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A real-time detection system for load current

A load current detection and load current technology, applied in the direction of only measuring current, measuring current/voltage, measuring device, etc., can solve the problems of fixation and cannot be adjusted in real time, and achieve the effect of small current and area and fast response speed

Active Publication Date: 2020-06-02
GIANTEC SEMICON LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this gear selection is often relatively fixed and cannot be adjusted in real time.

Method used

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  • A real-time detection system for load current
  • A real-time detection system for load current
  • A real-time detection system for load current

Examples

Experimental program
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Embodiment Construction

[0049] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0050] Such as figure 2 As shown, a load current real-time detection circuit of the present invention includes: a pull-up driver stage gh and a pull-down driver stage gl with adjustable gear positions, a load current detection module, a processor, and an analog-to-digital converter; the pull-up driver stage gh is respectively It is connected with the pull-up switch S1 in the switch system, the input end of the load current detection module and the processor, and one end of the pull-down driver stage gl is connected with the pull-down switch S2 in the circuit of the power tube, the input end of the load current detection module and the processor . The input end of the analog-to-digital converter is connected to the output end of the load current detection module, and the output end of the analog-to-digital ...

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Abstract

The invention discloses a load current real-time detection system, comprising: a switch system with a pull-up drive stage and a pull-down drive stage with adjustable gears, a load current detection module, a processor and an analog-to-digital converter; the load current detection module is respectively connected with the output end of the switch system, the pull-up drive stage and the pull-down drive stage , and is used for detecting the load current of the switch system in real time and transmitting the load current to the analog-to-digital converter; the analog-to-digital converter is connected with the load current detection module, and is used for receiving the load current and converting the load current into a digital signal; the processor is connected to the analog-to-digital converter and is used for receiving the digital signal of the load current outputted by the analog-to-digital converter, and calculating the digital signal to obtain an adjusted gear signal; and the pull-updrive stage or the pull-down drive stage receives the adjustment gear signal output by the processor and performs corresponding execution. The load current real-time detection system utilizes the results obtained by real-time detection to dynamically adjust the output voltage slew rate of the power tube to protect the power tube from being broken down.

Description

technical field [0001] The invention relates to the field of switch systems, in particular to a load current real-time detection system suitable for monitoring output power to realize dynamic adjustment of power tube output voltage slew rate. Background technique [0002] In switching systems with high output power such as Class D power amplifiers or DC-DC voltage converters, efficiency and electromagnetic interference are two performance indicators that require special attention. But the two are contradictory. [0003] If the edge of the output voltage of the switching system is steeper, the energy lost on the switch will be smaller, and the efficiency of the system will naturally be higher. [0004] But the output of the switching system not only contains fundamental frequency energy, but also high frequency carrier energy. High-frequency signals are the culprits that introduce electromagnetic interference. Therefore, the steeper the edge of the output signal, the great...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/32H02M1/44G01R19/00
CPCG01R19/0092H02M1/32H02M1/44
Inventor 李丹潘扬
Owner GIANTEC SEMICON LTD
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