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Switching Current Integrator for High Power Density Buck Switching Converter

A switching converter, high power density technology, used in electronic switches, high-efficiency power electronic conversion, electrical components, etc., can solve problems such as poor transient response, reduce chip area, and improve low-frequency gain.

Active Publication Date: 2022-05-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention proposes a switching current integrator circuit, which has the characteristics of simple structure, introducing adaptive zero point and dynamically compensating with the switching frequency so as to improve the high-frequency transient characteristics, and solves the problem that the traditional error amplifier needs to introduce off-chip compensation and the bandwidth of the Buck converter Fixed poor transient response at high frequencies

Method used

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  • Switching Current Integrator for High Power Density Buck Switching Converter
  • Switching Current Integrator for High Power Density Buck Switching Converter
  • Switching Current Integrator for High Power Density Buck Switching Converter

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Embodiment Construction

[0040] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings:

[0041] The specific circuit of the present invention for the switching current integrator of the high power density step-down switching converter is as follows: image 3 shown, including the first capacitor C 1 , the second capacitor C 2 , the third capacitor C 3 , the fourth capacitor C 4 , the first transmission gate TG 1 , the second transmission gate TG 2 , the third transmission gate TG 3 , the fourth transmission gate TG 4 , the first NMOS transistor MN1, the second NMOS transistor MN2, the third NMOS transistor MN3, the fourth NMOS transistor MN4, the fifth NMOS transistor MN5, the sixth NMOS transistor MN6, the seventh NMOS transistor MN7, the eighth NMOS transistor MN8, the Nine NMOS transistors MN9, tenth NMOS transistor MN10, eleventh NMOS transistor MN11, twelfth NMOS transistor MN12, thirteenth NMOS transistor MN13, fourteenth NM...

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Abstract

The invention discloses a switching current integrator circuit for a high power density step-down switch converter, which comprises four capacitors, four transmission gates, fourteen NMOS tubes, fifteen PMOS tubes and a current source. These components are connected to each other to form a switching current circuit, so that the transfer function is equivalent to an integrator, which improves the low-frequency gain, and introduces an adaptive zero point to keep the Buck loop stable at different switching frequencies, reducing the chip area and solving the problem. The traditional error amplifier needs to introduce off-chip compensation, and the buck converter has a problem of poor transient response when the bandwidth is fixed at high frequencies.

Description

technical field [0001] The invention belongs to the field of integrated circuits and power converters, and in particular relates to a switching current integrator applied to a high-power density step-down switching converter. Background technique [0002] As a part of PMIC, DC-DC converters have been widely used in portable electronic products, computers, communications and automotive electronics due to their high conversion efficiency. In recent years, miniaturized, lightweight and portable electronic products are more popular among the public. However, there is a very important problem among these electronic devices: low battery utilization and poor battery life. In order to solve this problem, high power density DC-DC converter chips will naturally become the direction of future development. Buck-type DC-DC converters with a constant on-time (COT) structure are the main research hotspots in recent years. They have the characteristics of fast response and high efficiency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/687
CPCH03K17/687Y02B70/10
Inventor 甄少伟易子皓罗攀方舟张波
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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