TPS65381AQDAPRQ1

TPS65381A-Q1 Multi-Rail Power Supply

Texas Instruments TPS65381A-Q1 Multi-Rail Power Supply is designed to supply microcontrollers (MCUs) in safety-relevant applications, such as those found in automotive and industrial markets. The device supports TI's Hercules™ TMS570 MCU and C2000™ MCU families, and various other MCUs with dual-core lockstep (LS) or loosely-coupled architectures (LC). The TPS65381A-Q1 integrates multiple supply rails to power the MCU, controller area network (CAN), or FlexRay, and an external sensor. An asynchronous-buck switch-mode power-supply converter with an internal FET converts the input supply (battery) voltage to a 6V pre-regulator output. This 6V pre-regulator supplies the other regulators. The device supports wakeup from IGNITION or wakeup from the CAN transceiver. The integrated, fixed 5V linear regulator with internal FET can be used for a CAN or FlexRay transceiver supply, for example. A second linear regulator, also with an internal FET, regulates to a selectable 5V or 3.3V output which, for example, can be used for the MCU I/O voltage.