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PDF STPM10 Data sheet ( Hoja de datos )
| Número de pieza | STPM10 | |
| Descripción | Programmable single-phase energy metering IC | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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STPM10
Programmable single-phase energy metering IC
with tamper detection
Features
■ Measures active, reactive, and apparent
energies
■ Current, voltage RMS and instantaneous
measurement
■ Frequency measurement
■ Ripple-free active energy pulsed output
■ Live and neutral monitoring for tamper
detection
■ Fast and simple one-point digital calibration
over the whole current range
■ Integrated linear voltage regulators for digital
and analog supply
■ Selectable RC or crystal oscillator
■ Supports 50 - 60 Hz - IEC62052-11, IEC62053-
2x specifications
■ Less than 0.1% error in the 1000:1 range
■ Precision voltage reference: 1.23 V with 30
ppm/°C max
Description
The STPM10 is designed for effective
measurement of active, reactive and apparent
energy in a power line system using current
transformer and shunt sensors. The device can
be implemented for peripheral measurement in a
microcontroller-based single-phase or poly-phase
energy meter. The STPM10 consists of two main
sections: analog and digital. The analog part is
composed of preamplifier and first-order sigma-
delta A/D converter blocks, a band-gap voltage
reference and low-drop voltage regulator. The
digital part is composed of system control,
oscillator, hard-wired DSP and SPI interface.
There is also an internal volatile memory, which is
Table 1. Device summary
Order code
Temperature range
STPM10BTR
- 40 to 85 °C
TSSOP20
controlled through the SPI by means of a
dedicated command set. The configured bits are
used for configuration and calibration purposes.
From a pair of sigma-delta output signals
produced by the analog section, the DSP unit
computes the amount of active, reactive and
apparentwww.DataSheet.net/ energy consumed, as well as the RMS
and instantaneous voltage and current values.
The results of the computation are available as
pulse frequencies 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 the SPI interface. The system bus
interface is also used for temporary programming
of bits of internal volatile memory. The STPM10
generates an output signal with a pulse frequency
proportional to the energy, and this signal is used
in the calibration phase of the energy metering
application.
Package
TSSOP20 (tape and reel)
Packaging
2500 parts per reel
June 2011
Doc ID 17728 Rev 3
1/51
www.st.com
51
Datasheet pdf - http://www.DataSheet4U.co.kr/
1 page  
STPM10
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
Figure 24.
Figure 25.
Figure 26.
Figure 27.
Figure 28.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Supply current vs. supply voltage, TA = 25 °C (f = 4.194 MHz, 8.192 MHz). . . . . . . . . . . . 13
RC oscillator frequency vs. VCC, R = 12 kΩ, TA = 25 °C . . . . . . . . . . . . . . . . . . . . . . . . . . 13
RC oscillator: frequency jitter vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Analog voltage regulator: line - load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Digital voltage regulator: line - load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Voltage channel linearity at different VCC voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power supply AC rejection vs. VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power supply DC rejection vs. VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Error over dynamic range gain dependence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Primary current channel linearity at different VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Gain response of ΔΣ A/D converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
First-order ΣΔ A/D converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
ZCR signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
LIN and BFR signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Band-gap temperature variation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Timings of tamper module - Primary channel selected. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Timings of tamper module - Secondary channel selected . . . . . . . . . . . . . . . . . . . . . . . . . 22
Different oscillator circuits with (a) quartz, (b) internal oscillator, (c) external source . . . . . 23
STPM10 data records map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Timing for providing remote reset request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Data record reconstruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Timing for data record reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Timing for writing configuration and mode bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
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Active energy computation diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
STPM10 reference schematic with one current transformer and one shunt. . . . . . . . . . . . 45
TSSOP20 footprint recommended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Doc ID 17728 Rev 3
5/51
Datasheet pdf - http://www.DataSheet4U.co.kr/
5 Page 
STPM10
Table 5. Electrical characteristics (continued)
Symbol
Parameter
Test conditions
FSCLKw Data write speed
tDS Data setup time
tDH Data hold time
tON Data driver on time
tOFF Data driver off time
tSYN SYN active width
Electrical characteristics
Min.
20
0
2/fCLK
Typ.
Max.
100
20
20
Unit
kHz
ns
ns
ns
ns
s
www.DataSheet.net/
Doc ID 17728 Rev 3
11/51
Datasheet pdf - http://www.DataSheet4U.co.kr/
11 Page | ||
| Páginas | Total 51 Páginas | |
| PDF Descargar | [ Datasheet STPM10.PDF ] | |
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