. Since overcurrents in a simulation tool will not damage your PC or notebook, you can ignore this feature in the simulation. Pull up the RFE output and connect ITRIP to ground. \\
-Datasheet: {{ :professoren_webseiten:rebholz:infineon-irs2890ds-ds-v01_00-en.pdf |}}
+Datasheet: {{ :professoren_webseiten:rebholz:infineon-irs2890ds-ds-v01_00-en.pdf |}} \\
+Download {{ :professoren_webseiten:rebholz:irs2890ds.zip |}}  the model file for LTSpice.
 <WRAP center round todo 80%>
@@ Zeile 248: / Zeile 249: @@
 <WRAP center round todo 80%>
 **Task 9a**
-Use two oscilloscope probes to visualize the output signals for the high-side and low-side MOSFET. \\
+Use two oscilloscope probes to visualize the output signals of the µC for the high-side and low-side MOSFET. \\
 **Task 9b**
 Measure the minimum and maximum of the adjustable deadtime.\\
@@ Zeile 275: / Zeile 276: @@
 **Task 10a**
 Measure how long it takes for the driver to start doing anything when it receives a high signal and turns on the high-side MOSFET\\
+Attention: To measure the gate source voltage of the high-side MOSFET at differential voltage probe is needed. Do you now why? \\
 **Task 10b**
 How long does it take to bring the gate-source voltage to the desired value?\\
 **Task 10c**
-Determine the same values for turning the MOSFET off and for the low-side MOSFET.\\
+Determine the same values for turning the MOSFET off and for the low-side MOSFET. Do you also need a diffential probe? \\
 **Task 10d**
 Now set the frequency to 30 kHz. Does this make sense? What is your conclusion for the minimal duty cycle?
@@ Zeile 378: / Zeile 380: @@
 Please use the following parameters: \\
 Switching Frequency: 20kHz\\
-Inductor: 100µF \\
+Inductor: 100µH \\
 Capacitor: 4700µF \\
 Load: 25W, 5V, 5A \\
@@ Zeile 503: / Zeile 505: @@
 <WRAP center round todo 80%>
 **Task 19a**
-Setup Simulink for full bridge operation. Measure the PWM Signals for Q1 and Q4 and check if you can apply
+Setup Simulink for full bridge operation. Measure the PWM Signals for Q1 and Q4 and check if you can apply synchronous and phase shifted PWM signals. Please do this with no load connected and without power supply.\\
+**Task 19b**\\
+Set the duty cycle to D = 0.5. Connect the load (DC motor) and the power supply. Consider how you can verify that your full bridge is operating correctly.
 </WRAP>