MPQ70331FS-AEC1数据手册MPS中文资料规格书

描述 Description

The MPQ70331FS-AEC1 is an ASIL-D compliant power management integrated circuit (PMIC) with advanced safety features for automotive applications. It consists of a high-voltage (HV) primary synchronous buck converter, a low-voltage (LV) secondary synchronous buck converter, and a synchronous boost converter with excellent transient response.

Voltage monitoring is implemented via a voltage supervisor to monitor the battery input voltage (VIN), output rails, and two external channels, along with critical internal voltage signals, including the VCC voltage (VCC) and bandgap reference. Clock monitoring, leakage monitoring, and thermal monitoring are also implemented.

Built-in self-testing (BIST) is included for critical analog and logic functions. A failsafe state machine manages fault handling and controls the safety outputs. An integrated, configurable watchdog can be configured in window and Q&A modes. The safety-related blocks have independent voltage regulators, bandgaps, and oscillators, which offer redundancy to achieve failsafe operation.

The serial peripheral interface (SPI) allows for flexibility through configurability. The one-time programmable (OTP) memory allows settings to be permanently stored. SPI transactions and the data in the registers and OTP are protected via cyclic redundancy check (CRC).

The MPQ70331FS-AEC1 is available in a TQFN-34 (6mmx6mm) package, and it is AEC-Q100 qualified.

特性 Features

• Built for Tough Automotive Transients:
• Load Dump Up to 45V
• Cold Crank Down to 4.5V

• Optimized Board Size and BOM:
• 3A High-Voltage (HV) Buck Regulator
• 2A Low-Voltage (LV) Buck Regulator
• 250mA LV Boost Regulator

• Optimized for EMC/EMI:
• Configurable Fixed Switching Frequency (fSW) from 0.38MHz to 2.5MHz
• Frequency Spread Spectrum (FSS) for EMI Reduction
• CISPR 25 Class 5 Compliant

• Advanced Monitoring:
• Window or Q&A Watchdog
• Battery Failure Pre-Warning
• Microcontroller Unit (MCU) Alive Detection
• Clock Monitoring
• Reset and Interrupt to the MCU
• Error Input Signal Monitoring
• Diagnostic Output Pin
• Short-Circuit Protection (SCP) and Over-Current Protection (OCP)
• Thermal Warning and Shutdown

• Functional Safety:
• Built-In Self-Testing (BIST)
• Hardware Capability Up to ASIL-D
• Documents Available for ISO26262 System Design to ASIL-D
• Failure Modes Effects and Diagnostic Analysis (FMEDA)
• Safety Manual

• Additional Features:
• Buffered Voltage Reference Output
• Serial Peripheral Interface (SPI) with Cyclic Redundancy Check (CRC)
• One-Time Programmable (OTP) Memory
• Available in a TQFN-34 (6mmx6mm) Package with Wettable Flanks
• Available in AEC-Q100 Grade 1

• MPSafeTM: Developed for Functional Safety Applications: ISO 26262 Compliant