Voltage converter suppressing harmonics
AssigneeSamsung Electronics Co., Ltd.
InventorsJEHYUNG YOON, DONGJIN KEUM
Life of this patent
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Abstract
A voltage converter includes a switch controller controlling operation of first second transistors to generate an output voltage from an input voltage while suppressing harmonics generated by the operation of the first an second transistors, wherein the first transistor includes an embedded snubber including a first damping resistor.
Claims20
A voltage converter comprising:
- an inductor connected between an output node at which an output voltage is apparent and a switch node;
- an output capacitor connected between the output node and a ground node;
- a first transistor connected between an input node receiving an input voltage and the switch node;
- a second transistor connected between the switch node and the ground node;
- and
- a switch controller configured to control the operation of the first transistor and the second transistor,
- wherein the first transistor comprises:
- a first gate terminal connected to the switch controller;
- a first source/drain terminal connected to the input node;
- a second source/drain terminal connected to the switch node;
- a first body terminal connected to the switch node;
- and
- a first substrate terminal connected to the ground node through a first embedded snubber including a first damping resistor.
A voltage converter configured to convert an input voltage to an output voltage using an inductor connected between an input node receiving the input voltage and a switch node, and an output capacitor connected between an output node at which the output voltage is apparent and a ground node, the voltage converter comprising:
- a switch controller configured to control the operation of a first transistor and a second transistor in order to generate the output voltage from the input voltage while suppressing harmonics generated by the operation of the first transistor and the second transistor,
- wherein the first transistor is connected between the switch node and the output node and the second transistor is connected between the switch node and the ground node;
- and
- the first transistor comprises a first gate terminal connected to the switch controller, a first source/drain terminal connected to the output node, a second source/drain terminal connected to the switch node, a first body terminal connected to the switch node, and a first substrate terminal connected to the ground node through a first embedded snubber including a first damping resistor.
A voltage converter comprising:
- an inductor connected between an output node at which an output voltage is apparent and a switch node;
- an output capacitor connected between the output node and a ground node;
- a first transistor connected between an input node receiving an input voltage and the switch node;
- a second transistor connected between the switch node and the ground node;
- and
- a switch controller configured to control the operation of the first transistor and the second transistor,
- wherein the first transistor comprises:
- a first gate terminal connected to the switch controller, a first source/drain terminal connected to the input node, a second source/drain terminal connected to the switch node, a first body terminal connected to the switch node, and a first substrate terminal connected to the ground node through a first embedded snubber including a first damping resistor;
- and
- a P-type substrate connected to the substrate terminal, an N-type well formed in the P-type substrate and connected to the ground node, a P-type body formed in the N-type well and connected to the first body terminal, a gate formed over the P-type body and connected to the first gate terminal, and a first N-type area and a second N-type area formed adjacent to the P-type body and respectively connected to the first source/drain terminal and the second source/drain terminal.
Dependencies are inferred from the claim text.