TPS65381AQDAPRQ1 Description

The TPS65381A-Q1 device is a multirail power supply designed to supply microcontrollers (MCUs) in safety-relevant applications, such as those found in automotive and industrial markets. The device supports Texas Instruments'Hercules? TMS570 MCU and C2000? MCU families, and various other MCUs with dual-core lockstep (LS) or loosely-coupled architectures (LC).

The TPS65381A-Q1 device 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 6-V preregulator output. 

This 6-V preregulator supplies the other regulators. The device supports wakeup from IGNITION or wakeup from

the CAN transceiver.

TPS65381AQDAPRQ1 Features

Qualified for Automotive Applications

AEC-Q100 Qualified With the Following

Results:

Device Temperature Grade 1: –40°C to +125°C

Ambient Operating Temperature

Device HBM ESD Classification Level H2

Device CDM ESD Classification Level C3B

Multirail Power Supply Supporting Among

Others

TI Hercules? TMS570, C2000?, and Various

Functional-Safety Architecture Microcontrollers

Supply Rails

Input voltage range:

5.8 V to 36 V (CAN, I/O, MCU Core, and

Sensor-Supply Regulators Functional)

4.5 V to 5.8 V (3.3 V I/O and MCU Core

Regulators Functional)

6-V Asynchronous Switch Mode Preregulator

With Internal FET, 1.3-A Output Current

TPS65381AQDAPRQ1 Applications

Safety Automotive Applications

Power Steering: Electrical Power Steering

(EPS) and Electro Hydraulic Power Steering

(EHPS)

Braking: Anti-Lock Brake System (ABS),

Electronic Stability Control (ESC), and Electric

Parking Brake

Advanced Driver Assistance Systems (ADAS)

Suspension