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  • The STPMC1 device functions as an energy calculator and is an ASSP designed for effective energy measurement in power line systems utilizing Rogowski, current transformer, Shunt or Hall current sensors. Used in combination with one or more STPMSx ICs, it implements all the functions needed in a 1-, 2- or 3-phase energy meter. It can be coupled with a microprocessor for multi-function energy meters, or it can directly drive a stepper motor for a simple active energy meter. The calculator has five input data pins. The first three receive the voltage and current information of the phases. In fact, each data input processes two ΔΣ signals, multiplexed in time and generated by the STPMSx device. The fourth input receives multiplexed ΔΣ signals also, and can be used to sense the neutral current or another signal - temperature, for example. The fifth input data pin accepts non-multiplexed ΔΣ signals and it can be used for sensing the magnetic field information from a Hall sensor. Four internal hard-wired DSP (digital signal processing) units perform all the computations on the ΔΣ streams in real time by means of ΔΣ arithmetic blocks. This allows the achievement of very high computation precision with fast and efficient digital architecture. All the data recorded by the STPMC1 are accessible through an SPI port, which is also used to configure and calibrate the device. The configuration and calibration data can be saved in a 112-bit OTP block, or dynamically set in microprocessor-based meters.

    Key Features

    • Supports 1-, 2- or 3-phase WYE and Delta services, from 2 to 4 wires
    • Computes cumulative active and reactive wide-band and fundamental harmonic energies
    • Computes active and reactive energies, RMS and momentary voltage and current values for each phase
    • Supports Rogowski coil, current transformer, Shunt or Hall current sensors
    • Exclusive ripple-free energy calculation algorithm
    • Programmable pulsed output
    • Stepper motor outputs
    • Neutral current, temperature, and magnetic field monitoring
    • OTP memory for configuration and calibration
    • SPI interface
    • Supports IEC 62052-11 / 62053-21 / 62053-23 standards
    • Less than 0.1 % error over 1:1000 dynamic range

Circuit Diagram

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STPMC1BTR
Active
TSSOP 20 Industrial Ecopack2

STPMC1BTR

Package:

TSSOP 20

Material Declaration**:

Marketing Status

Active

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

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Autoshutdown
Budgetary Price (US$)*/Qty
More info
min
max
STPMC1BTR Available at 3 distributors

Distributor availability ofSTPMC1BTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1284 1 Order Now
AVNET AMERICA 50000 0 Order Now
MOUSER WORLDWIDE 2458 1 Order Now

Distributor reported inventory date: 2020-12-01

Distributor Name

DIGIKEY

Stock

1284

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

50000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2458

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-12-01

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel TSSOP 20 -40 85 - 1.5 / 1k
MORE INFO

Unit Price (US$):

1.5

Country of Origin:

CHINA

STPMC1BTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.5 / 1k

Distributor availability ofSTPMC1BTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1284 1 Order Now
AVNET AMERICA 50000 0 Order Now
MOUSER WORLDWIDE 2458 1 Order Now

Distributor reported inventory date: 2020-12-01

Distributor Name

DIGIKEY

Stock

1284

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

50000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2458

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-12-01

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

TSSOP 20

Operating Temperature (°C)

(min)

-40

(max)

85

Autoshutdown

-

Budgetary Price (US$)* / Qty

1.5 / 1k

Country of Origin

CHINA

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