The 78M6612 is a highly integrated, single phase AC power measurement and monitoring (AC-PMON) IC for consumer and enterprise applications capable of 0.5% Wh
or better accuracy over 2000:1 current range and over temperature. Four analog inputs are provided for measuring up to two AC loads or wall outlets using Teridian’s
patented Single Converter Technology
™
and 32-bit computation engine (CE). The 78M6612 device also includes an 8-bit MPU core with 32KB of embedded FLASH, a
UART interface, and a number of GPIO for easy integration into any power supply or outlet monitoring unit. The 78M6612 is available in both 64-LQFP and 68-QFN lead
free package options and consumes roughly 30mW under typical operating conditions.
Complete firmware is available from Teridian supporting the serial UART interface for simplified calibration, configuration, and data extraction. Firmware options for
emulating I
2
C, PMBus, or SMBus interfaces using GPIO are also available. Firmware can be pre-loaded into the IC by Teridian or modified by customers as needed.
ORDERING INFORMATION:
78M6612-IGT/F (64-LQFP) or 78M6612-IM/F (68-QFN)
Single Phase AC
78M6612
Single Converter
Architecture
™
Multiplexers
32b Real-Time
Compute Engine (CE)
Calibration Commands
Configuration & Relay Control
AC
Load
Shunt
or CT
22b
ADC
2000:1
80515 MCU
Single Clock
/ Instruction
5 MHz
Temperature & Alarm Status
GPIO
Voltage, Current, & Line Frequency
2KB SRAM
32KB Flash
UART
Active, Reactive, & Apparent Power
Power Factor and Phase Angle
Temp Compensation
Interface Specific Code
80515 AC-PMON Post Processing
32-bit Compute Engine (CE)
KEY FEATURES AND bENEFITS
>
Turnkey solution reduces development time and investment for adding AC power
metering into system power supply
>
Precision power measurement over a wide current dynamic range allows confirmation of
low power system operating modes down to 10mA
or failure
>
Line voltage and frequency measurements provide early warnings of AC source overload
>
Intelligent control of switches or relays at zero crossing increases reliability and
durability
>
Statistical data can be used to detect early failure of AC/DC power supply or type of
AC load being monitored
Application
>
Home and Commercial Automation
>
Computer Power Supplies
>
Communication Power Supplies
78M6612 Product Brief
78M6612 Outlet Monitoring Unit Demo
Teridian’s 78M6612 Outlet Measurement Unit (OMU) is a compact demonstration unit employing the 78M6612
SOC. The 78M6612 monitors the AC line voltages, frequency, and load current. The embedded firmware
calculates items such as RMS line voltage and RMS load current, watts, VA, VAR and power factor. The real time
data is transmitted via the serial interface to a PC for display in a Windows
®
based Graphical User Interface
(GUI). The USB interface is used as the communications link and also supplies power to the OMU.
ORDERING NUMbER:
78M6612-DB/OMU-USB
The Windows
®
GUI provides the following controls and information:
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>
>
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Power, current, voltage and power factor indicator dials
Adjustable display scales
Minimum and peak parameter tracking
Selectable strip chart display format
Narrow-band vs Wide-band measurement
Selectable sample size averaging
Line Frequency measurement
Alarm Status Indicators
AC-PMON Evaluation Board
The 78M6612 AC-PMON evaluation board is the quickest way to integrate energy measurement or power monitoring into
any application. These boards are reduced in size and include all the necessary isolation components for the 5V supply and
communications interface. Multiple firmware or interface options are available.
ORDERING NUMbER:
78M6612-EVM-1
To Power Supply
To 5VDC Standy and PMBus
An example test setup for server PSU
The AC-PMON board can also serve as a prototyping platform for optional software development and debug. Contact Teridian
for more information on recommended Keil 80515 Compiler Kits, Signum Systems In Circuit Emulator (ICE), and Teridian’s TFP2
Flash Programming Modules for programming production quantities.
For more information about Teridian products and the name of a local representative or distributor,
visit
www.teridian.com
or call +1 714-508-8800
6440 Oak Canyon, Ste 100, Irvine, CA 92618-5201
+1 714-508-8800 (Tel)
+1 714-508-8878 (Fax)
No responsibility is assumed by Teridian Semiconductor Corporation for use of this product nor for any infringements of patents and trademarks or
other rights of third parties resulting from its use. No license is granted under any patents, patent rights or trademarks of Teridian Semiconductor
Corporation, and the company reserves the right to make changes in specifications at any time without notice. Accordingly, the reader is cautioned
to verify that the data sheet is current before placing orders.
