Resources Contact Us Home
Voltage detection type overcurrent protection device for class-D amplifier

Image Number 7 for United States Patent #7701287.

The present invention discloses a voltage detection type overcurrent protection device, which applies to the output stage of a CMOS Class-D audio amplifier. Generally, a Class-D audio amplifier is used to drive a high-load loudspeaker; therefore, it needs a high-current driver. When there is a short circuit in the load, the high current will burn out the driver stage. The present invention detects the output voltage to indirectly monitor whether the output current is too large. Once an overcurrent is detected, the output-stage transistor is turned off to stop high current lest the circuit be burned out.

  Recently Added Patents
Wire guide
Lookup front end packet input processor
Cellulose acylate laminate film, method for producing cellulose acylate laminate film, polarizer and liquid crystal display device
Integrated monitoring in problem management in service desk
Apparatus and method for phase synchronization in radio frequency transmitters
Nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system
Method of requesting CQI reports
  Randomly Featured Patents
Jaw crushing apparatus
Control device for use with an image recording system
Treating polyvinyl chloride resins
Broadband optical fiber laser
Oven-type apparatus and method
Semiconductor memory having redundancy circuit
Method and apparatus for multiplexing a plurality of data connections onto one temporary block flow
System and method for interfacing an application to a distributed transaction coordinator
Optical device and method of manufacturing the same
Biological fluid disposal system