Battery management IC is first to comply to MIPI BIF
ORIGA 3’s PrediGauge technology accurately determines remaining battery capacity under the most adverse conditions. Within a few minutes of battery relaxation the IC predicts the future OCV and therefore the charging state within an average accuracy range of one percent. This ultimately leads to increased customer satisfaction as the users of smartphones and tablet computers will be able to exploit the full battery capacity without sudden drops of capacity readings and unexpected shutdowns.
Additional functions of ORIGA 3 comprise precise temperature sensing as well as inputs for several sensors such as external temperature, strain gauge, and humidity. All information gathered by the IC is transferred to the host device (smartphone or tablet) using the MIPI BIF digital protocol. ORIGA 3 claims to be the first fuel gauge in the market compliant to the MIPI BIF digital protocol.
The growing number of functionalities in mobile devices requires bigger battery capacity and higher charging voltages of 4.35 V or more. Unauthorized replacement batteries of poor quality – not designed to be charged at such voltages – may swell and even explode, causing damage or injuries and exposing manufacturers to legal risks and bad publicity. The hardware authentication feature of ORIGA 3 helps to identify unauthorized batteries, thus protecting both customer safety and OEM brand image.
The ORIGA 3 authentication is based on an enhanced version of elliptic curve cryptography (ECC). The device includes the ORIGA Digital Certificate feature which has already been introduced successfully with ORIGA 2 and allows for individual keys for each chip. In addition to that, the third generation enables secure field updates of the firmware. The feature helps to better protect customers from hacker attacks.
Engineering samples and starter kits are available from March 2014.
More information about Infineon’s ORIGA solution at www.infineon.com/ORIGA3