PF09
PF09 is a nine-channel PMIC with advanced system safety monitoring for automotive and industrial ASIL D applications.
Product Overview
Description
The PF09 is a nine-channel power management IC designed for automotive and industrial applications requiring ASIL D functional safety.
It features five buck converters and four LDOs with comprehensive voltage monitoring and watchdog capabilities.
Advanced safety features include ABIST (Analog Built-In Self-Test), fault monitoring, and configurable safety mechanisms.
Product Series
PF
Primary Application
Automotive ADAS systems
Key Features
- Nine power channels for complex processor systems
- ASIL D functional safety certification capable
- Advanced voltage monitoring with ABIST
- Window watchdog with Q&A protocol
- Fault monitoring and safety mechanisms
- 3.4 MHz I2C with CRC for robust communication
- Automotive grade temperature range
- Compatible with i. MX 95 and i. MX 93
Specifications
| Input Voltage | 2.8V to 5.5V |
|---|---|
| Buck Converters | 5 bucks (SW1-SW5) |
| Linear Regulators | 4 LDOs (LDO1-LDO4) |
| Safety Level | ASIL D capable |
| Watchdog | Window watchdog with Q&A |
| Package | 56-pin HVQFN |
| Operating Temperature | -40°C to +125°C (Automotive) |
| I2C Interface | 3.4 MHz with CRC |
Applications
Automotive ADAS systems
Automotive and EV electronics
Functional safety systems
Electronic system design
Industrial safety controllers
Industrial automation and control
i. MX 95 automotive applications
Automotive and EV electronics
ASIL D certified systems
Electronic system design
FAE Expert Insights
"The PF09 is specifically designed for automotive safety applications requiring ASIL D certification. The integrated ABIST and comprehensive fault monitoring significantly simplify safety system design. I've worked with customers on multiple ADAS projects using PF09 with i. MX 95. The window watchdog with Q&A protocol provides robust protection against software failures. The safety documentation and FMEDA analysis available from NXP streamline the certification process. This is my top recommendation for any automotive safety-critical application."
ASIL D capable PMIC for automotive safety systems
— David Chen, BeiLuo
Frequently Asked Questions
What is ASIL D and why is it important?
ASIL D (Automotive Safety Integrity Level D) is the highest safety integrity level defined by ISO 26262 for automotive electrical systems. It requires comprehensive fault detection, monitoring, and safety mechanisms. PF09 is meant to meet ASIL D requirements with features like ABIST, fault monitoring, and redundant voltage references.
Use PF09 for any automotive application requiring ASIL D certification. Contact FAE for safety documentation.
What is ABIST and how does it work?
ABIST (Analog Built-In Self-Test) automatically tests the PMIC's analog circuits including voltage references, monitors, and comparators. It runs at power-up and can be triggered during operation. ABIST ensures the safety circuits themselves are functioning correctly, which is essential for ASIL D compliance.
Enable ABIST for all safety-critical applications. Results can be read via I2C for system diagnostics.
How does the window watchdog work?
The window watchdog requires the processor to respond within a specific time window (not too early, not too late). It uses a Q&A protocol where the PMIC sends a challenge and the processor must respond with the correct answer. This provides robust protection against software failures and clock issues.
Configure watchdog window based on system response time. Implement proper Q&A handling in software.
What safety documentation is available?
NXP provides comprehensive safety documentation for PF09 including Safety Manual, FMEDA (Failure Modes Effects and Diagnostics Analysis), and application notes for ASIL D designs. These documents are essential for system-level safety certification.
Request safety documentation early in design phase. Contact FAE for access to safety documents.
Can PF09 be used in non-automotive applications?
Yes, PF09 can be used in any application requiring high reliability and safety monitoring, including industrial safety controllers, medical devices, and railway systems. The ASIL D features provide robust protection regardless of the end application.
Consider PF09 for any safety-critical application, not just automotive. Features justify cost for high-reliability systems.