Abstract

This application note describes the three methods for powering an automotive infotainment and cluster system using Texas Instruments' scalable Power Management Integrated Circuits (PMIC). The recommended power design depends on the business case, time to market, and required deliverables for the project. These factors determine whether a custom, catalog, or user-programmable design is most appropriate for the customer’s project.

The first option for selecting a PMIC is a catalog programmed device. These PMICs are programmed and available on ti.com. For 7+ rail processors, TPS65219-Q1 powers systems with applications needing 3 Bucks and 4 LDOs. For higher current applications requiring over 4A, the FlexPower portfolio (LP8732-Q1, LP8733-Q1, LP8752x-Q1, and LP8756x-Q1) offers configurability to maximize rail usage and size.

For projects requiring programmable settings that are different from available catalog PMICs, a custom programmed device can be considered to meet the customer’s specifications. Custom programmed PMICs must have a qualifying business case and at least six months before releasing the PMIC to market. TI will support samples of the device prior to production for the customer to verify and change the settings as needed to optimize the design for the use case. TPS65219-Q1 and the FlexPower product line are available for custom programming for infotainment and cluster applications.

If a faster time to market is needed and an existing catalog PMIC does not meet the programming requirements, the user-programmable TPS6521905-Q1 is available on ti.com. The companion user-friendly GUI and programming guide make using this device simple and accessible. TI’s best in class customer service is available to provide support in the programming process.