A Trimming Switch Circuit Without Static Power Consumption

A switching circuit, static power consumption technology, applied in the direction of logic circuit, adjustment of electrical variables, logic circuit coupling/interface using field effect transistors, etc. and other problems, to achieve the effect of high reliability, low power consumption, and simple circuit structure

Active Publication Date: 2020-05-22
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention mainly aims at the problems of large static power consumption, complex structure and poor reliability in the power trimming switch circuit, and proposes a power trimming switch circuit with simple structure, high reliability and no static power consumption

Method used

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  • A Trimming Switch Circuit Without Static Power Consumption
  • A Trimming Switch Circuit Without Static Power Consumption
  • A Trimming Switch Circuit Without Static Power Consumption

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing and specific embodiment, describe technical solution of the present invention in detail:

[0033] The trimming switch circuit provided by the present invention includes a trimming code loading module and a switch control module. The switch control module is connected to an externally given first input signal en and a second input signal enP, and controls the switch control according to the second input signal enP. The module works or shuts down, and generates the first control signal PD, the second control signal PD_N and the timing signal CK according to the first input signal en and the feedback output signal vin to control the modification code loading module; the modification code loading The module works or shuts off according to the first control signal PD and the second control signal PD_N. When the fuse fuse is blown by the control signal v_trim of the fuse fuse, the pulse level of the corresponding output signal VOU...

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Abstract

A trimming switch circuit without static power consumption belongs to the technical field of electronic circuits. It includes a trimming code loading module and a switch control module. The switch control module is connected to an externally given first input signal and a second input signal, and controls the switch control module to work or shut down according to the second input signal. According to the first input signal and The output signal fed back generates the first control signal, the second control signal and the timing signal for controlling the trimming code loading module; the trimming code loading module works or shuts down according to the first control signal and the second control signal, when After the fuse is blown, the pulse level of the corresponding output signal can be obtained, which is the target trimming code value. The invention has a simple structure, adopts a two-stage hysteresis comparator to control the beat output and has high reliability, and has no static power consumption after the circuit adjustment is completed.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits and is mainly applied to constant voltage or current trimming circuits. Background technique [0002] In an integrated circuit system, one or more precise constant current sources or voltage sources are usually required, but due to many reasons such as process deviation and circuit imbalance, precise constant current sources or voltage sources are usually adjusted during the wafer test stage. accomplish. The trimming switch circuit generally adjusts the power supply by controlling the switch tube to obtain the corresponding code value. The more complex the trimming circuit module is, the larger the chip area will be occupied, the power consumption will also increase, and the test cost will also increase accordingly. This cannot meet the low cost requirement. Contents of the invention [0003] The invention mainly aims at the problems of large static power consumption, complex struc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/56H03K19/0185
CPCG05F1/56H03K19/018507
Inventor 李泽宏张成发熊涵风孙河山赵念
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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