Back to Monolithic Power Systems (MPS)

Monolithic Power Systems (MPS) MPQ79500 MPSafe™ 6-Channel ASIL-D Voltage Monitor

Monolithic Power Systems (MPS) MPQ79500 MPSafe™ 6-Channel ASIL-D Voltage Monitor is designed for automotive applications requiring precise voltage rail monitoring, like ADAS, and autonomous driving platforms. Each input features configurable over-voltage (OV) and under-voltage (UV) thresholds, enabling accurate high-frequency (HF) and low-frequency (LF) voltage detection. Two inputs are differential, remote voltage-sensing pairs ideal for monitoring high-current voltage rails. A low-power mode (LPM) option minimizes quiescent current.

The device records voltage rail sequencing/timestamps and supports synchronization via a sync I/O function, allowing multiple devices to monitor additional rails. Communication is managed through an I2C interface. Functional safety features include built-in self-testing (BIST), diagnostics, and write protection, supporting applications up to ASIL-D. The MPQ79500FS is offered in a compact QFN-16 (3mm x 3mm) package with wettable flanks and is AEC-Q100 Grade 1 qualified.

Features

  • Designed for Automotive Advanced Driver-Assistance System (ADAS) and autonomous driving platforms
    • 2.7V to 5.5V input voltage (VIN) range
    • Six voltage monitor inputs, four single-ended, two differential
    • Absolute Over-Voltage (OV)/Under-Voltage (UV) thresholds for high-frequency and low-frequency components
      • 0.2V to 1.475V, 5mV/Step
      • 0.8V to 5.5V, 20mV/Step
    • High DC accuracy
      • >1V, ±0.5%
      • <1V, ±5mV
  • Analog-to-Digital Converter (ADC) for voltage-level readback
  • Selectable High-Power Mode (HPM) and Low-Power Mode (LPM)
  • Power sequence recording for power-on, power-off, and sleep entry/exit
  • SYNC I/O for multi-device sequence synchronization
  • Write protection for critical registers
  • Functional safety
    • Built-In Self-Testing (BIST)
    • Interrupt output pin (fault reporting)
    • Cyclic Redundancy Check (CRC) protection on registers
    • Supports systems up to ASIL-D
    • ISO 26262 functional safety certified
  • Flexible application with I2C interface
    • I2C interface with PEC
    • One-Time Programmable (OTP) memory
  • Additional features
    • Available in a QFN-16 (3mm x 3mm) package with 0.5mm pitch and wettable flanks
    • Available in AEC-Q100 Grade 1

Applications

  • Advanced Driver Assistance Systems (ADAS)
  • Autonomous driving platforms
  • Functional safety systems with multiple power rails
  • Industrial robotics

TYPICAL APPLICATION

Application Circuit Diagram - Monolithic Power Systems (MPS) MPQ79500 MPSafe™ 6-Channel ASIL-D Voltage Monitor

Evaluation Board

Monolithic Power Systems (MPS) EVQ79500FS Evaluation Board

Showcases the capabilities of the MPQ79500FS 6-channel voltage monitor.

Learn Moreabout Monolithic Power Systems (MPS) EVQ79500FS Evaluation Board View Productsrelated to Monolithic Power Systems (MPS) EVQ79500FS Evaluation Board

Additional Resources

Published: 2025-01-10 | Updated: 2025-01-22