Microchip Technology Inc
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PAC1934

Quad DC Power Monitor with Accumulation

Status: In Production

Features:

  • 100 mV full scale voltage sense range, 16-bit resolution
  • Bidirectional or unidirectional options
  • Wide Bus Voltage Measurement Range 0V to 32V, 16-Bit Resolution
  • 1% Power Measurement Accuracy Over a Wide Dynamic Range
  • 48-bit power accumulator register for recording data
  • 24-bit accumulator count
  • User programmable sampling rates of 8, 64, 256, 1024 samples per second
  • 36 hours of power data accumulation at 8 samples per second
  • 2.7V to 5.5V Supply Operation
  • Separate I/O Pin for Digital I/O 1.62-5.5V
  • I2C® Fast Mode Plus (1Mp/S) and SMBus 3.0
  • WLCSP package (2.225 x 2.17)
  • WIN10 laptop, tablet, workstation, cell phone
  • Networking
  • Automotive
  • Linux® Systems
  • Linux, Microsoft®, and Cloud Servers
  • Industrial
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The PAC1934 is a four channel power/energy monitor with current sensor amplifier and bus voltage monitors that feed high resolution ADCs.  Digital circuitry performs power calculations and energy accumulation.  The PAC1934 enables energy monitoring with integration periods from 1 ms to up to 36 hours.  Bus voltage, sense resistor voltage, and accumulated proportional power are stored in registers for retrieval by the system master or embedded controller.

The sampling rate and energy integration period can be controlled over SMBus or I2C.  Active channel selection, one-shot measurements, and other controls are also configurable.  The PAC1934 uses real time calibration to minimize offset and gain errors.  No input filters are required for this device.

For product comparison, please consider: PAC1934

Additional Features
    • High-Side Current Sensor (4 Channels)
      • 100 mV full scale voltage sense range, 16-bit resolution
      • Bidirectional or unidirectional options
    • Wide Bus Voltage Measurement Range 0V to 32V, 16-Bit Resolution
    • 1% Power Measurement Accuracy Over a Wide Dynamic Range
    • On-Chip Accumulation of 28-Bit Power Results for Energy Measurement
      • 48-bit power accumulator register for recording data
      • 24-bit accumulator count
      • User programmable sampling rates of 8, 64, 256, 1024 samples per second
      • 36 hours of power data accumulation at 8 samples per second
    • 2.7V to 5.5V Supply Operation
    • Separate I/O Pin for Digital I/O 1.62-5.5V
    • I2C® Fast Mode Plus (1Mp/S) and SMBus 3.0
    • WLCSP package (2.225 x 2.17)

    Applications

    • WIN10 laptop, tablet, workstation, cell phone
    • Networking
    • Automotive
    • Linux® Systems
    • Linux, Microsoft®, and Cloud Servers
    • Industrial
Parametrics
Name
Value
# Current Sensors
4
Description
Quad DC Power sensor wtih Accumulator
Full Scale Range (mV)
100
Current Measuerment Max Accr (%)
0.9
Effective Sampling Interval min to max (msec)
0.98 to 125
Bus Voltage Range (V)
0 to +32
# Temperature Monitors (ambient, remote)
N/A
Temperature Accuracy Typ / Max (°C)
N/A
Alert/Therm
1
Peak Detection
N/A
Interface
SMBus/I2C
Address Select
yes

Documents

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Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
PAC1934 4 Ch DC Power Monitor Eval Board
PAC1934 4 Ch DC Power Monitor Eval Board ( ADM00805 )

This board enables easy connection of the PAC1934 to power sources and loads for power monitoring and energy metering. On-board current sense resistors for high side current sensing. It has USB connection to PC for power and data, or you may use I2C direct connection to your digital controller. On board square wave current generator for demo purposes. GUI available, detailed User's Guide.

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RoHS Information

Part Number
Device Weight
Shipping Weight
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
PAC1934T-I/JQ
0.022500
0.181818
16
UQFN
4x4x0.5mm
Matte Tin
e3
Rohs icon
efup china icon
PAC1934T-I/J6CX
0.004500
0.100000
16
WLCSP
2.215x2.16x0.7mm
SAC405
e4
Rohs icon
efup china icon
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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