Making an H Bridge PCB in KiCad from scratch!

[@eduardosausen]

Great video, Josh. I'm designing a didatic Half-Bridge inverter to help in power eletronics lessons of my university... Your video bring me a few good ideas to use in my PCB design, thanks!

[@EV_engineer]

Glad to hear! Thank you

[@EV_engineer]

Let me know if you have any questions or tips on PCB design / KiCad!

[@ysy2305]

Hi Josh, I am a student currently doing PCB design for my 2kW Dual Active Bridge Converter which involves two H-bridges . Can you share you tips on how do you minimize the stray capacitance on switching pole in H- bridge structure in order to minimize dv/dt.

[@EV_engineer]

@@ysy2305 Sure, here are some tips on how to minimize stray capacitance in H-bridge structures for your dual active bridge converter: 1. Keep switching node tracks short and direct. 2. Place decoupling capacitors close to the switching nodes. 3. Use power and ground planes to reduce parasitic capacitances. 4. Place a metal shield between the high-frequency switching nodes and sensitive circuits. 5. Minimize the number of vias in the switching node tracks. 6. Use a low-inductance PCB layout with wide and short copper planes to reduce parasitic inductances. 7. Consider using a differential driver to drive the H-bridge, as this can reduce dv/dt-related EMI issues. These tips can help you minimize the stray capacitance on the switching pole, reducing dv/dt and reducing the potential for EMI issues in your design.

[@wifim821]

@@EV_engineer sounds like a ChatGPT answer xD good job

[@Rudster14]

Great video but how do you decide the resistor values? Like lets say that I want to make an H-bridge to support up to 24v? I saw that you selected the transistor based on amperage and voltage ratings but what about the resistors?

[@AntonioElia-n9j]

Hi Josh, Great video! I'm adopiting your design as H-bridge in my project to control a latching solenoid valve. Just a question: in the photoisolator pins you connect cathode of the LED (2) to GND and anode (1) to the pin INx of ESP32. Is it correct?