• OT: intelligent Power Device Meeets Space Challenged BLDC Motor Drive N

    From Jan Panteltje@21:1/5 to All on Mon Oct 14 11:38:51 2024
    Intelligent Power Device Meets Space-Challenged BLDC Motor-Drive Needs
    https://www.electronicdesign.com/technologies/power/article/55234605/electronic-design-intelligent-power-device-meets-space-challenged-bldc-motor-drive-needs
    This IPD has a smaller package, more power, and smarter performance for BLDC motor drivers—what’s not to like?

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

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  • From john larkin@21:1/5 to All on Mon Oct 14 08:23:40 2024
    On Mon, 14 Oct 2024 11:38:51 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Intelligent Power Device Meets Space-Challenged BLDC Motor-Drive Needs
    https://www.electronicdesign.com/technologies/power/article/55234605/electronic-design-intelligent-power-device-meets-space-challenged-bldc-motor-drive-needs
    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.

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  • From Joe Gwinn@21:1/5 to john larkin on Mon Oct 14 13:05:43 2024
    On Mon, 14 Oct 2024 08:23:40 -0700, john larkin <JL@gct.com> wrote:

    On Mon, 14 Oct 2024 11:38:51 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Intelligent Power Device Meets Space-Challenged BLDC Motor-Drive Needs
    https://www.electronicdesign.com/technologies/power/article/55234605/electronic-design-intelligent-power-device-meets-space-challenged-bldc-motor-drive-needs
    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.

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


    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.

    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.

    .<https://www.cnn.com/2024/10/13/science/spacex-starship-test-flight-5-launch/index.html>

    Joe Gwinn

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to joegwinn@comcast.net on Tue Oct 15 03:55:03 2024
    On a sunny day (Mon, 14 Oct 2024 13:05:43 -0400) it happened Joe Gwinn <joegwinn@comcast.net> wrote in <92jqgj1b67ci5fl0050plhb9qj03h1j8mp@4ax.com>:

    On Mon, 14 Oct 2024 08:23:40 -0700, john larkin <JL@gct.com> wrote:

    On Mon, 14 Oct 2024 11:38:51 GMT, Jan Panteltje <alien@comet.invalid> >>wrote:

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

    https://www.electronicdesign.com/technologies/power/article/55234605/electronic-design-intelligent-power-device-meets-space-challenged-bldc-motor-drive-needs
    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.

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


    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.

    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.

    .<https://www.cnn.com/2024/10/13/science/spacex-starship-test-flight-5-launch/index.html>

    I followed the live stream on BBC news
    cnn was just babbling about trump and kamara.
    BBC did say that the next landing test would be with the top module ,
    Sort of a fly to space and back for the astronauts
    Just like an airplane trip.. all hardware re-used.

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