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

A full-bridge synchronous rectification controller

A technology of synchronous rectification and synchronous rectifier tube, which is applied in the direction of converting AC power input to DC power output, output power conversion device, and climate sustainability. Improve production efficiency and save the effect of secondary winding

Active Publication Date: 2019-10-29
MORNSUN GUANGZHOU SCI & TECH +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Figure 5 and Image 6 Both solutions require 4 external synchronous rectifiers and corresponding drive control circuits, which increases the cost of the power supply system

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
  • A full-bridge synchronous rectification controller
  • A full-bridge synchronous rectification controller
  • A full-bridge synchronous rectification controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] In order to better understand the improvements made by the present invention over the prior art, specific implementations of the present invention will be described in detail.

[0050] Such as Picture 10 Shown is the application circuit diagram of the full-bridge synchronous rectifier controller of the present invention applied to a push-pull converter. The primary side of the push-pull converter is a kind of push-pull converter proposed by the Chinese patent application number 201620875467.5. The transistor drive controller and the secondary side of the push-pull converter are a full-bridge synchronous rectification controller proposed by the present invention. The output capacitor Co and the output resistance Ro are connected in parallel between the output end of the push-pull converter and the output ground.

[0051] Among them, the full-bridge synchronous rectifier controller includes two self-driving PMOS synchronous rectifiers MP31 and MP32, two other-driving NMOS sync...

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

Disclosed is a full-bridge synchronous rectification controller, in which a full-bridge synchronous rectification circuit formed by two self-driven PMOS synchronous rectifiers and two externally-driven NMOD synchronous rectifiers, and a control circuit thereof are integrated. The two self-driven synchronous rectifiers select to be turned on by transformer windings on their own, without requiring a driving circuit. The two externally-driven synchronous rectifiers generate a spike voltage at the drain after being turned on, and a synchronous rectification logic module 1 and a synchronous rectification logic module 2 may generate signals for turning off the externally-driven synchronous rectifiers after detecting the spike voltage, so a signal for turning off the externally-driven synchronous rectifiers is blocked by means of a minimum turn-on time signal, preventing the externally-driven synchronous rectifiers from being turned off immediately after being turned on. The present invention can realize that only one full-bridge synchronous rectification controller is required for a secondary side of a separately excited push-pull converter, improving the output efficiency, saving one secondary winding, improving the production efficiency, and reducing machining costs and power supply system costs.

Description

Technical field [0001] The invention relates to a full-bridge synchronous rectification controller, in particular to a synchronous rectification controller applied to push-pull converters and full-bridge converters. Background technique [0002] The circuit structure of the push-pull converter is simple, the transformer is excited in both directions during operation, and the utilization rate of the magnetic core is high. Therefore, the converter has the advantages of small size, high efficiency and good dynamic response. It is suitable for low voltage input, large current output, and input and output. Applications that require electrical isolation are widely used. [0003] The Chinese patent application number 201620875467.5 proposes a transistor drive control method for a push-pull converter, which is suitable for drive control of two push-pull transistors. Such as figure 1 It shows that the voltage input terminal Vin of the push-pull converter is connected to the center taps of ...

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): H02M7/219
CPCH02M7/219Y02B70/10
Inventor 肖华
Owner MORNSUN GUANGZHOU SCI & TECH