Microchip MCP39F521 Handleiding

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 2015 Microchip Technology Inc.DS20005442A-page 1

MCP39F521

Features

•Power Monitoring Accuracy Capable of 0.1%

Error Across 4000:1 Dynamic Range

•Built-In Calculations on Fast 16-bit Processing

Core

-Active, Reactive, Apparent Power

-True Root Mean Square (RMS) Current,

RMS Voltage

-Line Frequency, Power Factor

•64-bit Wide Import and Export Active Energy

Accumulation Registers

•64-bit Four Quadrant Reactive Energy

Accumulation Registers

•Signed Active and Reactive Power Outputs

•Dedicated Zero Crossing Detection (ZCD) Pin

Output with Less than 100 µs Latency

•Automatic Event Pin Control through Fast Voltage

Surge Detection, Less than 5 ms Delay

• I2C Interface, up to 400 kHz Clock Rate

•Two Independent Registers for Minimum and

Maximum Output Quantity Tracking

•Fast Calibration Routines and Simplified

Command Protocol

•512 Bytes User-Accessible EEPROM through

Page Read/Write Commands

•Low-Drift Internal Voltage Reference,

10 ppm/°C Typical

•28-lead 5 x 5 mm QFN Package

•Extended Temperature Range -40°C to +125°C

Applications

•Power Monitoring for Home Automation

•Industrial Lighting Power Monitoring

•Real-Time Measurement of Input Power for

AC/DC Supplies

•Intelligent Power Distribution Units

Description

The MCP39F521 is a highly integrated, complete

single-phase power-monitoring device, designed for

real-time measurement of input power for AC/DC

power supplies, power distribution units, consumer and

industrial applications. It includes dual-channel

delta-sigma ADCs, a 16-bit calculation engine,

EEPROM and a flexible two-wire I2C interface.

An integrated low-drift voltage reference with

10 ppm/°C in addition to 94.5 dB of signal-to-noise and

distortion ratio (SINAD) performance on each

measurement channel allows for better than 0.1%

accurate designs across a 4000:1 dynamic range.

Package Types

1

25

2

3

4

5

8910 1112

20

18

17

2827 2624

EVENT

NC

COMMONB

COMMONA

NC

NC

NC

AVDD

A0

RESET

DVDD

DGND

MCLR

EP

29

6

7

OSCI

OSCO

13 14

SCL

SDA

16

15

23 22

REFIN+/OUT

ZCD

I1+

I1-

V1-

V1+

AN_IN

AGND

DGND

A1

DR

MCP39F521

5x5 QFN*

*Includes Exposed Thermal Pad (EP); see Table 3-1.

19

21

I2C Power Monitor with Calculation and Energy Accumulation

Product specificaties