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US 2023/0336174 A1Published application
Reference voltage ciruit with temperature compensation
AssigneeInfsitronix Technology Corporation
InventorsYUAN-KAI CHENG, CHUNG-JYE HSU
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Abstract
The present application discloses a reference voltage circuit with temperature compensation, in which a voltage with a positive temperature coefficient is provided by a current source and an impedance device, and in the meanwhile, a voltage with a negative temperature coefficient is provided by a voltage source. Hereby, the reference voltage circuit according to the invention provides a reference voltage with temperature compensation at an output terminal.
Claims18
A reference voltage circuit with temperature compensation, comprising:
- a current source, generating a positive temperature coefficient current;
- an impedance device, coupled to an output terminal, and generating a positive temperature coefficient voltage to said output terminal according to said positive temperature coefficient current;
- and
- a transimpedance device, generating a negative temperature coefficient voltage to said output terminal, and said output terminal outputting a reference voltage by canceling out said positive temperature coefficient voltage and said negative temperature coefficient voltage.
1 more element
A power supply unit, comprising:
- a transformer, having a secondary side;
- a current sensing circuit, coupled to said secondary side;
- and
- a reference voltage circuit, coupled to said current sensing circuit, including:
- a current source, generating a positive temperature coefficient current;
- an impedance device, coupled to an output terminal, and generating a positive temperature coefficient voltage to said output terminal according to said positive temperature coefficient current, and said output terminal coupled to said current sensing circuit;
- and
- a transimpedance device, generating a negative temperature coefficient voltage to said output terminal, and said output terminal outputting a reference voltage to said current sensing circuit by canceling out said positive temperature coefficient voltage and said negative temperature coefficient voltage.
5 more elements
Dependencies are inferred from the claim text.