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Method for smart control for battery monitoring circuitry

IP.com Disclosure Number: IPCOM000029242D
Publication Date: 2004-Jun-18
Document File: 2 page(s) / 48K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for smart control for battery monitoring circuitry. Benefits include improved functionality and improved performance.

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Method for smart control for battery monitoring circuitry

Disclosed is a method for smart control for battery monitoring circuitry. Benefits include improved functionality and improved performance.

General description

              The disclosed method is switching in motherboard battery monitoring circuitry by controlling the current flow. Users can enable or disable the monitoring circuit while protecting the battery life span by avoiding unnecessary current leakage.

Advantages

              Some implementations of the disclosed structure and method provide one or more of the following advantages:

•             Improved functionality due to enabling users to activate or deactivate the monitoring circuit while protecting the battery life span by avoiding unnecessary current leakage

•             Improved performance due to enabling the battery life span to exceed the minimum 3-year specification

Detailed description

              The disclosed method includes an n-type metal oxide semiconductor field-effect transistor (MOSFET), designated as Q1D1, and a 1-kOhms resistor, designated as R1D1 (see Figure 1). The method introduces a switching mechanism using these components on an existing battery monitoring circuit. As a result, the user can choose between enabling or disabling the monitoring circuitry while protecting the life-span of the battery.

              Battery supply is used for the complementary metal oxide semiconductor (CMOS) memory in the input/output controller hub (ICH). By turning on the field-effect transistor (FET), current flows from a 3-Volt battery to the monitoring circuitry, resulting in at least 1.5 µA of current leakage due to the monitoring circuitry. A typical...