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Order code: FLSTPM3X0514

HIGHLY INTEGRATED METERING ICS

Enable confident and consistent measuring in the low-energy age

Astoday’shomeelectronicsandappliancesofferever-lowerstandbypower,ST’sSTPM32,STPM33,STPM34willhelpenergyutilitiesto

minimizerevenuelossesandensureconsistenthighaccuracybillingwhilemeasuringeventheharmoniccontentuptoa4kHzbandwidth.

Moreoverpower-qualityassessmentisachievedthankstoadditionalfeatureslikevoltagelinefrequencycalculation,SAG,SWELL,negative

powerindicationandzerocrossingdetection.

Byperformingpower-qualitycalculationson-chip,includingRMSvoltageandcurrentmeasurement,apparent-energycomputationandunder-

voltage/over-voltagedetection,theICcanoffloadthemeter’shostprocessorthussimplifyingcomputationalsoftwareandreducingtheflash

memorysizeoccupationinthehostcontroller.

TheSTPM32,STPM33andSTPM34providetwo,threeorfourindependentchannelsrespectively,forsingle,splitandpoly-phaseAC

applications.TheyarefullycompliantwithapplicableInternationalElectrotechnicalCommission(IEC),AmericanNationalStandardsInstitute

(ANSI)standardsasadoptedbyregulatoryauthoritiesworldwide,andexceedStatePowerGridCorporationofChina(SGCC)requirements.

Order codes

Package

Packing

# channels

Evaluation Boards

STPM32TR

QFN24 4x4 0.5p

Tape & Reel

2

EVALSTPM32

STPM33TR

QFN32 5x5 0.5p

Tape & Reel

3

EVALSTPM33

STPM34TR

QFN32 5x5 0.5p

Tape & Reel

4

EVALSTPM34

PRODUCT TABLE

STPM34: 4 INDEPENDENT CHANNELS BLOCK DIAGRAM

Voltage sensor 1

24-bit

∑∆

ADC

Current sensor 1

Filters

SPI/UART

Digital

signal

processing

24-bit

∑∆

ADC

Voltage sensor 2

24-bit

∑∆

ADC

Current sensor 2

MCU

Twin voltage references

24-bit

∑∆

ADC