STEVAL-IPE009V1 STMicroelectronics, STEVAL-IPE009V1 Datasheet

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Single phase energy metering IC with pulsed output Features ■ Ripple free active energy pulsed output ■ Direct stepper counter drivers ■ Shunt, current transformer, Rogowsky coil sensors ■ Live and neutral monitoring (STPM13/14) ■ Easy and fast digital calibration ...

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Contents Contents 1 Schematic diagram 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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STPM11, STPM12, STPM13, STPM14 7.16 Mode signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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List of tables List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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STPM11, STPM12, STPM13, STPM14 List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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Schematic diagram 1 Schematic diagram Figure 1. Block diagram 6/46 STPM11, STPM12, STPM13, STPM14 Doc ID 13167 Rev 7 ...

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STPM11, STPM12, STPM13, STPM14 2 Pin configuration Figure 2. Pin connections (top view) Table 2. Pin description Pin n° Symbol Type 1 MON MOP SCS OUT DDD 5 V ...

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Maximum ratings 3 Maximum ratings Absolute maximum ratings (see Note:) Table 3. Symbol V DC input voltage CC I Current on any pin (sink/source) PIN Input voltage at digital pins (SCS, MOP, MON, SYN, SDATD SCLNLC, LED) V ...

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STPM11, STPM12, STPM13, STPM14 4 Electrical characteristics 25°C, 2.2 µF between between V and V CC Table 5. Electrical characteristics Symbol Parameter Energy measurement accuracy f Effective bandwidth BW Error Measurement ...

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Electrical characteristics Table 5. Electrical characteristics (continued) Symbol Parameter t OTP programming time per bit OTP Current injection latch-up I LATCH immunity Analog Inputs ( IP1 IN1 IP2 IN2 V Maximum input signal levels ...

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STPM11, STPM12, STPM13, STPM14 Table 5. Electrical characteristics (continued) Symbol Parameter Crystal oscillator (STPM12/14) I Input current on CLKIN I R External resistor P C External capacitors P f Nominal output frequency CLK RC Oscillator (STPM11/13) I Settling current CLKIN ...

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Terminology 5 Terminology 5.1 Measurement error The error associated with the energy measured by STPM1X is defined as: Percentage Error = [STPM1X (reading) - True Energy] / True Energy 5.2 ADC offset error This is the error due to the ...

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STPM11, STPM12, STPM13, STPM14 6 Typical performance characteristics Figure 3. Supply current vs. supply voltage °C A Figure 5. RC oscillator: frequency jitter vs. temperature Figure 7. Digital voltage regulator: line - load regulation Typical performance characteristics ...

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Typical performance characteristics Figure 9. Power supply AC rejection vs. V Figure 11. Error over dynamic range gain dependence Figure 13. Gain response of ΔΣ AD Converters Figure 14. Clock frequency vs. external 14/46 STPM11, STPM12, STPM13, STPM14 Figure 10. ...

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STPM11, STPM12, STPM13, STPM14 7 Theory of operation 7.1 General operation The STPM1X is able to perform active energy measurement (wide band or fundamental) in single-phase energy meter systems. Due to the proprietary energy computation algorithm, STPM1X active energy is ...

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Theory of operation The Table 8 and Table 9 Table 8. Configuration of current sensors Current channel Gain Table 9. Configuration of current sensors Primary Gain Sensor 8 16 Rogowsky Coil ...

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STPM11, STPM12, STPM13, STPM14 A ∑ Δ modulator converts the input signal into a continuous serial stream of 1s and rate determined by the sampling clock. In the STPM1X, the sampling clock is equal to f /4. ...

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Theory of operation Equation − IRMS BFR 6703 (CT/Shunt) Equation − IRMS BFR 6687 (Rogowsky) Where K is the voltage calibrator value ranging from 0.875 to 1.000. V The BFR flag is cleared ...

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STPM11, STPM12, STPM13, STPM14 Table 11. Nominal voltage values NOM For example 783kΩ and R2 = 475Ω are used as resistor divider when the line voltage is present, the positive voltage present at ...

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Theory of operation bias currents and voltages for all other analog modules and for the OTP module. The bandgap voltage temperature behavior can be changed in order to better compensate the variation of sensor sensitivity with temperature. This task is ...

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STPM11, STPM12, STPM13, STPM14 7.8 Error detection In addition to the no-load condition and the line frequency band, the integration of power can be suspended also due to detected error on the source signals. There are two kinds of error ...

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Theory of operation periods of line voltage when the current of secondary channel is used instead. Four periods before the primary to secondary switching point, a tamper detection module is activated deactivated after eight periods of line have ...

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STPM11, STPM12, STPM13, STPM14 When internal signals are not good enough to perform the computation, i.e. line period is out or range or ∑Δ signals from the analog part are stacked at high or low logic level load ...

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Theory of operation Figure 18. Different oscillator circuits (a); (b); (c) STPM12/14 with quartz 7.12 Resetting the STPM1x The STPM1x has no reset pin. The device is automatically reset by the POR circuit when the V crosses the 2.5 V ...

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STPM11, STPM12, STPM13, STPM14 Table 13. Different settings for led signal KMOT (2 Bits Due to the innovative and proprietary power calculation algorithm, the frequency signal is not affected by any ripple at twice the line ...

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Theory of operation Figure 19. Positive energy stepper driving signals Figure 20. Negative energy stepper driving signals When a no-load condition is detected MOP and MON are held low. 7.15 Configuring the STPM1x All the configuration bits that control the ...

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STPM11, STPM12, STPM13, STPM14 The very first CFG bit, called TSTD, is used to disable any change of system signals after it has been permanently set. During the configuration phase, each bit set to logic level 1 increases the supply ...

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Theory of operation Table 15. Configuration bits map (continued) Address N. of Name 6-BIT bits DEC binary 001010 10 FUND 1 001011 11 1 001100 12 LTCH 2 (1) 001101 13 001110 14 KMOT 2 (1) 001111 15 010010 18 ...

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STPM11, STPM12, STPM13, STPM14 Table 15. Configuration bits map (continued) Address N. of Name 6-BIT bits DEC binary 100000 32 100001 33 100010 34 100011 35 CHP 8 100100 36 100101 37 100110 38 (1) 100111 39 101000 40 101001 ...

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Theory of operation 7.16 Mode signals The STPM1x includes four mode signals. These signals change some of the operation of the STPM1x. The mode signals are not retained when the STPM1x supply is not available and then they are cleared ...

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STPM11, STPM12, STPM13, STPM14 The condition in which SCS, SYN-NP and SCL-NLC inputs are set to high level determines the idle state of the CFGI interface and no data transfer occurs. – SCS: in the STPM1X, the SYN-NP, SCL-NLC and ...

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Theory of operation Figure 21. Timing for writing configuration and mode bits → → data value is placed in SDA 3 t4: SDA value is stable and shifted into the ...

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STPM11, STPM12, STPM13, STPM14 Permanent writing of the CFG bits In order to make a permanent set of some CFG bits, use the following procedure: 1. collect all addresses of CFG bits to be permanently set into a list; 2. ...

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Energy calculation algorithm 8 Energy calculation algorithm Inside the STPM1x the computing section of the measured active power uses a completely new patented signal process approach. This approach allows the device to reach high performances in terms of accuracy. The ...

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STPM11, STPM12, STPM13, STPM14 In the STPM1x, after the pre-conditioning and the A/D conversion, the digital voltage signal (which is dynamically more stable with respect to the current signal) is processed by a differentiate stage which transforms: Equation 9 v(t) ...

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Energy calculation algorithm Equation 16 ⎛ ⋅ ⋅ ω cos ⎜ ⎝ 2 has been then removed from the instantaneous power. In the case of current sensors like "Rogowski coils", which provide the rate of ...

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STPM11, STPM12, STPM13, STPM14 9 STPM1x calibration Energy meters based on STPM1x devices are calibrated on the frequency of the output pulse signal. The devices are comprised of two independent meter channels for line voltage and current respectively. Each channel ...

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STPM1x calibration within Kp = Kv*Ki = (0.75*0.75)=56.25% and 100%, and Cv=Ci=128 gives a correction factor of Kp= (0.875*0.875) = 76.5625%. Each calibrator value can be changed from a binary form to a decimal correction form, using the following formula: ...

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STPM11, STPM12, STPM13, STPM14 Note: STPM13/14: each current channel must be calibrated separately. In order to do this, follow these steps: Apply the nominal test voltage to the voltage sensor, and the nominal test current to the primary current channel ...

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Schematic 10 Schematic Figure 23. Charge pump schematic 40/46 STPM11, STPM12, STPM13, STPM14 Doc ID 13167 Rev 7 ...

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STPM11, STPM12, STPM13, STPM14 Figure 24. Application schematic Doc ID 13167 Rev 7 Schematic 41/46 ...

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Package mechanical data 11 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available ...

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STPM11, STPM12, STPM13, STPM14 Dim. Min 0.05 A2 0.8 b 0.19 c 0.09 D 6.4 E 6 0° PIN 1 IDENTIFICATION 1 TSSOP20 mechanical data mm. Typ. Max. ...

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Package mechanical data Tape & reel TSSOP20 mechanical data Dim. Min 12 6.8 Bo 6.9 Ko 1.7 Po 3.9 P 11.9 44/46 mm. Typ. Max. Min. 330 13.2 0.504 0.795 2.362 22.4 ...

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STPM11, STPM12, STPM13, STPM14 12 Revision history Table 20. Document revision history Date Revision 30-Jan-2007 1 06-Feb-2007 2 20-Mar-2007 3 13-Sep-2007 4 21-Jan-2008 5 07-Apr-2009 6 16-Mar-2011 7 Initial release. The Figure 11 has been changed. General description has been ...

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