Technical information

Easy Automotive Modules
Evaluation Kit EASYKIT AUX DRIVES (FS50R07W1E3_B11A)
Operating Modes and LED status
Application Note 18 AN2012-10
Evaluation Kit EASYKIT AUX DRIVES (FS50R07W1E3_B11A)
Figure 10 Control state machine of the Evaluation Kit.
4.5 Self Test Sequence
A self test is implemented in the uC software, which is performed at each power up cycle of the control
board. The Evaluation Kit will only start the normal operation, when the signals give reasonable values and
the test sequence was performed successfully. The sequence, which is illustrated in Figure 11, has four
major test procedures:
1. ADC value plausibility: Checks the supply voltages of the ADC
2. ADC value limits: Checks the offsets of the sensors and ADC values
3. Low side switching: Switches sequentially all low side IGBTs and checks currents and voltages
4. High side switching: Switches sequentially all high side IGBTs and checks currents and voltages