Safety System Basis Chip for S32 Microcontrollers, Fit for ASIL D

FS8500

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The FS85 is an automotive, functionally safe multi-output power supply integrated circuit. It’s focused on ADAS and domain controller applications and is the primary companion chip of the S32 microcontroller.

The FS85 includes multiple switch mode and linear voltage regulators, enhanced safety features with fail-safe outputs. This makes it a full part of a safety-oriented system up to ASIL D safety integrity level.

It is part of a complete family of devices offering scalability in power and safety FS84 and FS85, pin to pin and software compatible. It is developed in compliance with the ISO 26262 standard and is qualified according to AEC-Q100 requirements.

Block Diagram

FS8500, Safety SBC Block diagram

FS8500, Safety SBC Block diagram
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Features

Key Features

  • 60 V maximum input voltage for automotive and truck markets
  • Multiple SMPS and LDO to supply S32 microcontroller and more
  • Standby OFF mode with very low sleep current (10 µA)
  • 32 bits SPI and IDC interfaces with CRC
  • FIT for ASIL D with Independent Safety Monitoring Unit

Programmability

  • Supplies, sequencing, and specific functions can be programmed by One Time programmable (OTP) memory
  • Standard Predefined OTP supporting popular MCU can be found in data sheet under “ordering information” chapter
  • During development phase, Customized OTP part can be programmed using the KITFS85SKTEVM board
  • Custom OTP can be provided for production. Please contact your NXP sales channel (NXP or your distributor)
  • Custom OTP form can be downloaded OTP Configuration Tool

Product Longevity Program

  • This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The FS85-QFN56 is included in the 15-year program

Comparison Table

Scalable Power and Safety Concept

Part number Buck 1 Buck 2 Buck 3 Vpre Boost Safety level
VR5500 0.8 V - 1.8 V
2.5 A
Multi-phase and
SVS option		 12 / 24 V HV
BUCK - 10 A		 5 V - 5.74 V
1.5 A peak		 Quality Mgt (QM)
FS8400 N/A N/A Fit for ASIL B
FS8500 Fit for ASIL D
FS5502 1.0 V - 4.1 V
3.6 A peak		 N/A Quality Mgt (QM)
FS8410 5 V - 5.74 V
1.5 A peak		 Fit for ASIL B
FS8510 Fit for ASIL D
FS8420 0.8 V - 1.8 V
2.5 A
Multi-phase and
SVS option		 N/A Fit for ASIL B
FS8520 Fit for ASIL D
FS8430 1.0 V - 3.3 V
2.5 A 		Fit for ASIL B
FS8530 Fit for ASIL D
FS6600 Fit for ASIL D

SafeAssure Functional Safety Program

SafeAssure Functional Safety Program

When it comes to functional safety, NXP stands for quality and reliability. Our SafeAssure program simplifies system-level safety requirements in accordance with ISO 26262.
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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

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

    Power Dissipation Tool (REV 1.4)

    XLSXRev 1.5Jun 5, 2021 21:19:00322.1 KBFS85-PDTCALC
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