Hi Everybody!
At this time I would like to use two EVAL6498L board for a DC brushed motor, (H-bridge setup).
Selected mosfet is: IRFZ34NPBF.
Selected PWM frequency: 20kHz width the STM32G431 MCU.
The PWM signals are generated on the GPIOs, and I’ve verified that they reach the driver’s HIN and LIN pins. The low-side MOSFETs switch correctly, but the high-side MOSFETs won’t turn on. The bootstrap capacitors are charged to about 12 V (measured directly across the capacitor leads). The control table is the following:
TIM1 ch | Driver Input | Forward | Revers |
1 | A LIN | Forced High | Forced Low |
2 | A HIN | Forced Low | PWM |
3 | B LIN | Forced Low | Forced High |
4 | B HIN | PWM | Forced Low |
https://www.st.com/resource/en/data_brief/eval6498l.pdf
Added R4 and R7 with 10 Ω resistors.
What am I doing wrong?
