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

Sense amplifier, method for wake-up charging current and electronic device

A sensor amplifier and charging current technology, applied in the field of sensor amplifiers, can solve the problems of noise influence, large peak-to-peak ripple current, inaccurate average value of wake-up charging current, etc., and achieve the effect of reducing ripple and noise

Inactive Publication Date: 2008-11-26
O2 MICRO INT LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this traditional approach results in an inaccurate average value of the wake-up charge current, a large peak-to-peak ripple current, and possibly noise

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
  • Sense amplifier, method for wake-up charging current and electronic device
  • Sense amplifier, method for wake-up charging current and electronic device
  • Sense amplifier, method for wake-up charging current and electronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Characteristics and benefits of embodiments of the claimed subject matter will become apparent from the following detailed description, and by reference to the accompanying drawings, wherein like reference numerals represent like parts.

[0037] While the ensuing detailed description proceeds with reference to illustrative embodiments thereof, numerous alternatives, modifications, and variations thereof will be apparent to those skilled in the art. Therefore, it is intended to take a broader view of the requested subject matter.

[0038] figure 1 A block diagram of the electronic device 100 is illustrated. The electronic device 100 may be any type of device with a rechargeable battery 106, such as a laptop computer, a cellular phone, a personal digital assistant, a digital video camera, and the like. The rechargeable battery 106 may be any type of battery such as lithium ion, lithium polymer, nickel-cadmium, nickel metal hydride, and the like. Rechargeable battery 10...

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 sense amplifier adapted to amplify a voltage signal representative of a charging current provided to a rechargeable battery. The sense amplifier may include a p-type input sense amplifier and an n-type input sense amplifier, The p-type input sense amplifier may be enabled and the n-type input sense amplifier may be disabled if a battery voltage level of the rechargeable battery is less than an under voltage threshold level. The p-type input sense amplifier may be disabled and the n-type input sense amplifier may be enabled if the battery voltage level is greater than or equal to the under voltage threshold level. A related method and an electronic device having a sense amplifier consistent with an embodiment are also provided.

Description

technical field [0001] The present invention relates to sense amplifiers, and in particular to sense amplifiers for use with rechargeable batteries for wake-up charging current. Background technique [0002] A variety of electronic devices, such as portable computers, cellular phones, personal digital assistants, and other portable or non-portable electronic devices, can use rechargeable batteries. Under certain conditions, rechargeable batteries are deeply discharged. A deeply discharged battery pack may be defined as a battery having a battery voltage level below a low voltage threshold level, where the value of the low voltage threshold level may vary by battery type and manufacturer. To prevent stressing such a deeply discharged battery at the beginning of the battery charging process, a relatively small "wake-up" current can be supplied to the deeply discharged battery. A wake-up current may be provided to the battery until the battery voltage level reaches a low volt...

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): H02J7/00H01M10/44H02M3/00G01R31/36
CPCH02J7/0075H02J7/045H02J7/0069H02J7/04H02J7/007182
Inventor 卢纯
Owner O2 MICRO INT LTD