NXP Semiconductors MC33FS8415G0ES

Overview

MC33FS8415G0ES from NXP Semiconductors is an ASIL B–capable automotive fail-safe system basis chip (SBC) integrating a VPRE synchronous buck controller, one integrated low-voltage synchronous BUCK1 (MCU core supply), one integrated BUCK3 (configurable up to 3.6 A), two LDOs (up to 400 mA each), and a BOOST converter. It supports radar and ADAS domain controllers with external frequency synchronization, spread-spectrum EMC optimization, and fail-safe output for safety-critical power sequencing.

For engineers reviewing the MC33FS8415G0ES datasheet, MC33FS8415G0ES pinout, MC33FS8415G0ES application, or MC33FS8415G0ES equivalent, key selection criteria include its ASIL B safety certification per ISO 26262, OTP-programmable power-up sequencing across six slots, dual SPI/I²C interface with CRC, and support for multi-phase operation between BUCK1 and BUCK3 in select configurations.

Technical Context

The MC33FS8415G0ES implements a hierarchical power management architecture with dedicated regulators for MCU core (BUCK1), I/O/ADC (LDO1/LDO2), auxiliary rails (BUCK3), and high-side gate drive (VPRE). Its fail-safe state machine monitors VCOREMON, VMON1–VMON4, and FCCU inputs to assert FS0B on fault detection, enabling safe shutdown in ASIL B systems.

It features configurable switching frequencies (455 kHz forced-PWM or 2.22 MHz), programmable soft-start slew rates (7.81 mV/µs for BUCK1/BUCK2, 10.41 mV/µs for BUCK3), and TSD-triggered regulator shutdown with DFS escalation-enabling deterministic response to thermal faults without MCU intervention.

Key Specifications

Pinout & Package

MC33FS8415G0ES is housed in HVQFN56 (8 mm × 8 mm × 0.85 mm, 0.5 mm pitch) with wettable flank and exposed thermal pad (EP) connected to GNDFS/GND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive SBC applications.

Compared with MC33FS8410G0ES, MC33FS8415G0ES adds FCCU monitoring and infinite deep fail-safe retry-critical for radar systems requiring persistent fault containment. Versus MC33FS8510A0ES, it trades ASIL D certification and challenger watchdog for lower cost and reduced diagnostic overhead in ASIL B designs.

Availability

MC33FS8415G0ES is available at Aetrix Electronics and suitable for radar sensor modules, ADAS domain controllers, vision camera systems, and infotainment head units requiring stable component supply, AEC-Q100 Grade 1 qualification, and ASIL B functional safety compliance.

Supply support for MC33FS8415G0ES includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in automotive processors and power management ICs.

The FS84 product line delivers ASIL B–certified system basis chips optimized for radar, vision, and ADAS domain controllers-integrating multiple SMPS, LDOs, safety monitors, and fail-safe outputs in a single HVQFN package.

FAQ

What safety standard does MC33FS8415G0ES comply with?

MC33FS8415G0ES complies with ISO 26262 up to ASIL B and is qualified per AEC-Q100 Grade 1 (125 °C ambient). It includes hardware-based fail-safe state machine, voltage monitoring on five inputs (VCOREMON, VMON1–VMON4), and configurable fault response-including infinite deep fail-safe retry and FS0B assertion on violation. The device does not meet ASIL D requirements.

Does MC33FS8415G0ES support multi-phase operation between BUCK1 and BUCK3?

Yes, MC33FS8415G0ES supports multi-phase operation between BUCK1 and BUCK3 when both regulators are enabled and configured with appropriate phase shift (e.g., delay 0 and delay 6). This extends effective current capability to 7.2 A peak on a single rail and reduces output ripple-confirmed in OTP flavor MC33FS8415GY where BUCK1 and BUCK3 are both active and sequenced in Slot 3 and Slot 0 respectively.

What is the function of the PSYNC pin on MC33FS8415G0ES?

The PSYNC pin on MC33FS8415G0ES serves as a bidirectional power synchronization interface. It enables synchronized switching across two MC33FS8415G0ES devices or between MC33FS8415G0ES and an external PMIC. This synchronization reduces system-level conducted and radiated EMI by aligning switching edges-critical for radar and vision systems sensitive to noise coupling.

Can MC33FS8415G0ES be configured via I²C or SPI after power-up?

Yes, MC33FS8415G0ES supports full runtime configuration via 32-bit SPI or I²C interface with CRC protection. Registers controlling BUCK/LDO output voltages, soft-start slew rates, monitoring thresholds, sequencing slots, and fail-safe behavior are accessible post-power-up. OTP programming is factory-performed; customer runtime writes do not alter OTP content but enable dynamic adaptation during system operation.

What are the key differences between MC33FS8415G0ES and MC33FS8415GJES?

MC33FS8415G0ES is a superset configuration supporting generic FS8415 applications, while MC33FS8415GJES is application-optimized for radar with NXP S32R294 + TEF810x in 12 V/24 V systems. GJES features pre-programmed OTP settings including VPRE = 3.3 V, BUCK1 = 0.825 V, BUCK3 = 2.3 V, LDO1 = 1.8 V, LDO2 = 3.3 V, and sequencing slots aligned for radar boot timing-reducing design-in effort versus the generic G0ES variant.