Unlock instant, AI-driven research and patent intelligence for your innovation.

Reverse current protection circuit for switching circuit

A switching circuit and reverse current technology, which is applied in emergency protection circuit devices, emergency protection devices for automatic disconnection, protection for reverse reaction to power transmission, etc., can solve problems such as unstable output voltage of switching circuits

Active Publication Date: 2018-04-17
NXP BV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the conventional reverse current protection circuit causes the output voltage of the switching circuit to be very unstable when the switching circuit starts and when the load changes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reverse current protection circuit for switching circuit
  • Reverse current protection circuit for switching circuit
  • Reverse current protection circuit for switching circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] figure 1 is a schematic block diagram of a switching circuit 100 according to an exemplary embodiment of the present invention. The switch circuit 100 includes a voltage regulation circuit 102 . The voltage regulation circuit 102 is coupled between the input terminal and the output terminal of the switch circuit 100 . When the output voltage Vout at the output terminal of the switch circuit 100 is lower than the first predetermined voltage Vref_a, the voltage adjustment circuit 102 adjusts the output voltage Vout of the switch circuit 100 to be equal to or lower than the second predetermined voltage Vref_b.

[0019] The switch circuit 100 also includes a reverse current protection circuit 104 . The reverse current protection circuit 104 includes a reverse current control circuit 106 . The reverse current control circuit 106 is coupled to the input terminal and the output terminal of the switch circuit 100 . When the output voltage Vout of the switch circuit 100 is h...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention proposes a reverse current protection circuit for a switching circuit, and the protection circuit comprises a reverse current control circuit and an enabling / disenabling circuit coupledto the reverse current protection circuit. The reverse current protection circuit is coupled to the input and output ends of the switching circuit. When an output voltage of the switching circuit is higher than a first preset voltage, the reverse current protection circuit enables the output and input ends of the switching circuit to be disconnected. From a moment when the output voltage of the switching circuit is higher than the first preset voltage and then is changed into a voltage less than the first preset voltage, the enabling / disenabling circuit disenables the reverse current protection circuit in a first predetermined time period, and enables the reverse current protection circuit after the first predetermined time period.

Description

technical field [0001] The present invention relates to a reverse current protection circuit, and more particularly, to a reverse current protection circuit capable of protecting a switching circuit from reverse current. Background technique [0002] Typically, a reverse current flow occurs in a device when the voltage at the output of the device is higher than the voltage at the input of the device. Reverse current flows from the output to the input of the device, which may degrade the performance of the device or even cause damage to the device. Therefore, many devices have reverse current protection circuits. [0003] In a switching circuit, a conventional reverse current protection circuit sets a reference voltage equal to the voltage at an input terminal of the switching circuit. When the voltage at the output terminal of the switch circuit is higher than the reference voltage, the conventional reverse current protection circuit generates an RCP (reverse current prote...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02H7/12
CPCH02H7/1213H02H3/18H02H3/003H02H3/081H02H11/003
Inventor 万明亮詹福春杨远伟
Owner NXP BV