Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Semiconductor device and power supply using the same










Image Number 3 for United States Patent #8120345.

A semiconductor device for control applied to a constant-voltage power supply device includes a digital-analog converter circuit which outputs a reference voltage corresponding to a value of a first register with taking an output voltage of a reference voltage source as a criterial reference voltage, and generates a control signal for driving a power semiconductor device based on an output voltage of an error amplifier which differentially amplifies a feedback voltage obtained by resistive-dividing on an output voltage of the constant-voltage power supply device and the reference voltage. An analog-digital converter circuit which converts the feedback voltage to a digital value with taking the output voltage of the constant-voltage power supply device as a reference voltage is provided, and based on the output, a value of a first register is corrected so as to offset an effect of an error in voltage dividing ratio of a voltage dividing resistor circuit.








 
 
  Recently Added Patents
Defect detection system and method
Encoding method and encoding device, decoding method and decoding device and transcoding method and transcoder for multi-object audio signals
Optical writer and image forming apparatus including same
Food-grade flour from dry fractionated corn germ and collet composition and method for producing same
Light emitting device
Floor relief for dot improvement
Positive electrode active material for nonaqueous electrolyte secondary battery
  Randomly Featured Patents
Metered dose inhaler for albuterol
Sun screen for a motor vehicle
Cellular phone system and mobile communication terminals and base station controlling apparatus in the system and method changing over to different frequency in the system
Electronic animal confinement system
Adapter seal
Surgical clip set
Resuable lid and container construction
End-of-travel focus shift in an optical image scanner
Dual mode firewall
Fence post anchor device