Other Parts Discussed in Thread: LMG5200, DRV8311
We have received this inquiry from our customer for satellite application.
For one of our projects, we are looking for a power stage to drive a small outrunner motor. The motor needs to be controlled in four quadrant operation in a speed range of -15000rpm to 15000rpm, with stable control down to 100rpm (duty cycle ~0.6% - 100%). The powerstage would be controlled by PWM signals generated on a separate MCU. The available bus voltage of the spacecraft is only 5V. For this reason a high switching frequency would be welcome to limit the need for large external motor chokes. We are therefore looking for a power stage capable of 100kHz switching frequency. The power stage with which we are currently experimenting is the MP6543 from manufacturer MPS. At low duty cycles this board does not reach the desired 100kHz. Additionally, the 5V input power might lower the performance of the MOSFET transistors used on this board. We were therefore looking to move on to GaN technology. Between your products I found a TIDA-00909 (https://www.ti.com/lit/ug/tiduce7b/tiduce7b.pdfts=1637924926179&ref_url=https%253A%252F%252Fwww.google.com%252F) which uses GaN technology and supports switching frequencies up to 100kHz. Only, the minimal 12V input power is too high for our application. I was wondering whether this product would still be usable with 12V input power or, if TI has a power stage that complies with the requirements of our project.