LEDA projects

Laboratory for Electronic Design Automation

IMPEG - An Integrated Power Meter IC

IMPEG solid state energy meter was developed and prototyped under financial support of Serbian Ministary of science, technology and development as a part of the project entitled: "Development of equipment and system for measurements and power supply control in industry". The project lasted from 01.01.2002. until 21.12.2004. Based on the strict demands of Mackatica, a.d. - the power meter producer - and with strong cooperation with Star Engineering - the unintegrated version designer - LEDA 008 is highly integrated CMOS power meter IC. It is designed to accurately measure and calculate: active reactive and apparent power and energy, power factor, IRMS, VRMS and frequency for 2 or 3 wire power meter applications.

Structure of LEDA 008

Single-phase power/energy meter IC IMPEG LEDA 008 (PROTOTYPE)

Features

• Energy data accuracy: Meets IEC 1036 (classes 1 and 2) and IEC 687 (classes 0,2 S and 0,5 S)
• On-chip functions: Active, Reactive and Apparent Power and Energy Measurement, Power Factor, Frequency, IRMS and VRMS, energy to pulse-rate conversion
• On-chip bandgap reference 1.205 V
• Calibration of Gain and Phase Error
• Measurement Bandwidth of 1800Hz
• Built-in self test
• Simple three wire serial interface
• Power supply VA=VD=3.3 V
• Dynamic range of 10000:1 in current and more than 100:1 in voltage channel

The detailed specifications of IMPEG LEDA 008 are given in .PDF format (195 kB) and require the Adobe ® Acrobat ® Reader. 

Description

A Practical Solution for Solid-state Energy Meter * , Predrag Petković

DSP part of IMPEG *, Milunka Damnjanović

* Based on Power Point presentations during Stability Pact of Southeastern Europe, DAAD, ISSN Project Meeting in Ohrid, 08. – 12.09.2003.

Development overview

		Timeline
	Final layout 250,000 transistors	The development started	January 2002
		Conceptual design finished	May 2003
		Design finished	December 2003
		Physical design verification	December 2003
		Prototypes finished	March 2004
		Laboratory test completed	June 2004
		Industrial testing started	September 2004

Scientific results

The work on LEDA 008 development resulted in some scientific papers. The list of related papers can be obtained from LEDA publications database

Final report

The final report (in Serbian) to the Republic department of science, development and ecology can be found here.

Testing the chip: block by block	Operative testing of the chip

A short video clip about IMPEG chip (broadcasted by Serbian national TV on 13 february 2007) can be seen here.