STPM01 datasheet(1/56 Pages) STMICROELECTRONICS

部件名	STPM01

功能描述	Programmable single phase energy metering IC

PDF	56 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 56 page

February 2007

Rev. 4

1/56

56

STPM01

Programmable single phase energy metering IC

with tamper detection

Feature summary

■ Active, reactive, apparent energies and RMS

values

■ Ripple free active energy pulsed output

■ Live and neutral monitoring for tamper

detection

■ Easy and fast digital calibration in only one

point over the whole current range

■ OTP for calibration and configuration

■ Integrated linear VREGS for digital and analog

supply

■ Selectable RC or crystal oscillator

■ Support 50÷60 HZ – IEC62052-11, IEC62053-

2x specification

■ Less than 0.1% error

■ Precision voltage reference:

1.23V and 30 ppm/°C Max

Description

The STPM01 is designed for effective

measurement of active, reactive and apparent

energy in a power line system using Rogowski

Coil, Current Transformer and Shunt sensors.

This device can be implemented as a single chip

1-phase energy meter or as a peripheral

measurement in a microcontroller based 1-phase

or 3-phase energy meter. The STPM01 consists,

essentially, of two parts: the analog part and the

digital part. The former, is composed by

preamplifier and 1st order

∆ ∑ A/D converter

blocks, Band gap voltage reference, Low drop

voltage regulator, the latter, is composed by

system control, oscillator, hard wired DSP and

SPI interface.

There is also an OTP block, which is controlled

through the SPI by means of a dedicated

command set. The configured bits are used for

testing, configuration and calibration purpose.

From a pair of

∆ ∑ output signals coming from

analog section, a DSP unit computes the amount

of consummated active, reactive and apparent

energy, RMS and instantaneous values of voltage

and current. The results of computation are

available as pulse frequency and states on the

digital outputs of the device or as data bits in a

data stream, which can be read from the device

by means of SPI interface. This system bus

interface is used also during production testing of

the device and/or for temporary or permanent

programming of bits of internal OTP. In the

STPM01 an output signal with pulse frequency

proportional to energy is generated, this signal is

used in the calibration phase of the energy meter

application allowing a very easy approach. When

the device is fully configured and calibrated, a

dedicated bit of OTP block can be written

permanently in order to prevent accidental

entering into some test mode or changing any

configuration bit.

TSSOP20

www.st.com

Order code

Part number

Temperature range

Package

Packaging

STPM01FTR

-40 to 85 °C

TSSOP20 (Tape & reel)

2500 parts per reel

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