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Band-gap reference voltage generation method and circuit

A technology of voltage generation circuit and reference voltage, which is applied in the direction of adjusting electric variables, control/regulation systems, instruments, etc., can solve the problems of occupying large chip area and high power consumption, and achieve the goal of reducing circuit power consumption and chip area Effect

Inactive Publication Date: 2016-09-21
TELINK SEMICON SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Given figure 1 In the circuit shown, if the resistance value of the selected resistor R is not large enough, enough current needs to flow through the resistor, resulting in high power consumption
If the resistance value of the selected resistor R is too large, the resistor will occupy a large amount of chip area

Method used

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  • Band-gap reference voltage generation method and circuit
  • Band-gap reference voltage generation method and circuit
  • Band-gap reference voltage generation method and circuit

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0028] In view of the existing reference voltage generation circuit, when the resistance is used to generate a voltage proportional to the positive temperature, if the value of the resistance is small, a large current will flow through the resistance and cause high power consumption. If the value of the resistance is large ,...

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Abstract

The invention relates to the technical field of electronic communications, and discloses a voltage generation circuit and a voltage generation method which are used for generating band-gap reference voltage. The voltage generation circuit comprises a first circuit used for generating first voltage which is in direct proportion to temperature and a second circuit used for generating second voltage which is in inverse proportion to the temperature, wherein the first circuit and the second circuit are connected to enable the first voltage and the second voltage to be superposed, and therefore the band-gap reference voltage is provided; the first circuit is obtained by means of transistors. By means of the band-gap reference voltage generation method and circuit, the band-gap reference voltage is generated, the circuit power consumption can be reduced, and the chip area can be decreased.

Description

technical field [0001] The invention relates to the technical field of electronic communication, in particular to a method and circuit for generating a bandgap reference voltage. Background technique [0002] At present, voltage references or currents that have little relationship with temperature coefficients are proved to be essential in many analog circuits. In the field of circuit design, voltage references that have little relationship with temperature systems are called reference voltages. The existing circuit design idea for generating a reference voltage is usually: add two quantities with opposite temperature coefficients with appropriate weights, then the result will show a zero temperature coefficient. For example, for voltages V1 and V2 that change in opposite directions with temperature changes, we choose α1 and α2 such that This results in a reference voltage V with zero temperature coefficient REF = α 1 V 1 +α 2 V 2 . Among them, V REF For the referen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/565
CPCG05F1/565
Inventor 顾海涛楼文峰凌宇谢循盛文军
Owner TELINK SEMICON SHANGHAI
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