The second update of schematics

The FOC driver Schematics

currently finished parts

• the Power stage
• the gate driver
• the 6MOSFET
• the MCU

im going to finish the schematics in next session where im gonna work on usb tramsimiters encoder and etc

The Power stage

Overall- the power stage include 24V income ,reverse polarity protection on p-mosfet , and the TVS protection from power surges

24V - im using 24V as the income because the QDD module is gonna be powered 24V so the 5010 bldc can perform up to 6.5Nm by calculation 0.4Nm x 20x reduction x 80% efficenty where 20x reduction can perform to 400rpm which is perfect

The gate driver

DRV8323RS - is used because it is perfect standard of FOC drivers and has its own buck converter which gives us the VCC line 3.3V for logic powering as the reference i used Texas instremnts DRV8323 Datasheet schematics

The 6 MOSFET

CSD18540QB5 - i used a bit different way than in the refence using 6 Rs for each of the Mosfet

the MCU

STM32G431CBT6 - just basic MCU i also added the CAN RX/TX which is gonna wotrk with transmittors work ESP32-S3 for multiple QDD modules

Conclusion : i actually think everuthing is going well because im using datasheets and references from right sources and for now the schematics looks perfect im just gonna finish other parts of schmetics in next session and then start working on PCB which is definetely gonna have 4layers and maybe even 2 sides of components because i need compact but performing well pcb for the QDD module

THE ACTUATOR PCB

This is first day of working on the pcb schematics today as you can see i covered the power line part of the pcb schematics

The main components:

• XT30 - the connector which gets 24V the xt30 pretty small and can easily handle high power income

• SMAJ40A - is a TVS diod which we need to secure the power income from jumps and etc

• AOD4185- is high power P-MOSFET for handling the power

• buck converters ml2596s and ap2112k-3.3- is the step down buck converters we need to power the logical components

Features of the power -

So actually im choosing this components because they can secure and give the perfomance i need in my pcb powering to prevent it from fireing itself and etc

power perfomance for components

• the 40v+ because the income voltage is 24v we need at least 40v to make it safe from peak jumps

• easy to buy im buying all the components from aliexpress and there is a lot of problems to find right components that why it has to be easy to find anywhere so me and other people can easily find the right components

• the qdd module is gonna perform around 20A so i need at least 30A for safe