78M6613 Power Measurement Datasheet

78M6613 Datasheet, PDF, Equivalent


Part Number

78M6613

Description

Single-Phase AC Power Measurement

Manufacture

Maxim Integrated

Total Page 30 Pages
Datasheet
Download 78M6613 Datasheet


78M6613
19-5348; Rev 2; 1/12
AVAILABLE
DS_6613_018
DESCRIPTION
The Teridian™ 78M6613 is a highly integrated IC for
simplified implementation of single-phase AC power
measurement into power supplies, smart appliances, and
other applications with embedded AC load monitoring and
control. It is packaged in a small, 5mm x 5mm, 32-pin QFN
package for optimal space savings.
At the measurement interface, the device provides four
analog inputs for interfacing to voltage and current sensors.
Voltages from the sensors are fed to our Single Converter
Technology® that uses a 22-bit delta-sigma ADC,
independent 32-bit compute engine (CE), digital
temperature compensation, and precision voltage
references to provide better than 0.5% power measurement
accuracy over a wide 2000:1 dynamic range.
The integrated MPU core and 32 KB of flash memory
provides a flexible means of configuration, post-processing,
data formatting, and interfacing to any host processor
through the UART interface and/or DIO pins. Complete
application firmware is available and can be preloaded into
the IC during manufacturing test. Alternatively, a complete
array of ICE, development tools, and programming libraries
are available to allow customization for each application.
LIVE Functional Diagrams
NEUT
Earth Ground
Isolated Supply
CONVERTER
A0
V3P3
GND
A1 TERIDIAN
A2 78M6613 REGULATOR
A3
VOLTAGE REF
VREF
TEMP
2KB RAM
32KB
FLASH
DIO, PULSE
DIO 4-8
DIO 14-17, 19
SERIAL PORT
SENSOR
OSC/PLL
32-bit
COMPUTE
ENGINE
TX
RX
80515
32 kHz
XIN MPU
Pin Configurations appear aXtOUeTnd of dataTsIMhEeRSet.
ICE
ICE_E
Functional Diagrams continued at end of data sheet.
UTreeCgrSiisdPtiearnisedaisttrraaaddteremamdaearmkrkaoorfkfMMaanxadixmimSIninItnegtgleergaCtreaodtnePvderoPrtdreuorcdtTusec,ctInsh,cn.Ionlocg. y is a
V3P3
GND
78M6613
Single-Phase
AC Power Measurement IC
DATA SHEET
FEATURES
< 0.5% Wh Accuracy Over Wide 2000:1
Current Range and Over Temperature
Voltage Reference < 40ppm/°C
Four Sensor Inputs—V3P3A Referenced
22-Bit Delta-Sigma ADC with Independent
32-Bit Compute Engine (CE)
8-Bit MPU (80515), One Clock Cycle per
Instruction with 2KB MPU XRAM
32KB Flash with Security
Integrated In-Circuit Emulator (ICE) Interface
for MPU Debug
32kHz Time Base with Hardware Watchdog
Timer
UART Interface and Up to 10 General-
Purpose 5V Tolerant I/O Pins
Packaged in a RoHS-Compliant (6/6)
Lead(Pb)-Free, 32-Pin QFN (5mm x 5mm)
Complete Application Firmware Provides:
o True RMS Calculations for Current,
Voltage, Line Frequency, Real Power,
Reactive Power, Apparent Power, and
Power Factor
o Accumulated Watt-Hours, Kilowatt-Hours
o Intelligent Switch Control at Zero
Crossings
o Digital Temperature Compensation
o Phase Compensation (±15°)
o Quick Calibration Routines
o 46–64Hz Line Frequency Range with
Same Calibration
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

78M6613
78M6613 Data Sheet
DS_6613_018
Table of Contents
1 Hardware Description....................................................................................................................5
1.1 Hardware Overview ................................................................................................................5
1.2 Analog Front End (AFE)..........................................................................................................6
1.2.1 Input Multiplexer..........................................................................................................6
1.2.2 A/D Converter (ADC) ..................................................................................................6
1.2.3 FIR Filter.....................................................................................................................6
1.2.4 Voltage References.....................................................................................................6
1.2.5 Temperature Sensor ...................................................................................................7
1.2.6 Functional Description.................................................................................................7
1.3 Digital Computation Engine (CE) ............................................................................................ 8
1.4 80515 MPU Core ....................................................................................................................8
1.4.1 UART ..........................................................................................................................8
1.4.2 Timers and Counters...................................................................................................9
1.5 On-Chip Resources.................................................................................................................9
1.5.1 Oscillator.....................................................................................................................9
1.5.2 PLL and Internal Clocks .............................................................................................. 9
1.5.3 Temperature Sensor ...................................................................................................9
1.5.4 Flash Memory .............................................................................................................9
1.5.5 Digital I/O.................................................................................................................. 10
1.5.6 Hardware Watchdog Timer........................................................................................ 10
1.5.7 Program Security ...................................................................................................... 10
1.5.8 Test Ports.................................................................................................................. 10
2 Functional Description................................................................................................................ 11
2.1 Theory of Operation.............................................................................................................. 11
2.2 Reset Behavior ..................................................................................................................... 12
2.3 Data Flow ............................................................................................................................. 12
2.4 CE/MPU Communication ...................................................................................................... 13
3 Application Information .............................................................................................................. 14
3.1 Connection of Sensors (CT, Resistive Shunt)........................................................................ 14
3.2 Temperature Measurement................................................................................................... 15
3.3 Temperature Compensation.................................................................................................. 15
3.4 Connecting 5V Devices......................................................................................................... 16
3.5 UART (TX/RX) ...................................................................................................................... 16
3.6 Reset Function and Reset Pin Connections........................................................................... 16
3.7 Connecting the Emulator Port Pins ....................................................................................... 18
3.8 Crystal Oscillator................................................................................................................... 19
3.9 Flash Programming .............................................................................................................. 19
3.10 MPU Firmware Library .......................................................................................................... 19
3.11 Measurement Calibration ...................................................................................................... 19
4 Electrical Specifications ............................................................................................................. 20
4.1 Absolute Maximum Ratings .................................................................................................. 20
4.2 Recommended External Components................................................................................... 21
4.3 Recommended Operating Conditions.................................................................................... 21
4.4 Performance Specifications .................................................................................................. 21
4.4.1 Input Logic Levels ..................................................................................................... 21
4.4.2 Output Logic Levels .................................................................................................. 21
4.4.3 Supply Current .......................................................................................................... 22
4.4.4 Crystal Oscillator....................................................................................................... 22
4.4.5 VREF ........................................................................................................................ 22
4.4.6 ADC Converter, V3P3 Referenced ............................................................................ 23
4.4.7 Temperature Sensor ................................................................................................. 23


Features 19-5348; Rev 2; 1/12 AVAILABLE DS_6613 _018 DESCRIPTION The Teridian™ 78M66 13 is a highly integrated IC for simpli fied implementation of single-phase AC power measurement into power supplies, smart appliances, and other application s with embedded AC load monitoring and control. It is packaged in a small, 5mm x 5mm, 32-pin QFN package for optimal space savings. At the measurement inter face, the device provides four analog i nputs for interfacing to voltage and cu rrent sensors. Voltages from the sensor s are fed to our Single Converter Techn ology® that uses a 22-bit delta-sigma ADC, independent 32-bit compute engine (CE), digital temperature compensation, and precision voltage references to pr ovide better than 0.5% power measuremen t accuracy over a wide 2000:1 dynamic r ange. The integrated MPU core and 32 KB of flash memory provides a flexible me ans of configuration, post-processing, data formatting, and interfacing to any host processor through the UART interface and/or DIO pins. Comple.
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