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
Method for producing vinyl acetate monomer
Error scanning in flash memory
System and method of supplying an electrical system with direct current
UV liquid treatment system
IC layout parsing for multiple masks
Aggregating completion messages in a sideband interface
Meat-containing, strip shaped food product and method of making same
  Randomly Featured Patents
Automated system for checking pallets
Cutting device
Motors, and bearings therefor
Two plate buckle folder
Herpes simplex virus type 1 (HSV-1)-derived vector for selectively inhibiting malignant cells and for expressing desired traits in malignant and non-malignant mammalian cells
1,2 Disubstituted benzimidazole derivatives
Canister-compactor assembly
Sample ejection system including temperature control
Optical head for optical recorder/reproducer
Distance measuring apparatus