US 12,095,254 B2 · Electronic device and temperature detection device thereof

Abstract

An electronic device and a temperature detection device thereof are provided. The temperature detection device includes a differential stage circuit and an output stage circuit. The differential stage circuit includes a first differential end and a second differential end, and includes a cross-coupled transistor element, a first resistor and a second transistor. The cross-coupled transistor element receives a first voltage. The first resistor is coupled between the first differential end and a second voltage, and the first resistor is poly-silicon resistor. The second resistor is coupled between the second differential end and the second voltage, and the second resistor is a silicon carbide diffusion resistor. The output stage circuit generates a driving voltage according to a first control voltage on the first differential end and a second control voltage on the second differential end.

Claims18

Dependent claims

A temperature detection device comprising:

a differential stage circuit having a first differential end and a second differential end and comprising:
a cross-coupled transistor element receiving a first voltage and coupled to the first differential end and the second differential end;
a first resistor coupled between the first differential end and a second voltage, wherein the first resistor is poly-silicon resistor;
and
a second resistor coupled between the second differential end and the second voltage, wherein the second resistor is silicon carbide diffusion resistor;
and
an output stage circuit coupled to the first differential end and the second differential end and generating a driving voltage according to a first control voltage on the first differential end and a second control voltage on the second differential end.

4 more elements

An electronic device with an over-temperature protection mechanism, comprising:

a temperature detection device comprising:
a differential stage circuit having a first differential end and a second differential end and comprising:
a cross-coupled transistor element receiving a first voltage and coupled to the first differential end and the second differential end;
a first resistor coupled between the first differential end and a second voltage, wherein the first resistor is poly-silicon resistor;
and
a second resistor coupled between the second differential end and the second voltage, wherein the second resistor is silicon carbide diffusion resistor;
and
an output stage circuit coupled to the first differential end and the second differential end and generating a driving voltage according to a first control voltage on the first differential end and a second control voltage on the second differential end;
and
a power transistor receiving an operating power and controlled by the driving voltage.

7 more elements

Dependencies are inferred from the claim text.

Electronic device and temperature detection device thereof

Life of this patent

Electronic device and temperature detection device thereof

Life of this patent

Abstract

Claims18