1 / 9

G. Visser 7/23/2012 MPOD LV P/N 0MPV.8008LI S/N 1788022

G. Visser 7/23/2012 MPOD LV P/N 0MPV.8008LI S/N 1788022 . TROUBLES WITH SPURIOUS “CURRENT LIMIT” IN REMOTE SENSE OPERATION. The first two slides are same as I sent before. Load is 5/3 Ohm resistor, on 100 feet 20AWG cable. Remote sense, ok ≤ 1.9 V. Remote sense, trouble ≥ 1.9 V. ?? !!.

sakura
Download Presentation

G. Visser 7/23/2012 MPOD LV P/N 0MPV.8008LI S/N 1788022

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. G. Visser 7/23/2012 MPOD LV P/N 0MPV.8008LI S/N 1788022 TROUBLES WITH SPURIOUS “CURRENT LIMIT” IN REMOTE SENSE OPERATION The first two slides are same as I sent before. Load is 5/3 Ohm resistor, on 100 feet 20AWG cable.

  2. Remote sense, ok ≤ 1.9 V Remote sense, trouble ≥ 1.9 V ?? !!

  3. Local sense, both cases as above, setpoint tuned for same load & terminal voltages, all seems to work fine, no spurious current limiting.

  4. Here (next slide) is an illustration of open sense connections oddness. I feel it may be related.

  5. At 1.6V setpoint, it’s misbehaving At 3V setpoint, works as expected

  6. Note: all waveforms AC coupled, 10MOhm passive probe Fast, 5/3 to 5/4 Ohm load Transient tests Fast, 5/4 to 5/3 Ohm load

  7. Medium, 5/3 to 5/4 Ohm load Slow, 5/3 to 5/4 Ohm load 200ms/div ! Slow, 5/4 to 5/3 Ohm load 200ms/div Medium, 5/4 to 5/3 Ohm load

  8. Medium, 5/3 to 5/4 Ohm load With 2x470uF Medium, 5/3 to 5/4 Ohm load With 2x470uF @ setpoint 1.5V Really current limiting! Medium, 5/4 to 5/3 Ohm load With 2x470uF Medium, 5/4 to 5/3 Ohm load With 2x470uF @ setpoint 1.5V

  9. ON THIS SLIDE ARE THE WAVEFORMS AT SUPPLY OUTPUT TERMINALS Medium, 5/3 to 5/4 Ohm load With 2x470uF @ setpoint 1.5V Medium, 5/3 to 5/4 Ohm load With 2x470uF Medium, 5/4 to 5/3 Ohm load With 2x470uF @ setpoint 1.5V Medium, 5/4 to 5/3 Ohm load With 2x470uF

More Related