Solid State Power Controller

Abstract

The solid-state power controller described in the present invention proposes a fault detection circuit design applied to the solid-state power controller to solve the problem that the solid-state power controller cannot be accurately identified between the normal shutdown mode and the fault shutdown mode. The solid-state power controller includes a fault detection circuit consisting of a power supply (reset) circuit, a signal detection circuit, and a status output circuit. The power supply (reset) circuit controls the power-on and power-off of the signal detection circuit and the state output circuit, and its VCC power supply is generated by voltage division and rectification of the bus power supply of the solid-state power controller, and a reset signal is generated at the moment of power-on to control the signal detection circuit Perform a reset operation; the signal detection circuit receives the reset signal generated by the power supply (reset) circuit at the moment of power-on, and performs a reset operation on the circuit. and the level control signal generated by the protection circuit to output high level or low level; the state output circuit outputs high level and low level signals respectively according to the level signal output by the signal detection circuit.

Description

technical field [0001] The invention relates to a novel solid-state power controller with a fault detection circuit and a shutdown cause monitoring means, and belongs to the technical field of electrical design. Background technique [0002] With the rapid development of microelectronics technology and chip process design in the domestic electronics industry, solid-state power controllers, as the core control switches in the field of power electronics control, have also been widely used in various power supply and distribution systems. [0003] Generally, the solid-state power controller includes a power supply circuit, a switch control circuit, a power drive circuit, a current acquisition circuit, a protection circuit, and an indication circuit. Once a fault such as overcurrent / short circuit occurs, the controller can immediately identify and directly cut off the power supply to protect the system where it is located, reflecting the advantages of fast response, strong anti-...

AI Technical Summary

Problems solved by technology

[0006] The solid-state power controller described in this application is to solve the problems existing in the above-mentioned prior art and propose a fault detection circuit design applied to the solid-state power controller, so as to solve the inability between the normal shutdown mode and the fault shutdown mode of the solid-state power controller. Accurately identify the problem, thereby improving the accuracy of judging the working state of the controller circuit

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