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Microchip Technology PAC1710/20 Current Sensing Monitors

Microchip PAC1710/20 Current Sensing Monitors are single (PAC1710) or dual (PAC1720) high-side bidirectional current sensing monitors with precision voltage measurement capabilities. Each sensor measures the voltage developed across an external sense resistor to represent the high-side current of a battery or voltage regulator. The PAC1710/20 also measures the SENSE+ pin voltage and calculates average power over the integration period. The PAC1710/20 can be programmed to assert the ALERT pin when high and low limits are exceeded for Current Sense and Bus Voltage.

The Microchip PAC1710/20 device is good for measuring dynamic power. The long integration time allows for extending system polling cycles without losing any power consumption information. In addition, the alert ensures that transient events are captured between the polling cycles. Available in a RoHS compliant 3mm x3 mm 10-pin VDFN package.

Features

  • Single (PAC1710) and dual (PAC1720) high-side current sensor
    • Current measurement is integrated over 2.5ms to 2.6 seconds with up to 11-bit resolution
    • 1% current measurement accuracy in the positive range
    • Measures VSOURCE voltages
  • Calculates power
  • VSOURCE voltage range 0V to 40V
  • Bidirectional current sensing
  • Auto-zero input offset voltage
  • Digital averaging
    • Adjustable sampling time and resolution
  • 5µA typical standby current
  • Programmable sense voltage range
    • ±10mV, ±20mV, ±40mV, and ±80mV
  • 3.0V to 5.5V power supply range
  • -40°C to +85°C wide temperature operating range
  • ALERT output for voltage and current out of limit transients between sampling interval
  • SMBus 2.0 communications interface
    • Block read and block write
    • Address selectable by resistor decode
  • Sample time configurable from 2.5ms to 320ms
    • With averaging effective sampling times up to 2.6 seconds
  • 10-lead 3mm x 3mm VDFN package

Applications

  • Notebook and desktop computers
  • Industrial
  • Power management systems
  • Embedded applications
  • Servers

Block Diagram

Block Diagram - Microchip Technology PAC1710/20 Current Sensing Monitors
Published: 2021-06-17 | Updated: 2022-03-11