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Analog

Power Monitoring

Systems designers know that before they can manage power, they first need to measure it. These power monitoring ICs measure power, voltage and current while providing the calculated power over an I2C interface.

These I2C power monitors are based on the traditional high-side current sensor. The current monitors can measure voltage rails from 0V to 40V. Several high-power devices also come with temperature sensors for thermal management.

Microchip's Power/Current Sensor Devices

  • Calculates power
  • No filter circuits required
  • Sampling intervals up to 2 seconds
  • Peak detection with duration setting

Featured Power Current Sensors

PAC1921

PAC1921-FlipFlop3-VDFN-10Pin

  • Digital and analog output for prototyping
  • 1% Power measurement accuracy
  • Integrated average power measurement
EMC1702

EMC1702-Tele-QFN-12Pin

  • High-side current sensor
  • 3V to 24V voltage bus voltage range
  • 1% current measurement accuracy
PAC1934

PAC1934-FlipFlop4-WLCSP-16Pin_130

  • Quad power/current sensor
  • Accumulates reading for 36 hours
  • 1mA to 10A without configuration changes

Analog High-Side Current Monitors:

  • Supply 8.0 to 450V
  • Typical gain: 1.0 or 5.0
  • Max VSENSE 500 mV

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Tabs / Power/Current Monitors
Products
Reference Designs
Title Part Number Devices Supported
MCP3421 Weight Scale MCP3421DM-WS MCP3421, MCP6V07
MCP6N11/6V2X Wheatstone Bridge ARD00354 MCP6N11, MCP6V26, MCP6V27
MCP6031 Photodiode PICtail Plus MCP6031DM-PTPLS MCP6031
MCP661 Line Driver Demo Board MCP661DM-LD MCP661
Thermocouple Auto-Zeroed Reference Design MCP6V01RD-TCPL MCP6V01, MCP9800
MCP6SX2 PGA Thermistor MCP6SX2DM-PCTLTH MCP6S22, MCP6S92
RTD Temp Sensor TMPSNS-RTD1 MCP3301, MCP41010, MCP6S26, PIC18F2550
Humidity Sensor PICtail PIC16F690DM-PCTLHS MCP6291, PIC16F690

Power/Current Monitors Video Channel