MAX78615-LMU 데이터 시트보기 (PDF) - Maxim Integrated

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MAX78615-LMU

Isolated Energy Measurement Processor for Load Monitoring Units

Maxim Integrated 

MAX78615+LMU Data Sheet

Table of Contents

ABSOLUTE MAXIMUM RATINGS...........................................................................................................................5

RECOMMENDED EXTERNAL COMPONENTS .........................................................................................................5

RECOMMENDED OPERATING CONDITIONS .........................................................................................................5

PERFORMANCE SPECIFICATIONS ..........................................................................................................................6

Pin Configuration ................................................................................................................................................... 9

Package Information...........................................................................................................................................10

On-Chip Resources Overview............................................................................................................................... 11

Block Diagram .....................................................................................................................................................11

Clock Management.............................................................................................................................................12

Power-On and Reset Circuitry ............................................................................................................................13

Watchdog Timer .................................................................................................................................................13

Pulse Transformer Interface ...............................................................................................................................14

24-Bit Energy Measurement Processor (EMP) ...................................................................................................14

Flash and RAM .........................................................................................................................................14

Multipurpose DIOs..............................................................................................................................................14

Communication Interface ........................................................................................................................14

Functional Description and Operation ................................................................................................................. 15

Measurement Interface......................................................................................................................................15

AFE Input Multiplexer ..............................................................................................................................15

High Pass Filters and Offset Removal.......................................................................................................16

Gain Correction ........................................................................................................................................17

Die Temperature Compensation..............................................................................................................17

Phase Compensation ...............................................................................................................................18

Voltage Input Configuration.....................................................................................................................19

Current Input Configuration ....................................................................................................................21

Data Refresh Rates .............................................................................................................................................23

Scaling Registers .................................................................................................................................................23

Calibration Routines ...........................................................................................................................................24

Voltage and Current Gain Calibration ......................................................................................................24

Offset Calibration .....................................................................................................................................24

Die Temperature Calibration ...................................................................................................................24

Voltage Channel Measurements ........................................................................................................................25

Quadrature Voltage .................................................................................................................................25

Voltage Frequency ...................................................................................................................................25

Peak Voltage ............................................................................................................................................25

RMS Voltage.............................................................................................................................................26

Current Channel Measurements ........................................................................................................................26

Peak Current ............................................................................................................................................26

RMS Current.............................................................................................................................................27

Crest Factor..............................................................................................................................................27

Power Calculations .............................................................................................................................................28

Active Power (P).......................................................................................................................................28

Reactive Power (Q) ..................................................................................................................................29

Apparent Power (S)..................................................................................................................................29

Power Factor (PF).....................................................................................................................................29

Fundamental and Harmonic Calculations...........................................................................................................30

Energy Calculations.............................................................................................................................................31

Bucket Size for Energy Counters ..............................................................................................................31

Min/Max Tracking...............................................................................................................................................33

Alarm Monitoring ...............................................................................................................................................34

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