Poly-phase chipset for energy measurement STMicroelectronics Innovative modular approach for high-performance/accuracy electricity metering systems STMicroelectronics’ poly-phase chipset represents the first modular solution for metering systems. It supports 1-, 2- or 3-phase wye and delta services, from 2 to 4 wires. It provides ripple-free cumulative active (wideband and fundamental) and reactive energy calculation, frequency, RMS and instantaneous voltage and current values for each phase, and cumulative values. STPMC1 QQ QQ QQ QQ QQ Computes active and reactive wideband and fundamental harmonic energies Exclusive ripple-free energy calculation algorithm 112 configuration and calibration bits Neutral current, temperature and magnetic field monitoring SPI interface STPMS2 QQ QQ QQ Two 2nd order SD modulators Max error on active energy 0.1% over 1:2500 dynamic range Standards supported: EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22, IEC 62053-23, ANSI C12.1-2001, ANSI C12.10-1997, ANSI C12.20-2002 Key benefits The high-speed pulsed output energy enables a fast digital calibration in only one load point. QQ Wide sensor support, SPI interface, tamper proofing by neutral current, temperature and magnetic field monitoring make this the ideal solution for multi-purpose high-performance metering systems. QQ QQ QQ Fast digital calibration Higher accuracy Flexible approach Allows the use of multiple shunts Targeted applications QQ Power metering www.st.com/metering STPMC1 STPMS2 VDD VCC Linear Vregs VOTP POR VBG Band gap 112 OTP configurators BIAS Clock generator XTAL1 XTAL2 CLK DAx DAN 0 1 0 1 DAx-C xDSP DAx-V 2nd order ∑Δ modulator VIP VIN Stepper driver MOP MON Energy to frequency converters LED DAN-C CIP CIN LNA 2x, 8x VCC LDR VSS Digital front end 2nd order ∑Δ modulator Bias ref. VDDA VDDac VDDav DAT DATN MS3 MS2 MS1 MSO CLK VBG VSSA DAN-V NDSP SPI interface VSS DAH ENH SCL SCS SYN SDA tsso20 qfn16 (4x4) Product description The STPMC1 works as an energy calculator. It is an ASSP designed for effective energy measurement in power line systems. Used in combination with one or more STPMS2 ICs, it implements all the functions needed in a 1-, 2- or 3-phase energy meter. The STPMS2, also called smart-sensor, is a dual SD modulator with embedded PGA. This chipset approach allows you to position the A/D conversion (STPMS2) very close to the current transducers, so minimizing noise capture from the analog tracks. Once converted, the SD streaming of voltage and current are multiplexed and transferred through a single-wire data line to a dedicated DSP inside the STPMC1. The STPMC1 can manage from 2 to 9 streams coming from the STPMS2 (from 1 to 5 devices) serving 3 voltage channels and 4 current channels plus 2 optional streams for multiple purposes. Product table Part number STPM01 STPM10 STPM11 STPM12 STPM13 STPM14 STPMC1 STPMS2 Meter type Measurement parameters Marketing status Single phase Watt, VAR, VA, Irms, Vrms, V, I Single phase Watt, VAR, VA, Irms, Vrms, V, I Single phase Watt Single phase Watt Single phase Watt Single phase Watt Poly phase Watt, VAR, Irms, Vrms, V, I Poly phase N/A Active Active Active Active Active Active Active Active Supply voltage (Vcc) (V) 3.165 to 5.5 3.165 to 5.5 3.165 to 5.5 3.165 to 5.5 3.165 to 5.5 3.165 to 5.5 3.165 to 5.5 3.165 to 5.5 Operating temperature (°C) -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 Analog channels (V + I) 1+2 1+2 1+1 1+1 1+2 1+2 N/A 1+1 Quartz/RC/ Order of SD Package external modulator oscillator TSSOP20 Q/RC/E 1st TSSOP20 Q/RC/E 1st TSSOP20 RC 1st TSSOP20 Q/E 1st TSSOP20 RC 1st TSSOP20 Q/E 1st Q/E N/A TSSOP20 QFN16 (4x4) N/A 2st © STMicroelectronics - October 2011 - Printed in United Kingdom - All rights reserved The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies All other names are the property of their respective owners Order code: FLSTPMC1X1011 For more information on ST products and solutions, visit www.st.com