u/EEEngineer4Ever

1,203 post karma · 193 comment karma · joined Jul 2021

EEEngineer4Ever

Thanks dude

EEEngineer4Ever

Thanks i send him a message but still havent get any response

EEEngineer4Ever

Thanks

EEEngineer4Ever

The ldea is using USB PD feature of USB ports 18650 is good idea but its concept is totally different.

Thanks

EEEngineer4Ever

Thanks

EEEngineer4Ever

PCB is 4 layer , i am not planing to share PCB design files only schematic PDF and gerber files.

Currently i have plans for v2 model.

EEEngineer4Ever

Wow perfect. Thanks

EEEngineer4Ever

Himm I am planning to use exactly same layout of TPS55289 EVB thanks for pointing out this.

Hardware mechanism to power-cycle the TPS55289 great recommendation I will add discrite pins to Disable and Enable TPS55289s when I2S somehow locked.

Thanks Friend.

EEEngineer4Ever
EEEngineer4Ever
EEEngineer4Ever
EEEngineer4Ever
EEEngineer4Ever
EEEngineer4Ever
EEEngineer4Ever
EEEngineer4Ever
EEEngineer4Ever
EEEngineer4Ever
EEEngineer4Ever
EEEngineer4Ever

under the aliminuum base

EEEngineer4Ever

The onboard display is actually a secondary screen you can control everything through the Python interface on your computer as well.

For overcurrent events, there are two approaches:

  1. The rail trips off and you need to manually re enable it, or
  2. You can use the TPS55289’s built in constant current mode, where the device automatically reduces the output voltage instead of shutting down.

During long duration operation, the temperature does not rise excessively because the TPS55289 is highly efficient. The heat from the DC DC converters and the LDOs spreads into the aluminum base, and thanks to the large surface area the system reaches a steady state around 35–40 degrees at maximum load.

All LDOs and DC DC converters also have their own internal thermal shutdown mechanisms, so if anything ever gets too hot, they safely shut themselves down independently of the MCU.

https://preview.redd.it/o5vhrmul8f3g1.png?width=801&format=png&auto=webp&s=7efbd2924b979c395cfca597012b30e5e804b3ca

EEEngineer4Ever
EEEngineer4Ever

Yeah all components will down onto PCB.

EEEngineer4Ever

I actually can’t predict how much demand there is for outputs above 22 V. If there is significant demand, I might solve the issue by using a different module for Adjustable Channel 2.

EEEngineer4Ever

Yeah me too 32V was the only option i chosed Xl6019 but because of EMI EMC issues i decided to swicth to TPS55289. Thanks for your commend