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
Comparison of visual information
Micromachined devices and fabricating the same
Nonvolatile memory device
Method and apparatus for using virtual machine technology for managing parallel communicating applications
(4948
Three-dimensional shape data processing apparatus and three-dimensional shape data processing method
Method and apparatus for connecting to external device
  Randomly Featured Patents
Electroactive material for charge transport
Composite breech plug for black powder guns
Software object, system and method for an automation program with function rules which has multiple uses for various programming tools
Multi-mode communication apparatus and interface for contacting a user
Method and apparatus for learn and related operations in network search engine
Clip-holder instrument for clipping blood vessels
Read amplifier subcircuit for a DRAM memory
Method for treating refinery waste streams in a fluid catalytic cracking unit and an improved catalytic cracking unit for processing refinery waste streams
Active circuits with isolation switches
Process of sequentially dubbing a camera for investigation and review