NXP FS04

The NXP FS04 is a high voltage automotive power management IC designed for S32N processors. It integrates a high voltage buck controller, five buck regulators, one low power LDO and a boost regulator to provide efficient multirail power management for automotive applications. 

Supporting ASIL B and ASIL D functional safety, the FS04 combines real time diagnostics, fail safe outputs, ABIST and LBIST self-tests and dedicated safety interfaces. The device is AEC Q100 Grade 1 qualified and supports low power operation, high speed I²C communication, advanced thermal protection and flexible OTP configuration.

Key Features

• A high-voltage synchronous buck controller, driving external MOSFETs
• Five buck regulators with internal power stage
• One low-power linear regulator
• One Boost regulator with integrated low side switch
• 64 pins QFN package with exposed pad, 0.5 mm pitch
• Automotive qualified AEC-Q100 up to Grade 1

Safety Features

• Functional safety architecture to target ASIL D applications
• Real-time monitoring, safety mechanisms and diagnostics
• ABIST and LBIST for latent fault detectio

System Features

• Optimised low-power architecture, 35 uA quiescent in Standby mode with 3 regulators enabled
• High-Speed I²C interface with up to 3.4 MHz operation
• Advance thermal monitoring and thermal shutdown protection
• Advance frequency management, including frequency spread spectrum, slew rate control, manual frequency tuning
• One-time programmable (OTP) memory for flexible device configuration

Block diagram

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