Design of Miniaturized Low Power Consumption Current Sampling Circuit

doi:10.16628/j.cnki.2095-8188.2021.01.009

Abstract

Abstract:

This paper introduced the necessity of current-mode control in switching power and analyzed the disadvantages of the traditional current sampling method.Based on the analysis and calculation of inductive current,a current sampling circuit current design with miniaturization and low power consumption was proposed.Physical verification was carried out according to this theory.A DC/DC power module with input voltage of 5~24 V and output voltage of 3.3 V was designed,which verifies the stability and reliability of the design.

Key words: switching power, current sampling, miniaturization, low power consumption

CLC Number:

TM46

ZHANG Chunya, LIU Song. Design of Miniaturized Low Power Consumption Current Sampling Circuit[J]. LOW VOLTAGE APPARATUS, 2021, 0(1): 54-57.

Figures/Tables 9

References 9

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参数	参数指标	参数	参数指标
输入电压/V	5~24	启动过冲/%	≤5
输出电压/V	3.3±0.2 (双路)	效率/%	≥92
输出电流/A	≤8

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