Check patentability & draft patents in minutes with Patsnap Eureka AI!

Forward converter having self-driving synchronous rectifier

A synchronous rectifier and rectifier technology, which is applied in the output power conversion device, the conversion of AC power input to DC power output, electrical components, etc., can solve the problems of conduction and loss of large rectifiers

Inactive Publication Date: 2009-04-01
GLACIALTECH +1
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It is worth noting that the rectifier of the slave circuit uses a diode as the rectifier of the power circuit, which causes a large conduction loss of the rectifier

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
  • Forward converter having self-driving synchronous rectifier
  • Forward converter having self-driving synchronous rectifier
  • Forward converter having self-driving synchronous rectifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Please refer to FIG. 4 , which is a schematic diagram of a main output configuration of a forward converter with a self-driven synchronous rectifier according to an embodiment of the present invention. As shown, a transformer includes a primary winding T 1 , secondary power winding (secondary power winding) T 2 And secondary driving coil (secondary drivingwinding) T 3 , where the primary coil T 1 It is used to connect an external power supply to provide input voltage Vi. The black dot end in the figure is the first end of the coil, the black dot indicates the same polarity, and the other end is the second end of the coil.

[0025] Secondary Power Coil T 2 Connected to the main power circuit 21, it has a voltage output terminal (high voltage terminal) and a ground terminal (low voltage terminal), which are used to provide a voltage V for driving an external load circuit (load) (not shown in the figure). 1 , and a filter capacitor C is connected between the voltage ou...

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

A forward converter with a self-drive type synchronous rectifier uses a secondary drive coil and a secondary drive circuit so as to drive the synchronous rectifier in a secondary power circuit. The secondary drive circuit comprises a potential shifter, a signal distributor, voltage across the secondary drive coil by a potential displacement, and distributes a voltage signal so as to control a forward unrestricted rectifier to reduce breakover loss. In particular, the unrestrained rectifier still can be opened so as to further reduce breakover loss during the delay period.

Description

technical field [0001] The present invention discloses a forward converter with a self-driven synchronous rectifier. Background technique [0002] Forward converters are often used to convert a high DC voltage source into multiple sets of low DC voltage sources, where the master output is modulated with a closed-loop pulse width modulation ) regulated voltage (regulated) and the slave outputs (slave outputs) are regulated by a secondary side post regulator (SSPR). [0003] The main output circuit is shown in Figure 1. The secondary power circuit consists of the secondary power coil T s , forward rectifier M f , unconstrained (freewheeling) rectifier M w , Energy storage inductance L 1 with filter capacitor C 1 composed of. In this circuit, the error amplifier circuit 3 samples the output voltage V 1 And compared with a reference voltage to generate an amplified error voltage; the control circuit 2 converts the amplified error voltage into a pulse width modulation sig...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/217H02M1/14
Inventor 王志良余金生
Owner GLACIALTECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com