Circuit for carrying out beam splitting protection on power supply input and output

Abstract

A circuit for carrying out beam splitting protection on power supply input and output is disclosed. A power supply connection line is divided into several beams so as to carry out current sharing andcurrent limiting control. The circuit comprises a beam splitting power supply connector possessing several pairs of contact points. A first beam splitting power supply line is connected to the sourceelectrode of a first NMOS pipe. The drain electrode of the first NMOS pipe is connected to a total power supply end. The source electrode of the first NMOS pipe is connected to the source electrode ofthe second NMOS pipe. The channel area of the first NMOS pipe is several times (n times) that of the second NMOS pipe. The drain electrode of the second NMOS pipe is a first beam splitting current sampling signal node. A second beam splitting power supply line is connected to the source electrode of a fourth NMOS pipe. The drain electrode of the fourth NMOS pipe is connected to the total power supply end. The source electrode of the fourth NMOS pipe is connected to the source electrode of a fifth NMOS pipe. The channel area of the fourth NMOS pipe is several times (n times) that of the fifthNMOS pipe. The drain electrode of the fifth NMOS pipe is a second beam splitting current sampling signal node. The grid electrode of the first NMOS pipe, the grid electrode of the second NMOS pipe, the grid electrode of the fourth NMOS pipe and the grid electrode of the fifth NMOS pipe are connected to a switch control circuit.

Description

technical field [0001] The present invention relates to power supply management and circuit protection technology, in particular to a circuit for beam splitting protection of power supply input and output. Under the limitation of PLS ​​and in the Type-C / USB environment, according to the split current and total current limit, it can reliably receive and receive higher power, and solve the problems of safety restrictions and reliable connection. Background technique [0002] The power supply provides electrical energy to the electronic devices in the circuit, but the power supply adopts a single path, that is, a power supply is only treated as a line and contact. The inventors of the present invention have found that only 8A·60V voltage can be transmitted under the limitation of PLS. If it is decomposed into different connections, each connection needs to output only 8A. Similarly, Type-C / USB defines 4 pairs of power connection lines, and each connection line corresponds to a...

AI Technical Summary

Problems solved by technology

In the prior art, there are only voltage and current detection and protection circuits for a single bundle, and there is no structure for decomposing the power supply connection into multiple bundles for detection and protection. within its safety range, thereby preventing greater power transfer capability and better protection of lines and contacts

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