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Rev.1.0, February 2015 Maxim Integrated | Confidential Page 4
Page 5
MAX78615+PPM Evaluation Kit User Manual
1 Introduction
The MAX78615+PPM evaluation kit demonstrates the capability of the MAX78615+PPM. The MAX78615+PPM chipset
monitors up to three voltages and three current through up to three galvanically isolated ADCs. The typical application is
source/load monitoring in single and poly-phase systems. The kit connects to a PC through a USB cable that provides
both power and data communication to the board. A Windows®-based graphical user interface (GUI) communicates with
the device over a virtual COM port for simplified access to measurement data and controls.
The MAX78615+PPM data sheet provides all the details on signal processing, operations and settings. It also includes the
registers map with description. The data sheet should be used along with this manual during the setup and evaluation
phase of the MAX7815+PPM.
1.1 Ordering Part Number
MAX78615PPM70EVK1#
1.2 Package Contents
The MAX78615+PPM evaluation board demo kit includes:
• MAX78615+PPM evaluation board
• USB cable assembly USB A-B 28/24 1.8M (Tyco/Amp 1487588-3)
• CD with documentation, GUI application, and USB drivers
EXERCISE CAUTION WHEN LIVE AC VOLTAGES ARE PRESENT!
Standard ESD precautions must be taken when handling electronic equipment.
Exercise extreme caution handling the hardware and connecting test equipment to
the nonisolated portion of the MAX78615+PPM modem board (highlighted in red
below). Ignoring the safety requirements can lead to shock, injury, and damage of
the hardware.
The board components and firmware settings are designed to operate with the following nominal AC electrical ranges:
Voltage Current Line Frequency
10VAC–400VAC 10mA–15A 46Hz–64Hz
Figure 2. MAX78615+PPM Nonisolated (Shock Hazard) Area in Red
1.5 Testing the MAX78615+PPM Evaluation Board Prior to Shipping
Before every kit is shipped, the board (and sensors) undergoes a single-load point calibration using precise energy
source equipment. The device temperature is also calibrated at the same time. Results printed out on paper and
included with the evaluation kit.
Rev. 1.0 7
Page 8
MAX78615+PPM Evaluation Kit User Manual
MAX
78700
MAX78700
MAX78700
MAX78615
+PPM
J
21
USB
J
1
J16
SW
1
J14
J22
SHUNT
SHUNT
SHUNT
J44
J40
J41
J
42
J43
J24
J25
J
26
J
27
J45
J
47
J
48
J
38
J39
J2
J46
1
1
1
1
1
1
1
1
1
1
1
1
ISOLATION
ISOLATION
ISOLATION
PT
PT
PT
2Installation and Setup
The MAX78615+PPM evaluation kit connects to a PC through a USB cable that provides both power and data
communication to the board. A Windows®-based graphical user interface (GUI) communicates with the device
over a USB/SPI virtual COM port. The GUI provides a simple access to measurement data and controls.
2.1 System Description
The MAX78165+PPM is an energy measurement device (host processor) that interfaces to up to three
MAX78700 (AFE+ADC). The MAX78615+PPM utilized a pulse transformer for each MAX78700 to establish both
bidirectional communications and to power the MAX78700. The pulse transformer also ensures the galvanic
isolation between each MAX78700 and the system.
The evaluation kit includes a set of jumpers and connectors to allow different configurations.
Rev. 1.0 8
Figure 3. MAX78615+PPM Evaluation Kit
Page 9
MAX78615+PPM Evaluation Kit User Manual
J44
POSITION
1-2
External 5VDC supply (J14)
Installed
2-3
2-3
USB 5VDC Supply (J21)
PIN
DESCRIPTION
1
5VDC input
2
GND
INTERFACE MODE
J24 (IFC0)
J25 (IFC1)
SPI
2-3
X (don’t care)
UART
1-2
2-3
I2C
1-2
1-2
2.2 Powering the Evaluation Kit Board
The MAX78615+PPM evaluation board is normally powered through the USB port (J21). In case the power
needs to be supplied from a different source, a 5VDC supply can be connected to the terminal block J14. Jumper
J44 selects the power source as in Ta b le 1.
When the MAX78615+PPM evaluation board is powered through USB, the same cable also provides the
communications link between the host PC and the MAX78615+PPM evaluation board.
Tab le 1. J44 Jumper Description
Table 2. J14 Terminal Block Description
DESCRIPTION DEFAULT
The evaluation kit has an on-board voltage LDO regulator (VR1) that provides the 3.3VDC supply (V3P3) to the
MAX78615. The 3.3VDC supply (V3P3) is also available on the connectors J16, J1, CH1, CH2, and CH3.
The voltage range on J14 is +4.5VDC (minimum) to 12VDC (maximum).
2.3 Serial Interfaces Selection and Configuration
The MAX78615+PPM has integrated UART, SPI (slave), and I2C (slave) interfaces. Since the serial interfaces share
the same digital I/O pins, only one interface can be active at a time. The serial interface signals can be
connected to the USB interface device (FTDI chip) or to PMOD connector. The SPI is selected as default interface
and the GUI utilizes it for the communication (USB/SPI).
The FTDI chip also supports the UART mode. In order to operate the FTDI chip in UART mode, see section 2.3.3.
2.3.1 Serial Interface Selection
The interface selection is done at reset/power-on by sampling the IFC0/IFC1 interface selection pins.
Table 3 shows the settings of J24 and J25 for the serial interface selection.
Table 3. Serial Interface Selection
Rev. 1.0 9
Page 10
MAX78615+PPM Evaluation Kit User Manual
J40
(SDI)
J41
(SSB)
J42
(SCK)
J43
(SDO)
PMOD (J16)
1-2
1-2
1-2
1-2
USB Interface
2-3
2-3
2-3
2-3
PIN
NAME
DESCRIPTION
1
SSB_PMOD
SPI Mode: Slave Select
2
MOSI_PMOD
SPI Mode: Master Output Slave Input
3
MISO_PMOD
SPI Mode: Master Input Slave Output
4
SCK_PMOD
SPI Mode: Serial Clock
5
GND
Ground
6
V3P3
3.3VDC Supply (V3P3)
PIN
NAME
DESCRIPTION
1
CTS
Not Used
2
RXD
UART Mode: Data Rx
3
TXD
UART Mode: Data Tx
4
RTS
Not Used
5
GND
Ground
6
V3P3
3.3VDC Supply (V3P3)
The pins IFC0 and IFC1 are sampled at power-on and set as general purpose digital I/O (MP/multipurpose) after
the initialization phase.
2.3.2 Serial Interface Signals Connection (All Interfaces)
The serial interface signals can be connected to the USB interface (default configuration) or to the PMOD
connector (J16). See Table 4 for the connection of the serial interface signals.
Table 4. Serial Interface Selection
The PMOD connector is compatible with the PMOD Type 2 (SPI) or Type 4 respectively. Table 5 and Tabl e 6 show
the pin assignment.
The MAX78M6615+PPM implements a UART serial communication protocol (SSI) that supports multipoint
communication. The device address (lower bits) is selected through the pin MP0/AD0 and SPCK/AD1 as shown
in Table 4. The upper bits of the address are set through the register DEVADDR as described in the data sheet.
Refer to the MAX78615+PPM data sheet for the device interfaces operations.
A device address of FF is not supported. DEVADDR [23:6] bit are not used and must be set to 1.
Figure 4. UART Mode Address Selection
Table 7. UART Address Selection
The evaluation board includes a RS-485/422 transceiver. The MAX78615+PPM serial UART can be connected to
the RS-485/422 transceiver when a multi-drop RS-485/422 bus is available.
UART/USB Interface and UART/RS-485/422 Interface Configuration
In order to operate the UART through the USB/FTDI device or RS-485/422, the jumper must be set according to
Tab l e 8.
Table 8. Jumper Setting for UART/USB Interface
Rev. 1.0 11
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MAX78615+PPM Evaluation Kit User Manual
JUMPER
POSITION
J47
Closed (1-2)
J46
Closed (1-2)
J45
Closed (1-2)
J22 PIN
NAME
DESCRIPTION
1
+5VDC
+5VDC Supply
2
RS485A
Non-inverting Receiver Input
3
RS485B
Inverting Receiver Input
4
RS485Z
Inverting Transmitter Output
5
RS485Y
Non-inverting Transmitter Output
6
GND
GND
UART/RS-485/422 Interface Configuration
In order to operate the UART through the RS-485/422 transceiver, the jumpers must be set accordingly to Table
9. Tab l e 10 contains the pin assignment of connector J22.
Table 9. Jumpers Settings for UART/RS-485/422
Jumpers J38 and J39 are used to insert a 120Ω termination on the RS-485/RS422 bus. The termination should be
inserted or removed according to the board location on the RS-485/422 bus.
Table 10. J22 RS-485/422 Connector Pin Assignment
Configuring USB/UART operations
The FTDI chip supports USB/UART operations. In order to enable it, a simple modification is necessary on the
evaluation kit host board. R45 (0Ω resistor) needs to be removed. R49 needs to be populated with a 0Ω resistor.
2.3.4 SPI Interface Settings
Address Selection
In SPI mode, device address in not relevant. In this case, the jumpers J26 and J27 should be removed.
The SPI interface needs to be selected according to Section 2.3.1. The SPI signals should then be connected to
either the USB interface chip or the PMOD connector according to section 2.3.2.
2.3.5 I
2
C Interface Settings
Address Selection
2
The I
C device address (lower bits) is selected through the pin MP0/AD0 and SPCK/AD1 as shown in Table 11.
The upper bits of the address are set through the register DEVADDR as described in the data sheet. Refer to the
data sheet for the device interfaces operations.
Rev. 1.0 12
Page 13
MAX78615+PPM Evaluation Kit User Manual
6
5
4
3
2
1
0
DEVADDR Register bit 4:0
SPCK/AD0 Pin
MP6/AD1 Pin
Device Address
DEVICE ADDRESS
BIT 1 (AD1)
BIT 0 (AD0)
J26
J27 0 0
2-3
2-3 0 1
2-3
1-2 1 0
1-2
2-3 1 1
1-2
1-2
Table 11. I
2
C Address Selection
2
I
C Signals Interface
Note that the USB FTDI interface chip does not support I
available on the connector J1 and/or J16 (PMOD).
2
C/USB interface. Therefore, the I2C interface is only
Rev. 1.0 13
Page 14
MAX78615+PPM Evaluation Kit User Manual
PIN
NAME
DESCRIPTION
1
+3.3V
+3.3VDC (V3P3) supply
2
+3.3V
+3.3VDC (V3P3) supply
3
N/C
Not Connected
4
N/C
Not Connected
5
GND
Ground 6 GND
Ground 7 RESETB
Reset (Active Low)
8
IFC0
Interface Selection (Bit0)
9
IFC1
Interface Selection (Bit1)
10
MP6
Multipurpose Digital I/O
11
SSB
SPI Mode: Slave Select
I2C Mode: Serial Clock
12
MP4
Multipurpose Digital I/O
13
SDO
SPI Mode: MISO
I2C Mode: Serial Data (output)
14
SDI
SPI Mode: MOSI
I2C Mode: Serial Data (input)
15
SPCK
SPI Mode: SCK (serial data clock)
I2C Mode: Address Selection 0
16
MP0
(1)
SPI Mode: Not Utilized
I2C Mode: Address Selection 1
17
VCOMP1
Voltage Comparator 1 Input
18
VCOMP2
Voltage Comparator 2 Input
2.4 Connector J1
Connector J1 allows probing and connection to most of the digital and analog pins of the MAX78615 device.
Tab l e 12 includes J1 connector pin assignment.
Table 12: J1 Connector Pin Assignment
UART Mode: RS485 Direction
UART Mode: Data Tx
UART Mode: Data Rx
UART Mode: Address Selection 0
UART Mode: Address Selection 1
Notes:
1) The input MPO is sampled at power-on/reset and utilized for the selection of the address 0, after the
initialization, this pin is utilized/assigned as a digital I/O pin (MP0).
Rev. 1.0 14
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MAX78615+PPM Evaluation Kit User Manual
2.5 USB Driver Installation
This evaluation kit includes an isolated USB interface for serial communications with a PC. The FTDI USB
controller IC FT2232 performs the USB functions. The FTDI Windows driver presents a virtual COM port for
enabling serial communications. The FTDI Windows driver is a certified driver for Windows XP and Windows 7.
Upon attaching the MAX78615+PPM evaluation board to the PC, the Found New Hardware Wizard
automatically launches and installs the appropriate driver files. If your PC does not find the FTDI driver files on
its local hard disk drive, locate and reference the FTDI USB driver and utilities subdirectory on the CD. The
FT2232 controller is powered from the USB cable and is active even when no AC power is applied to the
MAX78615+PPM evaluation kit.
Notes: If an older FTDI driver has been previously installed, it is recommended to remove the older version before
installing this newer FTDI driver. Execute the ftdiClean.exe utility from the FTDI USB driver and utilities
subdirectory.
For FTDI driver support on other operating systems, check the FTDI website at
http://www.ftdichip.com/FTDrivers.htm
2.5.1 Confirm COM Port Mapping
• Launch the Control Panel and click on the System icon.
• The System Properties screen appears. Click on the Hardware tab. Click on Device Manager. Under Ports (COM &
LPT), look for the USB Serial Port assignment.
•Take note of the COM port assignment for the USB serial port.
.
Two sequential
COM ports are
associated with
the kit. Use the
nd
COM port.
2
Port numbers
can differ on
each PC.
Rev. 1.0 15
Page 16
MAX78615+PPM Evaluation Kit User Manual
2.5.2 FTDI COM Port Troubleshooting
If the FTDI device driver did not install properly, there would be no assigned COM port number for the FTDI controller.
To repeat the USB driver installation, see Section 2.1
Windows might associate a ballpoint device to the FTDI USB controller. When this occurs a FTDI device COM port
assignment is available through the HyperTerminal, but there is no communications data. Verify whether a ballpoint
device has been added to the human interface devices through the device manager. See Section 2.1.1
device manager. If a ballpoint device exists, delete it and unplug and replug the evaluation kit’s USB cable.
.
for access to the
Rev. 1.0 16
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MAX78615+PPM Evaluation Kit User Manual
3 Graphical User Interface (GUI)
A graphical user interface (GUI) is included on the MAX78615+PPM evaluation kit CD to facilitate quick evaluation of the
MAX78615+PPM energy measurement device. The GUI requires Microsoft.NET Framework 4 on the PC, for which the
GUI is to execute on. Upon invoking the GUI executable file, an installation wizard can appear if Microsoft.NET
Framework 4 is not installed on the PC. Follow the installation wizard instructions, or download Microsoft.NET
Framework 4 from the Microsoft website prior to launching the GUI.
3.1 GUI Initialization
The graphical user interface (GUI) is self-explanatory when used with the MAX78615+PPM data sheet. The user,
however, should note the following about the evaluation kit hardware:
•Serial COM Port:
Following the installation instructions in Section 2, launch the GUI executable. Click the Connection
drop-down menu and select Connect.
The GUI auto-detects the presence of an SPI device, if the evaluation kit is not connected or the MAX78615+PPM
interface selection is different than SPI an error message is displayed.
3.1.1 Device Tab
The Device tab shows to current firmware build as well as the temperature of the remote ADCs and line
frequency being measured.
Rev. 1.0 17
Page 18
MAX78615+PPM Evaluation Kit User Manual
3.1.2 Direct Tab
The Direct tab allows access to the all the registers and can both read and write to the registers. The data can be
displayed with the scale factor and units applied for convenience. In the example below the voltage register is
being read, so the volts option is used to display the data.
3.1.3 Calibration Tab
The Calibration tab is used to calibrate all the measurement channels. The calibration targets can be viewed and
changed and the scaling parameters are also displayed for convenience. Use the Calibration Options to select
the parameters to be calibrated. The calibration and NVRAM are also saved using the provided button.
Rev. 1.0 18
Page 19
MAX78615+PPM Evaluation Kit User Manual
3.1.4 Power Tab
The Power tab displays the current power being consumed by the loads. P (active power), Q (reactive power),
and S (apparent power) are displayed along with the voltage, current, crest factor, and power factor are also
displayed.
3.1.5 Energy Tab
The Energy tab displays the accumulated power both into and out of the load and the balance (net).
Rev. 1.0 19
Page 20
MAX78615+PPM Evaluation Kit User Manual
3.1.6 Fundamental Tab
The Fundamental tab is used to display the fundamental and harmonic measurements for voltage, current and
po w e r. The harmonics displayed can be selected with the get/set harmonic buttons.
Rev. 1.0 20
Page 21
MAX78615+PPM Evaluation Kit User Manual
3.1.7 Remotes Tab
The Remotes tab is used to display the communication status between host (MAX78615+PPM) and the remote
ADCs.
Rev. 1.0 21
Page 22
MAX78615+PPM Evaluation Kit User Manual
3.1.8 Alarm Tab
The Alarm tab is a user definable display of whatever parameters are required in a particular application. The
alarms are described in detail in the MAX78615+PPM data sheet.
Rev. 1.0 22
Page 23
MAX78615+PPM Evaluation Kit User Manual
MAX78700
MAX78700
MAX78700
MAX78615
+PPM
J21
3.3V
REGULATOR
USB
Controller
SPI/UART
USB
3.3V
J1
J16
SW1
J14
RS485
Trasceiver
J22
ABCN
SHUNT
SHUNT
SHUNT
ABCN
LOAD Y
SOURCE Y
DI/O
ISOLATION
Channel 1
(A)
Channel 2
(B)
Channel 3
(C)
4Basic Connection Setup
This section shows examples of basic connections of the MAX78615+PPM evaluation board to Wye and Delta
systems. The proper equations are selected by setting the CONFIG register; refer to the MAX78615+PPM data
sheet.
Table 14. MAX78615+PPM Evaluation Board (Daughter Board) Bill of Materials
ITEM QUANTITY REFERENCE PART PCB FOOTPRINT
1 3 C1, C3, C5 0.047µF, 50V 603
2 1 C2 10pF 603
3 3 C4 0.1µF 603
4 2 C6 10µF 805
5 3 L1, L2, L3 1K at 100MHz 805
6 3 R1, R5, R7 750Ω 0.1% 603
7 2 R2, R3 1MΩ 0.1% 603
8 2 R4, R8 10kΩ 1%603
9 7 R6 0.004Ω 1% 2.5W2512
10 1 T1 Transformer
11 5 U1 MAX78700 TSSOP 10
Rev. 1.0 31
Page 32
MAX78615+PPM Evaluation Kit Manual Chapter 6: Contact Information
6 Contact Information
For more information about Maxim products or to check the availability of the MAX78615+PPM, contact
technical support at www.maximintegrated.com/support.
Rev. 1.0 32
Page 33
MAX78615+PPM Evaluation Kit Manual Chapter 6: Contact Information
Pages
Changed
0
2/15
Initial release
—
Revision History
Revision Date Description
Rev. 1.0 33
Page 34
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Maxim Integrated: MAX78615PPM70EVK1#
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