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Synchronous rectification chip suitable for SMC

A technology of synchronous rectification and chip, which is applied in the direction of output power conversion device, cleaning method using gas flow, conversion of AC power input to DC power output, etc. Fixed problems such as difficult replacement, to achieve the effect of convenient deployment and selection, enhanced timeliness, and enhanced user experience

Active Publication Date: 2022-02-08
深圳辰达半导体有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned shortcomings in the prior art, the present invention provides a synchronous rectification chip suitable for SMC, which solves the problem that the installation method of the existing synchronous rectification chip is the same as that of other chips, and it can only be installed by carrying other chips during use. It is deployed by controlling the chip, and the connection is fixed and difficult to replace, which leads to an increase in the cost of early installation and later maintenance of the synchronous rectification chip during use. At the same time, when the synchronous rectification chip is running, the user cannot The equipment judges its required configuration, which brings inconvenience to the installation and use of synchronous rectification chips

Method used

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  • Synchronous rectification chip suitable for SMC
  • Synchronous rectification chip suitable for SMC
  • Synchronous rectification chip suitable for SMC

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A kind of synchronous rectification chip suitable for SMC of the present embodiment, as Figure 1-2As shown, including the synchronous rectification chip main body 1, the top surface of the synchronous rectification chip main body 1 is symmetrically fixedly connected with the limit block 2, the top surface of the synchronous rectification chip main body 1 is connected with a screw 3 through a bearing, and the surface of the screw 3 is threaded The control frame 4 is sleeved, and the control frame 4 is set on the surface of the synchronous rectification chip main body 1 and the limit block 2. The interior of the synchronous rectification chip main body 1 is equidistant and symmetrically fixedly connected with the connecting metal sheet 5, and the synchronous rectification chip main body 1 The four corners of the surface are fixedly connected with fixed blocks 6, the surface of the fixed block 6 is threaded and inserted with screws 7, and the interior of the synchronous re...

Embodiment 2

[0067] A kind of synchronous rectification chip suitable for SMC is deployed with following synchronous rectification circuit, it is characterized in that, comprises:

[0068] The synchronous rectification chip assembly Q1 is the operating program carried inside the synchronous rectification chip;

[0069] The rectifier switch tube Q2 is used to be connected in series to the output circuit of the secondary side of the transformer, and is configured to rectify the induced voltage generated by the secondary side of the transformer;

[0070] The power module Q3 is used to provide operating energy for the synchronous rectification chip assembly Q1:

[0071] Calibration module Q4, used for writing voltage parameters, and outputting a turn-on indication signal with the written voltage parameters as a reference;

[0072] The charging module Q5 is used to configure the induced voltage to generate a charging voltage, and output an inversion signal when the charging voltage reaches the...

Embodiment 3

[0081] A kind of synchronous rectification chip deployment suitable for SMC has following implementation method, it is characterized in that, its steps are as follows:

[0082] S1: Analyze the cause of power loss according to the equipment used;

[0083] S2: According to the calculation formula of electric energy loss, calculate the underestimation of the rated load of power loss;

[0084] S3: Design a synchronous rectification scheme according to the calculation results of the underestimation;

[0085] S4: Choose matching synchronous rectification chip or synchronous rectification chip module for adaptive installation;

[0086] S5: Trial run of newly loaded synchronous rectification chip equipment, analysis of current node fluctuation frequency, evaluation of synchronous rectification chip and compatibility;

[0087] S6: Record the single operation cycle of the synchronous rectification chip, combine with the initial equipment comparative analysis report, and generate a new...

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Abstract

The invention relates to the technical field of power distribution circuits, in particular to a synchronous rectification chip suitable for SMC. The synchronous rectification chip comprises a synchronous rectification chip main body, wherein limiting blocks are symmetrically and fixedly connected to the top surface of the synchronous rectification chip main body, a rotating piece is connected to the top surface of the synchronous rectification chip main body through a bearing, a control frame sleeves the surface of the rotating piece through a thread, the control frame is arranged on the surfaces of the synchronous rectification chip main body and the limiting block in a sleeving mode, connecting metal sheets are symmetrically and fixedly connected to the interior of the synchronous rectification chip main body at equal intervals, and fixing blocks are fixedly connected to the four corners of the surface of the synchronous rectification chip main body. Through the structure, the synchronous rectification chip can be conveniently and manually switched by a user during use, in the opening and closing switching process, a certain dust removal effect is achieved, and dust flows and rubs the synchronous rectification chip to generate static electricity. Meanwhile, the invention provides an operation method convenient and fast to deploy. In the mounting and using process of the synchronous rectification chip, the timeliness during use and mounting is greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of power distribution circuits, in particular to a synchronous rectification chip suitable for SMC. Background technique [0002] Synchronous rectification is a new technology that uses special power MOSFETs with extremely low on-state resistance to replace rectifier diodes to reduce rectification losses. It can greatly improve the efficiency of DC / DC converters and there is no Schottky barrier voltage. The dead zone voltage caused by the power MOSFET is a voltage-controlled device, and its volt-ampere characteristic is linear when it is turned on. When a power MOSFET is used as a rectifier, the gate voltage must be synchronized with the phase of the rectified voltage to complete the rectification function. The development of electronic technology has made the operating voltage of the circuit lower and lower, and the current is higher and higher. Low voltage operation is beneficial to reduce the overall pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/00H02M1/08B08B5/02
CPCH02M7/003H02M1/08B08B5/02Y02B70/10
Inventor 马奕超
Owner 深圳辰达半导体有限公司