NXP Semiconductors FS8400 & FS8500 System Basis Chips

NXP Semiconductors FS8400 and FS8500 System Basis Chips are automotive functionally safe multi-output power supply integrated circuits (PMICs), optimized for radar, vision, advanced driver assistance systems (ADAS), and infotainment applications. The FS8400 and FS8500 are designed in compliance with the ISO 26262 Automotive Safety Integrity Level (ASIL) standard for the functional safety of road vehicles. The nxp FS8400 is ASIL level B capable, and the FS8500 is ASIL D capable. All device options are pin-to-pin and software-compatible.

The FS8400 and FS8500 SBCs are offered in a thermally enhanced QFN package with wettable flanks.

Features

ISO 26262 compliant and AEC-Q100 Grade1 qualified
- FS8400: ASIL B
- FS8500: ASIL D
60V_DC maximum input voltage for 12V and 24V applications
VPRE synchronous buck controller with external MOSFETs
Configurable output voltage, switching frequency, and current capability up to 10A peak
Low voltage integrated synchronous BUCK1 converter, dedicated to MCU core supply with SVS capability
Configurable output voltage and current capability up to 3.6A peak
Based on device options
- Low voltage integrated synchronous BUCK2 converter
- Multiphase capability with BUCK1 to extend the current capability up to 7.2A peak on a single rail
- Static voltage scaling capability
- Low voltage integrated synchronous BUCK3 converter
BOOST converter with integrated low-side switch
Configurable output voltage and max input current up to 1.5A peak

EMC optimization techniques including SMPS frequency synchronization, spread spectrum, slew rate control, manual frequency tuning
2x linear voltage regulators for MCU IOs and ADC supply, external physical layer
Configurable output voltage and current capability up to 400mA DC.
OFF mode (power down) with very low quiescent current (10μA typical)
2x input pins for wake-up detection and battery voltage sensing
Device control via 32 bits SPI or I²C interface with CRC
Power synchronization pin to operate 2x FS8500 devices or FS8500 plus an external PMIC
Scalable portfolio from ASIL B to ASIL D with independent monitoring circuitry, dedicated interface for MCU monitoring, simple and challenger watchdog function, power good, reset and interrupt, built-in self-test, fail-safe output
Configuration by One-Time Programming (OTP)
Prototype enablement to support custom settings during project development in engineering mode
HPQFN-56 package with wettable flanks
- 8.0mm x 8.0mm x 0.85mm
- 0.5mm pitch