アプリケーションノート 125

Using Dallas Battery Management ICs with High Voltage Battery Packs


要約: This application note presents to the reader a reference circuit design that allows the use of the Dallas Semiconductor DS2438 battery monitor in a high voltage battery pack. Originally designed for use in battery packs whose voltage is less than 10 volts, this note explains the required circuitry needed to enable the DS2438 to monitor packs of higher voltage while maintaining accurate battery current and voltage measurements. The selection criteria for each component in the reference circuit are explained in detail including the equations used to select the appropriate component values. Additionally, other circuit issues such as ESD protection and noise suppression are addressed.