MAX31343

• Allows prototyping of high performance, polyphase energy meters
• Modular hardware design:
  • Metering & compute base board
  • Add-on board for COMMS and HMI
• The base board offers flexibility in input/output (I/O) interfacing through custom add-on boards
• Industrial connectivity: 10BASE-T1L (ADIN1110), RS-485 (ADM2587E), Ethernet (WIZ82)
• Long time data logging (SD card)
• Standalone interface (display, LEDs, buttons)
• I/O prototyping area (external control signals, GPS / GNSS)
• Publicly available software for evaluation and prototyping
• Embedded processing implementing the complete IEC 61000-4-30 class S power quality standard (using ADI proprietary ADSW-PQ-CLS library)
• Open-source GUI (Scopy – Cross-platform Qt application)
• Fully isolated design for safe operation
• Industry standard form factor compatible with DIN rail mounts

The AD-PQMON-SL provides a complete software and hardware platform for prototyping and evaluating high performance class S polyphase energy quality monitors. The design incorporates the ADE9430 high performance, polyphase energy monitoring IC that has an advanced metrology feature set (total and fundamental active power, volt amperes reactive (VAR), volt amperes (VA), watthour, VAR hour, VA hour, total and fundamental IRMS and VRMS, power factor) and the MAX32650 ultralow power ARM cortex-M4 with FPU-based microcontroller with 3 MB flash and 1 MB SRAM. The ADE9430 enables accurate energy monitoring over a wide dynamic range through its superior analog performance and digital signal processing (DSP) core. The ADE9430 simplifies the implementation and certification of energy and power quality monitoring systems by providing tight integration of acquisition and calculation engines. This solution can be used on a 3-phase system or up to three single-phase systems.

The design also features the MAX32650, which is a part of a new breed of low-power microcontrollers built to thrive in the rapidly evolving Internet of Things (IoT) named DARWIN. These MCUs are smart, with the biggest memories in their class and a massively scalable memory architecture. The MCU exposes all the necessary debug and programming features to enable a complete software development experience with the system. It is coupled with 512 Mb RAM and 64 Mb flash external memories to provide flexibility. The system's firmware is based on ADI's open-source no-OS framework and ADI proprietary ADSW-PQ-CLS library.

The solution has an on-board ADuM6424A Quad-Channel Isolator with Integrated DC-to-DC Converter. This DC-DC converter is used to supply all the components on the high voltage side. The ADUM6424A and the ADUM4152, which is a 5 kV, 7-Channel, SPIsolator™ Digital Isolator for SPI (with 1/2 Aux channel directionality), are used to isolate the connection between the ADE9430 and MAX32650.

The board can be supplied from the AC input through an isolated AC/DC converter or from the USB through the LTC3306, a 1.75 A Synchronous Step-Down Regulator. A logic based on several MAX40203, an Ultra-Tiny nanoPower, 1 A Ideal Diodes with Ultra-Low-Voltage Drop, selects based on availability the supply input with priority to the AC input.

The other 1.1 V and 1.8 V voltage rails needed by the MCU are converted from the 3.3 V input by the ADP225, a Dual, 300 mA Adjustable Output, Quick Output Discharge, Low Noise, High PSRR Voltage Regulator.

For high accuracy time keeping, the MAX31343 ±5 ppm, I2C Real-Time Clock with Integrated MEMS Oscillator is used.

The add-on board includes a standalone interface (a 64 x 4 display, 2 LEDs, and 5 buttons), an SD card for long time data logging, several industrial connectivity ports, and exposes an I/O prototyping area for I2C, SPI, GPIO, UART, 3V3, GND. The prototyping area can be also used for GPS / GNSS (e.g., Accurate Synchrophasor Measurement) or for external control signals.

For industrial connectivity, these are the following possibilities:

• T1L through the ADIN1110, an ultralow power, single port, 10BASE-T1L transceiver design for industrial Ethernet applications
• RS-485 implemented using the ADM2587E, a 2.5 kV Signal and Power Isolated, ±15 kV ESD Protected, Full/Half Duplex RS-485 Transceiver (500 kbps)
• Ethernet

APPLICATIONS

• Energy and power monitoring
• Standards compliant power quality monitoring
• Protective devices
• Smart power distribution units
• Polyphase energy meters
• Intelligent buildings

• Easy Evaluation of the MAX31343
• +1.6V to +5.5V Single-Supply Operation
• Proven PCB Layout
• Fully Assembled and Tested
• Arduino^®/Mbed^® Platform Compatible

The MAX31343 shield is a fully assembled and tested PCB to evaluate the MAX31343, low-cost, extremely accurate, real-time clock (RTC) with I²C interface and power management. The shield operates from a single supply, either from USB or external power supply, and the integrated microelectromechanical systems (MEMS) resonator enhances the long-term accuracy and eliminates the external crystal requirement in the system. This device is accessed through an I²C serial interface provided by a MAX32625 PICO board.

The MAX31343 shield provides the hardware and software user interface (GUI) necessary to evaluate the MAX31343. The shield includes a MAX31343EKA+T. It connects to the PC through a MAX32625 PICO board and a micro-USB cable.

Applications

• Action Cameras
• Communications
• Handheld Instrumentation
• Industrial
• Power Meters
• Wearables

• Metrology subsystem plus selected other features of a level 2, 7kW to 22kW electric vehicle supply equipment (EVSE)
• Full-featured board for ADE9112, ADE9113, and ADE9178
• Rated up to three phase, 240V RMS line to neutral voltage
• Rated up to 32A current measurement with on-board shunts
• Supports up to 22kW combined power transfer to load
• Features MAX32672 low power, secure microcontroller
• Supports LCD display for energy and state updates
• Supports MODBUS™ protocol over RS-485 communication interface
• Supports Protobuf™ messages to communicate with EVerest open source software (OSS)
• IEC61851-compatible state machine implementation

The AD-ACEVSE22KWZ-KIT is a reference design for the metrology subsystem plus selected other features of a level 2, 7 kW to 22 kW AC electric vehicle supply equipment (EVSE). It includes the ADE9113 isolated Σ-Δ analog-to-digital converter (ADC) coupled with the ADE9178 metrology DSP to accurately measure energy delivered to an electric vehicle (EV). It includes the MAX32672 ultralow- power ARM^® Cortex^®-M4 processor, a cost-effective, highly integrated, and highly reliable 32-bit microcontroller to accumulate energy measurements and securely send it to a host for display. A charge control state machine is run on the microcontroller to transition through different charge states when a charging plug is inserted into an electric vehicle. The kit includes a flexible printed circuit (FPC) connector and LCD to read the energy measurements and state transitions during a charging cycle. The power input/output, control pilot (CP), and proximity pilot (PP) signals are exposed on connectors at the edge of the board. The energy delivered to the EV is measured as a voltage drop across shunts and a resistor ladder network, which makes it easy to set up the boards in the field.