STPM01 datasheet(1/60 Pages) STMICROELECTRONICS

部件名	STPM01

功能描述	Programmable single phase energy metering IC with tamper detection

PDF	60 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 60 page

June 2011

Doc ID 10853 Rev 8

1/60

60

STPM01

Programmable single phase energy metering IC

with tamper detection

Features

■ 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: 1.23 V 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

monophase energy meter or as a peripheral

measurement in a microcontroller based

monophase 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

Δ ∑ 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

Δ ∑ 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

Table 1.

Device summary

Order code

Temperature range

Package

Packaging

STPM01FTR

- 40 to 85 °C

TSSOP20 (tape and reel)

2500 parts per reel

www.st.com

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