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

Enabling circuit for avoiding negative voltage transients and battery recharging system

一种电池充电、电路的技术，应用在电池电路装置、电路装置、调节电变量等方向，能够解决相关控制器集成电路故障等问题

Active Publication Date: 2008-09-17
O2MICRO CHINA
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] If a soft start occurs when the SRC's energy storage element, such as a capacitor, is charged at a significant value, such as more than a few volts, negative voltage transients can appear at either end of the sense resistor, causing the associated control A fatal failure of the device integrated circuit

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
  • Enabling circuit for avoiding negative voltage transients and battery recharging system
  • Enabling circuit for avoiding negative voltage transients and battery recharging system
  • Enabling circuit for avoiding negative voltage transients and battery recharging system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] FIG. 1 shows a typical system 100 including an enabling circuit 104 and an associated regulating circuit 102 . The regulation circuit 102 can be any type of circuit, such as a synchronous rectification converter, including an energy storage element 106, such as a capacitor. Generally, the enabling circuit 104 monitors the charge on the energy storage element 106 and switches the regulating circuit 102 from a first state to a second state when the charge on the energy storage element is lower than a reference charge. The first state can be any type of state, such as a power-off state, and the second state can also be any type of state, such as a working state, wherein the regulating circuit 102 is controlled by a special control technique. The reference charge should be selected according to the sensitivity of the particular system and related components. In one embodiment, the reference charge may be 3.0 volts.

[0027] The enable circuit 104 has an input terminal 107...

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 present invention provides an enabling circuit for avoiding negative voltage transients and battery charging system. An enabling circuit includes a comparison circuit, a switching circuit, and an output decision circuit. The comparison circuit compares a first comparison signal representative of a charge on a capacitor of a DC to DC converter with a second comparison signal representative of a reference charge and provides a comparison output signal in response to the comparison. In response to the comparison output signal, the switching circuit provides a first switching signal in a first state if the charge on the capacitor is less than said reference charge. Finally, the output decision circuit accepts at least the first switching signal and provides an enabling signal to enable the DC to DC converter to be controlled by a control signal in response to the first switching signal in the first state.

Description

technical field [0001] The present invention relates to an enabling circuit for eliminating negative voltage transients of an associated regulation circuit, in particular to an enabling circuit if the charge on the energy storage element of a synchronous rectification converter is less than a reference charge, The circuit enables a synchronous rectification converter to switch from a first state to a second state. Background technique [0002] Many circuits contain energy storage elements such as capacitors, inductors, and transformers that transfer energy from the input to the output of such circuits. If these energy storage elements are not properly discharged under certain circumstances, undesired power disturbances, such as negative voltage transients, will occur in the output signal causing damage to nearby sensitive elements. [0003] For example, the regulating circuit can be a DC / DC converter (DC-DC converter). A DC / DC converter typically receives a DC input of a c...

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 Patents(China)
IPC IPC(8): H02M3/00H02M3/10H02J7/00G05F1/40H02M3/158
CPCY02B70/1466H02J2007/0059H02J7/0029Y02B40/90H02J7/0052H02M3/1588H02J2207/20Y02B70/10G05F1/10G05F1/40H02M3/04H02J7/00Y02B40/00
Inventor 康斯坦丁·布克玛利安·尼古拉
Owner O2MICRO CHINA
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