Ferrite switch driver with self-feedback latch switch-off function

A switch driver and ferrite technology, applied in electronic switches, electrical components, pulse technology, etc., can solve problems such as reduced reliability, program runaway, and device failure, and achieve reduced switching losses, simple circuits, and reduced power consumption. heat effect

Pending Publication Date: 2020-06-26
中国电子科技集团公司第九研究所
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be improved by the present invention is: to realize the real-time high-speed driving performance of the ferrite switch, the ferrite switch driver controlled by traditional FPGA and CPLD is expensive and difficult to purchase, and the latch-up effect may occur after being disturbed, At the same

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
  • Ferrite switch driver with self-feedback latch switch-off function
  • Ferrite switch driver with self-feedback latch switch-off function
  • Ferrite switch driver with self-feedback latch switch-off function

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example 1: see figure 1 , A self-feedback latching off ferrite switch driver, including a logic conversion circuit, a driver amplifier circuit, an H-bridge power drive circuit, and a comparator feedback circuit;

[0042] The logic conversion circuit is used to receive the upper-level control signal and the feedback signal output by the comparator feedback circuit, and output two channels A1 and A2, where the upper-level control signal, the feedback signal, A1 and A2 are all level signals and satisfy The following conditions:

[0043] In the initial state, the superior control signal is 0, the feedback signal is 0, A1=0, A2=0;

[0044] When the upper-level control signal changes from 0 to 1, A1=0, A2=1, at this time, if the rising edge of the feedback signal comes, A1=0, A2=0;

[0045] When the superior control signal changes from 1 to 0, A1=1, A2=0, at this time, if the rising edge of the feedback signal comes, A1=0, A2=0;

[0046] The driver amplifying circuit is used to receiv...

Example Embodiment

[0049] Example 2: see Figure 2-Figure 4 In this embodiment 2, on the basis of embodiment 1, the specific circuit forms of the logic conversion circuit, the driver amplifying circuit, the H-bridge power driving circuit, and the comparator feedback circuit are respectively given, as follows:

[0050] The logic conversion circuit includes D flip-flop U1A, exclusive NOR gate U2A, NOT gate U3A, AND gate U4A and AND gate U4B; pin 2 of said D flip-flop U1A is connected to the upper-level control signal, pin 3 is connected to the feedback signal, 4 There are two pins, one is connected to 5V power supply via resistor R6, and the other is grounded via capacitor C2; pin 2 of D flip-flop U1A is also connected to the 1A end of exclusive NOR gate U2A and AND gate U4B respectively, and connected to AND gate via NOR gate U3A The 1A end of U4A; the 2A end of the exclusive NOR gate U2A is connected to the 6 pin of the D flip-flop U1A, the 1Y end is divided into two ways, one is connected to the 5...

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 discloses a ferrite switch driver with a self-feedback latch switch-off function. The ferrite switch driver comprises a logic conversion circuit, a driver amplifying circuit, an H-bridgepower driving circuit and a comparator feedback circuit. The logic conversion circuit receives a superior control signal and a feedback signal of the comparator feedback circuit, processes the signals, inputs the signals to the driver amplification circuit for amplification, and then inputs the signals to the H-bridge power drive circuit to drive the ferrite coil. Meanwhile, the comparator feedback circuit samples the current of the ferrite coil, and when the current reaches a preset value, the comparator feedback circuit sends a positive pulse to the logic conversion circuit to turn off theH-bridge power driving circuit. Under the condition that a microcontroller or an FPGA or a CPLD is not used, the ferrite coil can be effectively driven to the preset current, and automatic feedback and latch turn-off can be achieved. Compared with a ferrite switch driver using a microcontroller or an FPGA or a CPLD, the ferrite switch driver has the advantages of being simple in structure, lower in cost, higher in speed and higher in reliability.

Description

technical field [0001] The invention relates to a ferrite switch driver, in particular to a self-feedback latch-off ferrite switch driver. Background technique [0002] Ferrite switches have the function of changing microwave signal transmission channels, and are currently widely used in ground, airborne, and satellite radar communications. The ferrite switch is mainly composed of a microwave transmission line cavity, a ferrite material, a coil, and a driver, wherein the ferrite material and the coil are located inside the microwave transmission line cavity, and the driver is located outside the microwave transmission line cavity. As an important part of the ferrite switch, the driver’s main function is to receive the switching control signal of the upper switch, alternately generate pulse current excitation to the two directions of the single coil, change the microwave characteristics of the ferrite material, and then realize the channel of the microwave signal switch. Du...

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): H03K17/08H03K17/12
CPCH03K17/007H03K17/08H03K17/122
Inventor 赵勇白雪闫欢唐保权
Owner 中国电子科技集团公司第九研究所
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap