Download Databrief

EVALSTPM33
Single-phase energy metering evaluation board with tamper
monitoring, CT and shunt current sensor based on the STPM33
Data brief
Description
The STPM33 energy metering evaluation board is
a class 0.2, single-phase meter which includes
tamper monitoring, CT and shunt current sensors
for power line systems with Vnom = 140 to
300 V(RMS), Inom / Imax = 5/100 A(RMS), flin = 50/60
Hz ± 10% and Tamb = -40 to +85 °C.
Measured active/reactive power can be output
from two programmable LEDs on the board.
The board can be interfaced with a PC running
evaluation software through an isolated RS232
port, or through the STEVAL-IPE023V1 USB
isolated interface tool for configuration and data
reading.
Features
• 0.2% accuracy single-phase meter with tamper
monitoring
• Vnom(RMS) = 140 to 300 V, Inom/Imax(RMS) =
5/100 A, flin = 50/60 Hz ± 10%
The board also has SPI/UART pins available to
interface a microcontroller for application
development.
• Tamper detection though neutral current
monitoring
• Connector for USB isolated hardware
programmer tool STEVAL-IPE023V1 and PC
GUI
• RS232 and UART isolated connectors to PC
GUI
• SPI/UART switch for device peripheral
selection
• 2 programmable LEDs on board
• Digital expansion to external system-on-chip or
MCU
• 3.3 V power supply: external or through
STEVAL-IPE023V1 isolated USB board
• IEC61000 standard compliant
• RoHS compliant
March 2014
DocID026139 Rev 1
For further information contact your local STMicroelectronics sales office.
1/5
www.st.com
Schematic diagrams
1
EVALSTPM33
Schematic diagrams
Figure 1. RS232/UART circuit schematic
5
4
3
2
1
1 RXD
2 TXD
3 +3.3VDC
4 GND
NOTE: always provide supply
for both RS232 and UART
J2
J1
RS-232 DB9
Vcc
4
3
2
1
9
8
7
6
UART I/O
C6
C7
100n
100n
10
11
1
3
4
5
2
6
16
U1
T2IN
T1IN
R1OUT
R2OUT
T1OUT
T2OUT
12
9
14
7
SW1
RXD
TXD
SCS
Si8621
SW DIP-3
Vcc
C1+
C1C2+
C2V+
VVCC
8
7
6
5
R1
10K
GND
J3
RS-232 enable
15
1
C1
100n
C2
100n
C3
100n
C4
100n
R1IN
R2IN
VDD1
VDD2
A1-in
B1-out
A2-out B2-in
GND1
GND2
2
13
8
1
2
3
4
ALL SWs OFF SELECT SPI AT POWER UP
ALL SWs ON SELECT UART AT POWER UP
U2
MAX3232/SO
C5
100n
GALVANIC ISOLATION
GIPG25032014DI1530
2/5
DocID026139 Rev 1
EVALSTPM33
Schematic diagrams
Figure 2. Metrology circuit schematic
1
R2
2
22K
C8
C9
100n
150p
Vp1
R14
270K
R13
C24
24
23
22
21
20
19
18
17
270K
22n
Vp2
R15
470R
Enable/RST
C23
J9
Vcc
100u 10V
J11
Vref 1-2
Vref1
C34
470R
22n
R24
270K
Do not assemble in case STPM33
R23
270K
J10
line2
L1
1500ohm
L1
VAC 4626-X002
J8
L2
1500ohm
L7
1500ohm
L3
Ip1
R17
1K
1500ohm
RS1
R16
BKW-M-R0003-5.0
6R
C25
R18
In1
0R
L4
R20
1K
L5
1
L2
T2
1500ohm
C33
10n
T1
R19
Ip2
C30
R25
270K
R26
270K
1
1u
Vref2
C29
Vref2
R12
N
100n
100n
MISO
MOSI
SCL
SCS
SYN
VDDD
GNDD
GNDD-NC
NC
VCC
GNDreg
VDDA
GNDA
VREF2
GNDref
VREF1
1
1
C22
9
10
11
12
13
14
15
16
R3
Vcc
Vn2
2
CKout/ZCR
XTAL2
CKin/XTAL1
U3
LED1
STPM33/34
LED2
INT1
INT2
EN
Vn1
J4
3
1
2
3
4
5
6
7
8
16MHz
VP1
VN1
IP1
IN1
IN2
IP2
VN2/NC
VP2/NC
1M
C17
15p
Vref1
Ex
Y1
R4
100R
3
Ex
C16
15p
1 Int1
2 Int2
3 Led2
4 En/Rst
5 Led1
6 Gnd
7 Ckin
8 Ckout/ZCR
DC Supply
32
31
30
29
28
27
26
25
DIGITAL I/O
4.7u
2
TXD
100n
1
150p
C20
C32
C15
J7
C19
C28
RXD
1
3
5
7
100R
2
4
6
8
Vcc
C31
150p
J6
100n
J5
SPI
R11
R5
4.7K
150p
150p
C14
10K
1
2
C13
10K
C27
150p
10K
C26
C12
10K
100n
150p
2
4
6
8
10
R6
4.7K
150p
10n
C11
1 NC
2 MOSI
3 Gnd
4 MISO
5 SCS
6 SCL
7 NC
8 SYN
9 NC
10 Vcc
C21
C10
R10
150p
LED2
R9
C18
DL2
R8
150p
LED1
R7
1
3
5
7
9
DL1
SCS
150p
Vcc
1K
R21
6R
10n
In2
VAC 4626-X002
R22
1K
1500ohm
L6
1500ohm
To assemble in case current sensor is Shunt
To assemble in case current sensor is Current Transformer
GIPG25032014DI1535
DocID026139 Rev 1
3/5
5
Revision history
2
EVALSTPM33
Revision history
Table 1. Document revision history
4/5
Date
Revision
31-Mar-2014
1
Changes
Initial release.
DocID026139 Rev 1
EVALSTPM33
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
ST PRODUCTS ARE NOT DESIGNED OR AUTHORIZED FOR USE IN: (A) SAFETY CRITICAL APPLICATIONS SUCH AS LIFE
SUPPORTING, ACTIVE IMPLANTED DEVICES OR SYSTEMS WITH PRODUCT FUNCTIONAL SAFETY REQUIREMENTS; (B)
AERONAUTIC APPLICATIONS; (C) AUTOMOTIVE APPLICATIONS OR ENVIRONMENTS, AND/OR (D) AEROSPACE APPLICATIONS
OR ENVIRONMENTS. WHERE ST PRODUCTS ARE NOT DESIGNED FOR SUCH USE, THE PURCHASER SHALL USE PRODUCTS AT
PURCHASER’S SOLE RISK, EVEN IF ST HAS BEEN INFORMED IN WRITING OF SUCH USAGE, UNLESS A PRODUCT IS
EXPRESSLY DESIGNATED BY ST AS BEING INTENDED FOR “AUTOMOTIVE, AUTOMOTIVE SAFETY OR MEDICAL” INDUSTRY
DOMAINS ACCORDING TO ST PRODUCT DESIGN SPECIFICATIONS. PRODUCTS FORMALLY ESCC, QML OR JAN QUALIFIED ARE
DEEMED SUITABLE FOR USE IN AEROSPACE BY THE CORRESPONDING GOVERNMENTAL AGENCY.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2014 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
DocID026139 Rev 1
5/5
5
Similar pages