Data brief

For further information contact your local STMicroelectronics sales office.

June 2010

Doc ID 17456 Rev 1

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STEVAL-IPE010V1

Energy meter demonstration kit

motherboard based on the STPMC1 and STPMS1

Features

Description

The purpose of the demonstration kit is to provide

an evaluation platform for the STPMC1 and

STPMS1 devices, but it can also be used as a

starting point to design a Class 1 meter for 2 to 4-

wire power line systems using delta or wye

service.

The STPMC1 is a metering ASSP implemented

through an advanced 0.35 µm BCD6 technology.

The STPMS1 is an ASSP designed as a building

block for single or multi-phase energy meters.

The kit is made up of the STEVAL-IPE010V1

motherboard with the STPMC1 mounted, and up

to 5 daughterboards (order code STEVAL-

IPE011V1), each with an STPMS1 mounted to

sense the voltage and current of each phase.

Each phase is monitored by an independent

daughterboard, in which an autonomous power

supply is provided to the board itself and, once it

is connected, also to the motherboard.

On this board, the STPMS1 device senses the

phase current through a CT or a shunt sensor,

and the phase voltage through a voltage divider.

The presence of dedicated networks greatly

reduces the sampling (aliasing) noise and the

crosstalk noise between voltage and current

channels, increasing meter precision. The

STPMS1 produces a sigma-delta stream, sent

together with the supply voltage, to the STPMC1

through a card edge connector.

The motherboard receives the sigma-delta

streams from the daughterboards which are

further elaborated by the STPMC1. This device,

from a 4.194 MHz crystal oscillator, provides a

common clock with programmable frequency to

all the daughterboards.

The motherboard, through a 10-pin flat cable

connector, can be interfaced to a microprocessor

board to implement advanced metering features

(multi-tariff, data management and storage,

communication, etc). It also has stepper motor

connectors for simple energy meter

implementation.

STEVAL-IPE010V1

www.st.com

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- Obsolete

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