Safety System Basis Chip (SBC) with Low Power Fit for ASIL D

FS26 new

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The FS26 is a family of automotive safety system basis chip (SBC) devices with a multiple power supply designed to support entry and mid-range safety microcontrollers like S32K3 series while maintaining flexibility to fit other microcontrollers targeting automotive electrification such as powertrain, chassis, safety and low-end gateway applications.

FS26 features multiple switch mode regulators as well as LDO voltage regulators to supply the microcontroller, sensors, peripheral ICs and communication interface. FS26 offers a high precision voltage reference available to the system and a reference voltage for 2 independent voltage tracking regulators in addition of various functionalities for system control and diagnostics such as analog multiplexer, GPIOS and selectable wake up events from I/O, long duration timer or SPI communication.

The FS26 is developed in compliance with the ISO 26262 standard and it includes enhanced safety features, with a multiple fail-safe output, becoming a full part of a safety-oriented system partitioning, covering both ASIL B and ASIL D safety integrity level, with latest on-demand latent fault monitoring.

Block Diagram

FS26 Safety SBC Block Diagram

FS26 Safety SBC Block Diagram
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Features

Power Management

  • 40 V DC maximum input voltage
  • Handle severe cranking operation (3.2 V battery) due to its BOOST controller
  • Low Power Off mode with very low sleep current (35 uA typ.)
  • Low Power Standby mode, VPRE active. LDO1 or LDO2 active selectable via OTP configuration (35 uA typ.)
  • Multiple switch mode regulators as well as LDO voltage regulators to supply the microcontroller, sensors, peripheral ICs and communication interface

System Solutions

  • System added value to save space and reduce complexity: LDT, AMUX, Dual Tracker, Vref
  • Programmable long duration timer (LDT) for system turn-off/wake-up control
  • Selectable wake-up sources from: WAKE/GPIO pins, LDT or SPI activity

Functional Safety

  • Scalable portfolio from automotive safety integrity levels (ASIL) B to D
  • Enable latent fault monitoring when system is running: ABIST on demand
  • Independent monitoring circuitry
  • Dedicated interface for microcontroller monitoring
  • Simple and challenger watchdog function
  • Safety outputs with latent fault detection mechanism (RSTB, FS0B, FS1B)

Configuration and Enablement

  • LQFP48 pins with exposed pad for optimized thermal management
  • Permanent device customization via one-time-programming (OTP) fuse memory
  • Temporary OTP emulation mode for system development and evaluation
  • Ready to use S32K3 + FS26 hardware and software

Product Longevity Program

  • This product is included in the NXP Product Longevity program ensuring a stable supply of products for your embedded designs. Automotive target market derivatives are included in the 15-year program

BYLink System Power Platform

BYLink System Power Platform

BYLink System Power Platform

This platform facilitates the design of safe power management systems thanks to a portfolio of configurable and linkable devices. It simplifies complex power supply subsystems into a single smart solution.
Learn more about this platform

PMICs and SBCs for Multi-Vendor Processors

PMICs and SBCs for Multi-Vendor Processors

Whether you are developing automotive, industrial or consumer applications, our configurable and flexible solutions support multi-vendor processors.
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