
78M6613
Single-Phase
AC Power Measurement IC
DATA SHEET
DS_6613_018
March 2011
Rev. 1.1
2011 Teridian Semiconductor Corporation
1
A Maxim Integrated Products Brand
19-5348; Rev 3/11
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.
80515
MPU
TIMERS
A0
A1
XIN
XOUT
VREF
TX
RX
V3P3
GND
DIO 4-8
DIO 14-17, 19
ICE
SERIAL PORT
OSC/PLL
CONVERTER
DIO, PULSE
32-bit
COMPUTE
ENGINE
32KB
FLASH
2KB RAM
VOLTAGE REF
REGULATOR
Earth Ground
Isolated Supply
TERIDIAN
78M6613
32 kHz
LIVE
NEUT
ICE_E
GND
V3P3
TEMP
SENSOR
A2
A3
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
Single Converter Technology is a registered trademark of Maxim
Integrated Products, Inc.