GaN Half-Bridge Power Stage: TI LMG5200 - Part 3: Control Deadband with Hercules LaunchPad

RE: GaN Half-Bridge Power Stage: TI LMG5200 - Part 3: Control Deadband with Hercules LaunchPad

Jan Cumps — Sun, 20 Mar 2016 14:09:35 GMT

In two days, I'm going to talk about this project on TI's community day.

The link below has the times and the Web Conference link. You're invited.

I'm going to talk on the TI Community Day March 22nd

RE: GaN Half-Bridge Power Stage: TI LMG5200 - Part 3: Control Deadband with Hercules LaunchPad

Workshopshed — Tue, 23 Feb 2016 06:40:48 GMT

Great post, it made a lot more sense when I realised you were driving a lamp not a motor!

RE: GaN Half-Bridge Power Stage: TI LMG5200 - Part 3: Control Deadband with Hercules LaunchPad

Jan Cumps — Tue, 12 Jan 2016 21:25:40 GMT

... and a last one for good measure.

[View:/resized-image/__size/600x450/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-3bb13681-d119-41c0-90e7-6ca4b0a7eaf2/contentimage_5F00_189043.jpg:600:450]

The setup is completed now. I'm going to write my article...

RE: GaN Half-Bridge Power Stage: TI LMG5200 - Part 3: Control Deadband with Hercules LaunchPad

Jan Cumps — Tue, 12 Jan 2016 20:34:17 GMT

And an action shot:

[View:/resized-image/__size/620x465/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-3bb13681-d119-41c0-90e7-6ca4b0a7eaf2/8228.contentimage_5F00_189042.jpg:620:465]

RE: GaN Half-Bridge Power Stage: TI LMG5200 - Part 3: Control Deadband with Hercules LaunchPad

Jan Cumps — Sun, 10 Jan 2016 14:16:42 GMT

I'm preparing for a blog on the TI forum where I implement the idea that I've worked out here. I've spent yesterday and today to set up a test bed to see if I can create reliable signals with high enough frequency and the right dead time on a Hercules LaunchPad.

[View:https://www.youtube.com/watch?v=pI_RqTOTIcs:330:240]

My first try-outs are promising. I haven't integrated the rotary encoder part, but signal generation works, and the GaN driver reacts as expected.

I had to remove a few SMT components from my evaluation board and was really happy that I bought a 3rd hand with magnifying glass recently.

[View:/resized-image/__size/320x240/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-3bb13681-d119-41c0-90e7-6ca4b0a7eaf2/contentimage_5F00_189034.jpg:320:240]

[View:/resized-image/__size/320x234/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-3bb13681-d119-41c0-90e7-6ca4b0a7eaf2/contentimage_5F00_189035.png:320:234]

RE: GaN Half-Bridge Power Stage: TI LMG5200 - Part 3: Control Deadband with Hercules LaunchPad

DAB — Tue, 29 Sep 2015 20:03:03 GMT

Nice update.

You have to be very careful in tuning devices like this.

If you get some noise on the triggers, you might get that condition where both drivers come on.

Very interesting in how they give you the capability to do this fine tuning capability.

DAB