Hello,
I develop a board with PGA411 and a microcontroller software to read angle and speed. The software was validated with PGA411_EVM.
I test my board: power supplies provided to PGA411 are correct (5 V), SPI communication works correctly and COMAFE is equal to 2.5 V. However, the boost power supply does not start. The voltage Vext remains at 5 V.
I use the factory configuration. The fault pin is high and diagnosis indicates an Exciter Overvoltage Fault (bit EXTOV set to '1' in DEV_STAT1).
Could you help me to understand and correct this problem ?
Thank you in advance.
Alexandre Boyer