Power Monitoring

Features

  • 2 Families of high-side current sensors
  • Bi-directional current measurement with 1% accuracy
  • Configurable sample time from 2.5ms to 320ms with averaging effective sample times up to 2.6s
  • Calculates proportional power
  • User defined alarms for temperature, voltage, and out-of-current limit reporting
  • Internal temperature monitor ±1°C accuracy
  • Integrated input filters
  • Auto-zero input voltage offset
  • Vsource voltage range up to 40V
  • Address selectable SMBus 2.0 and I2C interfaces
  • Down to 3x3 mm DFN-10 package

Application

The PAC1710 is a high-side bi-directional current sensing monitor with precision voltage measurement capabilities. The power monitor measures the voltage developed across tan external sense resistor to represent the high-side current of a battery ofr voltage regulator. It also measures the SENSE+ pin voltage and calculate average power over the integration period. It can be programmed to assert the ALERT pin when high and low limits are exceeded for current sensing and bus voltage.

Block Diagram

Click image to enlarge

Markets

  • Tablets
  • Notebook & desktop computers
  • Industrial
  • Power management systems

Products

  PAC1710 PAC1720 EMC1701 EMC1702 EMC1704
Interface I2C SMBus I2C SMBus I2C SMBus I2C SMBus I2C SMBus
Voltage Range 0 – 40V 0 – 40V 3-24V 3-24V 3-24V
Iq(Typ)(uA) 15 Stdby
0.5mA Read		 15 Stdby
0.5mA Read		 300 Stdby
1.1mA Read		 300 Stdby
1.1mA Read		 300 Stdby
1.1mA Read
Current Shunt Sensors 1 1 1 1 1
Current Accuracy (±max ) 1% 1% 1% 1% 1%
Alert Pin/Thermal Pin 1/0 1/0 1/1 1/1 1/1
Thermal Sensors: Internal/Remote 0/0 0/0 1/0 1/1 1/3
Configurable Peak Detect Alert - - Threshold & Duration Threshold & Duration Threshold & Duration
Input Filters Integrated Integrated Integrated Integrated Integrated
Address Pin Yes Yes Yes Yes Yes
Digital Averaging 2x, 4x,or 8x 2x, 4x,or 8x 2x, 4x, or 8x 2x, 4x, or 8x 2x, 4x, or 8x
Range of Effective Sample Times 2.5ms-2.6sec 2.5ms-2.6sec 2.5ms-2.6sec 2.5ms-2.6sec 2.5ms-2.6sec
Pin/Package 3x3 DFN-10 3x3 DFN-10 4x4 QFN-12
MSOP-10		 4x4QFN-12 SOIC-14
4x4 QFN-16