19-5348; Rev 3/11
A Maxim Integrated Products Brand
78M6613
Single-Phase
AC Power Measurement IC
DATA SHEET
DS_6613_018
DESCRIPTION
The 78M6613 is a highly integrated IC for simplified
implementation of single-phase AC power measurement
into power supplies, smart appliances, and ot her
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
NEUT
Earth Ground
Isolated Supply
March 2011
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
CONVERTER
A0
A1
A2
A3
V3P3
GND
TERIDIAN
78M6613
2KB RAM
32KB
FLASH
32-bit
COMPUTE
ENGINE
80515
MPU
TIMERS
REGULATOR
DIO, PULSE
DIO 4-8
DIO 14-17, 19
VOLTAGE REF
VREF
TEMP
SENSOR
OSC/PLL
XIN
XOUT
SERIAL PORT
TX
RX
ICE
ICE_E
V3P3
GND
32 kHz
Single Converter Technology is a registered trademark of Maxim
Integrated Products, Inc.
Rev. 1.1
© 2011 Teridian Semiconductor Corporation
1
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
