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Microchip Technology PAC1711 Single-Channel Power Monitor

Microchip PAC1711 Single-Channel Power Monitor is a single-channel energy monitor with a bus-voltage monitor and a current-sense amplifier that feeds a single 12-bit-resolution ADC. The device is designed for high-side current sensing, and the digital circuitry performs power calculations and energy accumulation. This feature enables energy monitoring with integration periods up to one year or longer. The system host or embedded controller can retrieve sense resistor voltage, bus voltage, and accumulated proportional power from registers. The device includes an alert system that generates alerts when it detects voltage, current, or power excursions with up to two alert pins. The sampling rate and energy integration period can be controlled over I2C or SMBus. One-shot measurements and other controls can also be configured via SMBus or I2C. The Microchip PAC1711 uses real-time calibration to minimize offset error. No input filters are required for this device. Built-in adjustable averaging delivers very low-noise, high-resolution measurement results.

Features

  • High-side/low-side power monitor
    • 100mV full-scale range (configurable to 50mV)
    • External sense resistor sets the full-scale range current
  • 12-bit resolution sense current (voltage monitor with wide VBus range)
  • 0V to 42V FSR range (configurable to 21V)
  • 1% power measurement accuracy over a wide dynamic range
  • On-chip accumulation of 32-bit power results for energy measurement with user programmable sampling rates of 8, 64, 256, 1024, 4096, 8192
  • Real-time auto-calibration of offset error for voltage and current
  • 2.7V to 5.5V supply operation range
    • 1.62V to 5.5V capable I2C/SMBus and digital I/O
    • SMBus 3.1 and I2C Fast Mode Plus, 1Mbps
    • High speed mode (3.4Mbps)
  • ALERT on over/undervoltage and current or overpower conditions
    • Alert output option(s)
    • Coulomb counting (when selected, the accumulator accumulates VSENSE values)

Applications

  • Low current general-purpose applications
  • Battery-powered applications
  • Portable and embedded computing
  • Smart home and smart city applications
  • USB Type-A, Type-B, and Type-C connectivity
  • Networking
  • Automotive
  • Internet of Things (IoT)

Videos

Functional Block Diagram

Block Diagram - Microchip Technology PAC1711 Single-Channel Power Monitor

Related Power Monitor

Microchip Technology PAC1811 Single-Channel Power Monitor

Comes with a bus-voltage monitor and a current-sense amplifier that feeds a 16-bit-resolution ADC.

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發佈日期: 2026-01-26 | 更新日期: 2026-02-05