Current limiting protecting apparatus and current limiting protecting method

Current limiting protecting apparatus and current limiting protecting method

  • CN 101,373,396 A
  • Filed: 08/24/2007
  • Published: 02/25/2009
  • Est. Priority Date: 08/24/2007
  • Status: Active Application
First Claim
Patent Images

1. current-limiting protection device comprises:

  • One MOS transistor, a wherein source/drain electrode of described MOS transistor is in order to receive one first voltage, and another source/drain electrode is in order to export one second voltage, and grid then in order to receive a gate drive signal, determines the size of conducting electric current in view of the above;

    One current detecting unit in order to detect the conducting current value of described MOS transistor, produces a testing result in view of the above;

    AndOne current-limiting circuit is preset with a plurality of electric current threshold values, and according to one first indicator signal select more described electric current threshold value one of them, and according to selected electric current threshold value and described testing result the two difference and produce described gate drive signal.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×