FS8600_SDS

Fail-safe system basis chip with multiple SMPSs and LDOs

Rev. 1.1 — 23 November 2021

Product short data sheet

1 General description

The FS86 device family, SW compatible with FS84/85 family, expands the power

capability, the safety integration and system scalability of domain controller applications

to address the multiple MCU requirements present in ADAS and Electrification.

The FS86 includes multiple switch mode and linear voltage regulators and enhanced

safety features with Fail-Safe outputs. The latest NXP HV Buck architecture features

a 15 A capability with e-fuse protection to shut down the system power to prevent

any damage in case of a harmful event. The ability to monitor ten voltages with

+/-1% accuracy extends the system safety concept by allowing QM rails from others

components to be monitored.

With its innovative synchronization feature, the FS86 is part of the BYLink System

Power Platform, enabling a new smart approach to designing Safe System Power

Management. It provides power, safety and system scalability to ease platform

development strategies. Cascaded system SBC/PMICs behave as ONE with safety and

sequencing synchronization.

The FS86 is part of a complete family of devices that offer scalability in power and safety,

and provide pin-to-pin and software compatibility. It is developed in compliance with the

ISO 26262 standard and is qualified according to AEC-Q100 requirements.

2 Features and benefits

Operating Range

• 60 V DC maximum input voltage for 24 V battery network applications

• 36 V DC maximum input voltage for 12 V battery network applications

• Support operating voltage range down to 4.5 V battery voltage with VPRE = 3.3 V

• Low Power OFF mode with low sleep current (10 µA typ.)

Power Supplies

• VPRE: Synchronous high voltage buck controller with external FETs

– Configurable output voltage from 3.3 V to 5.0 V and current capability up to 15 A DC

– Selectable switching frequency in force PWM with APS

• BOOST: Low voltage boost converter with integrated low-side FET

– Configurable output voltage from 5 V to 6 V and current capability up to 1 A DC

• BUCK: Low voltage integrated synchronous BUCK converter

– Configurable output voltage from 1.0 V to 3.3 V and current capability up to 2.5 A DC

• LDO1: Low voltage LDO regulator for MCU I/O and system peripheral support with load

switch capability

– Configurable output voltage from 1.5 V to 5.0 V and current capability up to 400 mA

DC