Author Topic: WiFi RGB LED Driver  (Read 1592 times)

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Offline BootalitoTopic starter

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WiFi RGB LED Driver
« on: July 18, 2017, 08:15:40 pm »
I'm designing a RGB LED Driver PCB.    I'd love to have someone with more experience than myself take a quick look for glaring mistakes.

Functional requirements:
1. robust for rough installations (incorrect wiring, rough handling, ESD, etc)
2. Robust for back EMF due to long wire rungs
3. commonly available parts
4. Powerful.  Currently the limiting factor is the rating of the 10A terminals (using some quick disconnects http://bit.ly/2uwTUhZ)
 

Offline thm_w

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Re: WiFi RGB LED Driver
« Reply #1 on: July 19, 2017, 09:55:36 pm »
- Whats the purpose of the bidirectional TVS on GPIO13, 14 15? Since the gate driving circuitry is on the PCB, I don't see what is being protected here. It is also bi-directional, you'd typically use unidirectional. Wouldn't it be more benefit on the other side of the FET?
- Do you have enough heatsinking to handle 10A, it looks like with those FETs it will be over 5W per device.
- If you are clipping POT and GPIO0, then the 3v3 rail may need some clamping.
- Is gpio0 serial?
- this thread could go in the project section.
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