19-5348; Rev 3/11
78M6613
Single-Phase
AC Power Measurement IC
A Maxim Integrated Products Brand
DATA SHEET
March 2011
DS_6613_018
DESCRIPTION
FEATURES
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.
• < 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)
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
• 8-Bit MPU (80515), One Clock Cycle per
Instruction with 2KB MPU XRAM
• 32KB Flash with Security
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.
• Integrated In-Circuit Emulator (ICE) Interface
for MPU Debug
• 32kHz Time Base with Hardware Watchdog
Timer
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.
• 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
LIVE
Earth Ground
Isolated Supply
NEUT
o
o
Accumulated Watt-Hours, Kilowatt-Hours
Intelligent Switch Control at Zero
Crossings
CONVERTER
V3P3
GND
o
o
o
o
Digital Temperature Compensation
Phase Compensation (±15°)
Quick Calibration Routines
46–64Hz Line Frequency Range with
Same Calibration
A0
A1
A2
A3
TERIDIAN
78M6613
REGULATOR
DIO, PULSE
VOLTAGE REF
2KB RAM
VREF
DIO 4-8
DIO 14-17, 19
32KB
FLASH
TEMP
SERIAL PORT
32-bit
COMPUTE
ENGINE
SENSOR
TX
RX
OSC/PLL
80515
MPU
ICE
XIN
32 kHz
V3P3
GND
ICE_E
XOUT
TIMERS
Single Converter Technology is a registered trademark of Maxim
Integrated Products, Inc.
Rev. 1.1
© 2011 Teridian Semiconductor Corporation
1