STPM01

NRND
Design Win

PROGRAMMABLE SINGLE PHASE ENERGY METERING IC WITH TAMPER DETECTION

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Product overview

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 1storder 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.

  • All 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

Circuit Diagram

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STMicroelectronics - STPM01

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STPM01FTR
NRND
TSSOP-20 Industrial Ecopack2

STPM01FTR

Package:

TSSOP-20

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

TSSOP-20

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

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min
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STPM01FTR Available at distributors

Distributor availability of STPM01FTR

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Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
NRND
EAR99 NEC Tape and Reel TSSOP-20 -40 85 -

1.5306

PHILIPPINES

STPM01FTR NRND

Package:
TSSOP-20
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

STPM01FTR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Autoshutdown:

-

Country of Origin:

PHILIPPINES

Distributor Name

Distributor reported inventory date:

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors