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
