Re: OT: intelligent Power Device Meeets Space Challenged BLDC Motor Drive Needs

Oct 14, 2024 Last reply: 1 year ago 1 Replies


Intelligent Power Device Meets Space-Challenged BLDC Motor-Drive Needs


>
formatting link
This IPD has a smaller package, more power, and smarter performance for BLDC motor drivers—what’s not to like?

It uses IGBT technology, which I hadn't seen before in an IC.


The operating voltage range is 50 to 450, which is interesting. It's slow, so it can slam motor windings but probably not PWM for microstepping.


I'm doing a motor driver now, using the TI DRV8962. It's four channels of half-bridge, 4.5 to 65 volts, 10 amps per channel (!!) and it's pretty fast. I'm using a D-sub connector so I'll rate my outputs at 2 amps.


Various D25 suppliers claim 1, 2, or even 5 amps per pin.



>More
>I was also very impressed with SpaceX landing their booter at the launch pad

For sure. I'm impressed that it can lift enough fuel to do the powered landing. I guess there is substantial air friction decel on the way down.

Five amps on a D25 pin? Machined one assumes. Maybe not for long. Or not with company.

It does get lots of aero braking. On the video below, you can see the speed dropping as it falls back to Earth. And it now carries only itself, the payload being far away.

.

formatting link

Joe Gwinn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required