Thursday, November 22, 2012

ST Proposes LDO Regulator with Distributed Output Stage

ST patent application US20120286135 "Low drop-out regulator with distributed output network" by Jingfeng Gong, Yann Desprez-Le-Goarant (Singapore), proposed a regulator for a pixel array with distributed output transistor that "improves localized heat dissipation by spatially-distributing transistors, and reduces IR drop across an output track by providing a consistent output voltage at each output node located along the output track." (I'd say with improved consistency, not exactly the same voltages).

The prior art is shown on Fig. 1A:


The proposed solution is shown on Fig. 2:

5 comments:

  1. Do you have the link? I cannot find it in any of the patent databases.

    ReplyDelete
    Replies
    1. I've added USPTO link in the post. Also, one can find it on freepatentsonline.com:

      http://www.freepatentsonline.com/y2012/0286135.html

      Delete
  2. Does each row of pixel have it's own regulator also? Does anyone know? surely it wont be area efficient if it does.

    ReplyDelete
    Replies
    1. There is one regulator with one control loop. Only the output stage is distributed.

      Delete
  3. It looks same as the LDOs used in memories. There also, they have distributed output stage sitting on top of memory array and the error amplifier sits at one corner.

    ReplyDelete

All comments are moderated to avoid spam.