Resources Contact Us Home
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
Molded surface of a concrete product
Multiplanar image displays and media formatted to provide 3D imagery without 3D glasses
Triple-action pest control formulation and method
Hand mixer
Fuel cell stack including ejector and blower for anode recirculation and method for controlling the same
Color image forming apparatus with contact control of process units
Methods and systems for use in tracking targets for direction finding systems
  Randomly Featured Patents
Process for the preparation of baccatin III analogs bearing new C2 and C4 functional groups
Reading method and apparatus for an information recording medium and spare area allocation thereof
Connector assembly having an interlocking system
Toss and catch hand puppet
Multiple-tooth drill bit
Integrated modeling through symbolic manipulation
Breakaway tamper evident cover
Light water moderator filled rod for a nuclear reactor
Bracket support assembly
Fuel cell power generation system