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US 12,683,503 B2Granted
Boost converter
AssigneeRohm Co., Ltd.
InventorAsuma Imamura
Life of this patent
Estimating the term…
Abstract
An inductor is coupled at one end to an input line. A switching transistor and a shunt resistor are coupled in series between the other end of the inductor and a ground line. A rectifier diode is coupled between the other end of the inductor and an output line. A converter controller controls the switching transistor according to at least a voltage drop across the shunt resistor. A first output capacitor has one end coupled to the output line, and the other end coupled to a connection node that couples the switching transistor and the shunt resistor.
Claims7
A boost converter comprising:
- an input line structured to receive an input voltage;
- an output line to be coupled to a load;
- an inductor having one end coupled to the input line;
- a switching transistor and a shunt resistor coupled in series between another end of the inductor and a ground line;
- a rectifier element coupled between the another end of the inductor and the output line;
- a converter controller structured to control the switching transistor according to at least a voltage drop across the shunt resistor;
- a first output capacitor having one end coupled to the output line and another end coupled to a connection node that couples the switching transistor and the shunt resistor;
- and
- a second output capacitor having one end coupled to the output line and another end coupled to the ground line,
- wherein the switching transistor, the shunt resistor, the rectifier element, the first output capacitor, and the second output capacitor are mounted on a printed circuit board, and
- wherein a closed loop formed of the switching transistor, the rectifier element, and the first output capacitor on the printed circuit board has an area that is smaller than an area of a closed loop formed of the switching transistor, the rectifier element, the shunt resistor, and the second output capacitor.
8 more elements
Dependencies are inferred from the claim text.