Resources Contact Us Home
Reducing the natural current limit in a power MOS device by reducing the gate-source voltage

Image Number 3 for United States Patent #5541799.

In accordance with the present invention, an output current limit circuit for protecting a power MOS output device of an integrated circuit from an excessive drain current comprises a power MOS device 110, a means 30 to sense a predetermined trigger current, and a means 20 to reduce a gate-source voltage on MOS output device 110 to a predetermined approximately fixed value. A drain current I.sub.D flows through power MOS device 110 from output terminal 102 in response to the gate-source voltage. A short circuit condition may allow an excessive amount of drain current I.sub.D to flow through output terminal 102. The gate-source voltage is reduced in response to sensing the trigger current. Reducing the gate-source voltage raises a drain-source resistance of MOS device 110 and reduces drain current I.sub.D so that MOS device 110 is not damaged by the short circuit condition.

  Recently Added Patents
Blue box
Semiconductor device including a clock generating circuit for generating an internal signal having a coarse delay line, a fine delay line and a selector circuit
Sitagliptin intermediate compounds, preparation methods and uses thereof
Architecture, system and method for testing resistive type memory
Sensor system
System and method for transferring data in storage controllers
Optical modulation element
  Randomly Featured Patents
Method of making glittering cube-corner retroreflective sheeting
Distribution system, semiconductor memory card, receiving apparatus, computer-readable recording medium and receiving method
Control apparatus for controlling motor drive
Process for printing textile fibre materials in accordance with the ink-jet printing process
Fast and efficient method for deleting very large files from a filesystem
Inhibition of nitric oxide-mediated hypotension and septic shock with iron-containing hemoprotein
Gripping hand for a manipulator
Method of ascertaining the magnitude of forces acting upon rolls in rolling mills
Soft-single ply tissue having very low sidedness
Plural line selector apparatus for enabling selection of one of a plurality of telephone lines