NXP FS04 High Voltage Safety PMICs

Introduction

The NXP FS04 family consists of high-voltage safety power management ICs (PMICs) designed for demanding automotive electronic systems. These multi-output devices consolidate several power-conversion, monitoring, diagnostic, and functional-safety functions into a single solution for vehicle compute and control platforms.

Part Description

FS04 PMICs are automotive-focused power-management devices that support the reliable distribution and supervision of power rails in safety-oriented electronic control units. The family combines multiple regulator types to serve a range of system voltage requirements from a vehicle battery input.

Key integrated functions include:

• High-voltage buck controller for efficient conversion from automotive battery supplies
• Five internal-stage buck regulators for powering processors, memory, communications devices, and peripheral circuits
• Boost regulator for rails requiring a voltage above the available input or regulated intermediate supply
• Low-power LDO or load-switch function for low-current rails, controlled peripherals, or standby domains
• Power monitoring and diagnostic capabilities
• Functional-safety support targeting ASIL B and ASIL D system requirements
• Multi-output architecture that can reduce external power-management components
• Support for automotive central compute, gateway, domain controller, and zonal controller designs

By integrating regulation, control, diagnostics, and safety-related monitoring, the FS04 helps designers create more compact and manageable automotive power architectures.

Applications

Potential applications for the FS04 include:

• Automotive central computing units
• Vehicle domain controllers
• Zonal control modules
• Automotive gateway modules
• Advanced driver-assistance systems (ADAS)
• Autonomous-driving compute platforms
• Digital instrument clusters
• Infotainment and connectivity controllers
• Telematics control units
• Body-control modules
• Electrified vehicle control electronics
• Safety-critical electronic control units

Industries

The FS04 PMIC family is applicable to several industries, including:

• Automotive manufacturing
• Electric vehicle and hybrid vehicle systems
• Automotive electronics
• Advanced driver-assistance systems
• Autonomous vehicle development
• Transportation technology
• Fleet telematics
• Industrial vehicle electronics
• Mobility infrastructure
• Embedded computing platforms

Usage Ideas

1. Zonal Controller Power Tree

Use an FS04 PMIC to generate and supervise multiple voltage rails for a zonal controller containing a microprocessor, CAN/LIN interfaces, Ethernet hardware, sensor interfaces, and local actuator control circuitry.

2. ADAS Compute Module

Develop a power subsystem for an ADAS processing board. The PMIC can provide regulated supplies for a high-performance processor, memory devices, camera interface components, and communication transceivers while supporting diagnostic and safety-monitoring needs.

3. Automotive Gateway ECU

Design a compact automotive gateway ECU that connects CAN, LIN, Automotive Ethernet, and telematics interfaces. The FS04 can centralize power conversion and rail monitoring for the gateway processor, network controllers, memory, and peripheral circuits.

Conclusion

NXP FS04 High Voltage Safety PMICs provide a highly integrated power-management platform for modern automotive electronics. Their combination of high-voltage conversion, multiple buck regulators, boost capability, low-power regulation or load switching, diagnostics, and ASIL B/D support makes them well suited to safety-aware vehicle compute, gateway, domain, and zonal controller applications.