Maxim Integrate d cannot a ssume responsibi lity f or use of a ny circui try oth er than circuitry entirel y embodi ed in a Maxim I ntegrated p roduct. No circui t
patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
4.5 78M6610+PSU 24-Pin Evaluation Board Bill of Materials ....................................................... 19
4.6 Shu nt Ada ptor Board Sche matics ............................................................................................ 22
4.7 Shunt Adaptor Board Bill of Materials ...................................................................................... 23
4.8 Shu nt Ada ptor Board PCB La youts ......................................................................................... 24
5 Included Documentation .................................................................................................................. 26
6 Contact Information .......................................................................................................................... 26
Revision History ........................................................................................................................................ 26
Table 4: 78M6610+PSU 16-Pin Evaluation Board Bill of Materials .................................................................... 15
Table 5: 78M6610+PSU 24-Pin Evaluation Boar d Bill of Materials .................................................................... 19
Table 6: Shunt Adaptor Board Bill of Materials ................................................................................................... 23
Rev 2 3
78M6610+PSU Evaluation Kit User Manual
PART
TYPE
78M6610+PSU/EV#1
Evaluation Kit
Windows and Windows XP are registered trademarks of Microsoft Corp.
1 Introduction
The 78M6610+PSU Evaluation Kit is a design example of a modular daughter card for integration into AC-DC
power-supply units. The kit demonstrates the capabilities and performance of 78M6610+PSU energy
measurement device in both the 16-pin and 24-pin pack ages .
The kit is connected 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 the serial UART interface for
simplified access to measurement data and controls.
1.1 Ordering Information
#Denotes a RoHS-compliant device that may include lead that is
exempt under the RoHS requirements.
1.2 Package Contents
The following are inclu ded with the 78M6610+PSU Evaluation Kit:
• 78M6610+PSU Evalu ati on Boards (16/24-pin)
• Shunt Adaptor Board
• USB Cable Assembly USB A-B 28/24 1.8M (Tyco/Amp 1487588-3)
• CD with Documentation, GUI Application, and USB Drivers
1.3 System Requirements
In addition to an AC source and load for measuring, the 78M6610+PSU Evaluation Kit requires use of a PC
with the following features:
EXERCISE CAUTION WHEN LIVE AC VOLTAGES ARE PRESENT!
Standard ESD precautions must be taken when ha n d ling electronic equipment. The
78M6610+PSU contains ESD protected interfaces.
Do not connect test equipment or external development boards directly to the
78M6610+PSU hardware. Damage to the 78M6610+PSU and external equipment will
occur due to the 78M6610+PSU’s “high side” reference topology. The
78M6610+PSU’s V3P3 supply rail (i.e., “high side”) is connected directly to Neutral
(Earth Ground) creating a ground reference disparity with any properly grounded
external equipment.
The board components and firmware settings are designed to operate with the following nominal AC electrical
ranges:
Voltage Current Line Frequency
10–240 VAC 10mA–20A 46–64Hz
1.5 Testing the 78M6610+PSU Boards Prior to Shipping
Before every 78M6610+PSU Kit is shipped, the following procedures have been performed at the factory:
•Full Calibration – Precise energy source equipment is used to calibrate the current, voltage, and ambient
temperature for both the 16-pin and 24-pin daughter cards
•Accuracy Test – A “bench” level test ensures the energy accuracy is within ±0.5%.
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78M6610+PSU Evaluation Kit User Manual
2 Installation
2.1 USB Driver Installation
This Evaluation Kit includes an is ola ted US B interface for serial communications with a PC. The FTDI USB
controller IC FT232R 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 78M6610+PSU Eva luati on Kit to the PC, the Found New Hardware Wizard should
automatically launch and ins tall the appr opria te dr iver 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
FT232R controller is powered from the USB cable and is active even when no AC power is applied to the
78M6610+PSU Evaluation Kit.
Note: If an older FTDI dri ver has been previously installed, it is recommended to remove the o lder version
before installing this ne wer FT DI driver. Exec ut e th e ftdiClean.exe utility from the FT DI U SB D ri ver and
Utilities subdirectory.
For FTDI driver support on other operating systems, refer to FTDI’s website at www.ftdichip.com.
2.2 Confirm COM Port Mapping
•Launch the Control Panel and click on the System icon.
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78M6610+PSU Evaluation Kit User Manual
COM Port:
•The System Properties screen appear s. 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.
2.2.1 FTDI COM Port Trouble Shooting
If the FTDI device driver did not install properly, there would be no assigned COM port number for the FTDI
controller. Repeat the USB Driver Installation, see Section
Microsoft Windows may associate a Ball Point device to the FTDI USB controller. When this occurs a FTDI
device COM port assignment is available via HyperTerminal but there is no communications data. Verify if a
Ball Point device has been added to the “Human Interface Devices” via the Device Manager. See
for access to the Device Manager. If a Ball Point device exists, delete it and unplug and replug the Evaluation
Kit’s USB cable.
2.1.
Section 2.2
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78M6610+PSU Evaluation Kit User Manual
Connector to Shunt
Adaptor Board
2.3 Basic Connection Setup
Figure 1shows the basic connections of the 78M6610+PSU Evaluation Kit for use with external equipment.
The shunt adaptor board consists of the host side components necessary for the evaluation environment that
would be replaced by the target system. This host board provides a USB serial UART controller, serial
interface DC-DC power isolator, a current shunt, and AC wiring terminals.
After connecting the USB cable to J11 and installing the USB drivers, one can plug the 78M6610+PSU
Evaluation Board into the Shunt Adaptor Board as shown below.
Figure 2: 78M6610+PSU Evaluation Board
Figure 3: 78M6610+PSU Evaluation Kit Connections
Rev 2 9
78M6610+PSU Evaluation Kit User Manual
Attach an AC source and AC load to the Shunt Adaptor Board as shown below. Connect J1 and J3 to an
external AC power source. Connect J2 and J4 to the load to be measured. The 78M6610+PSU Evaluation Kit
hardware is designed for 120 VAC and 230 VAC (nominal) up to 300 VAC (max).
AC Load
NEUTRAL
AC Source
NEUTRAL
AC Source
Earth GND
AC Load
Earth GND
AC Source
LINE
AC Load
LINE
USB
Connector
Figure 4: Shunt Adaptor Board Connections
10 Rev 2
78M6610+PSU Evaluation Kit User Manual
Reference
2.4 Jumper and Switch Settings
The following tables describe the 78M6610+PSU Evaluati on Kit jumpers and switches and their setting for
different configurations.
J2 Power Connector to Shunt Adaptor Boar d
J3 Sensor Connector to Shunt Adaptor Board
J4 UART Connector to Shunt Adaptor Board
J5 External Temperature Sensor Connector
J7 SPI Connector
J13 Relay Connector
J14 AC Critical Connector
TP11 Optional Relay LED Connector
TP12 Optional AC Critical LED Connector
TP14 UART RX Test Point
TP15 UART TX Test Point
J7 SPI Connector
J13 Relay Connector
J14 AC Critical Connector
J16 AC Fault Connector
TP11 Optional Relay LED Connector
TP12 Optional AC Critical LED Connector
TP13 Optional AC Fault LED Connector
TP14 UART RX Test Point
TP15 UART TX Test Point
J7 Sensor connector to 78M6610+PSU Evaluation Board
J9 Optional UART communications connector
J10
J12 UART connector to 78M6610+PSU E valu ati on Bo ar d
J13 Power connector to 78M6610+PSU Evalu ati on Bo ard
USB controller TX jumper. Default = Installed
Description
Remove when using J9.
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78M6610+PSU Evaluation Kit User Manual
3 Graphical User Interf a c e (G UI)
A graphical user interface (GUI) is included on the 78M6610+PSU Evaluati on Ki t CD to facilitate quick
evaluation of the 78M6610+PSU 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 may
appear if Microsoft.NET Framework 4 is not installed on the PC. Follow the installat ion wi zard instr uc tions , o r
download Microsoft.NET Framework 4 from the Microsoft web site prior to launching the GUI.
3.1 GUI Initialization
The GUI is self-explanatory when used with the 78M6610+PSU Data Sheet. The user, however, should note
the following about the evaluation kit hardware:
1. Serial COM Port:
Following the installation instructions in Section 2, launch the GUI executable and click the
“Scan Ports” button to populate the drop-down menu with the available COM ports. Select the
COM port assigned to the evaluation kit and leave the baud rate set to 38400 (default)
2. SSI ID:
Use SSI ID 2 for the 78M6610+PSU Evaluation Kit then click “Connect”. Upon successful
communication with the evaluation kit, the firmware revision field will be green and populated
with the revision of the 78M6610+PSU firmware.
3. Register Addresses:
Common measurement and configuration parameters have their own labeled cells. For direct
register read/writes, reference the byte-addressable registers in the data sheet for the
synchronous serial interface (SSI) protocol.
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78M6610+PSU Evaluation Kit User Manual
t
RT1
DNP THERMISTOR
TP12
DNP TP
1
J5
Vin Ext
1
2
3
3.3V
ISO UAR T TX
C14
0.1UF
0603
/AC_CRITICAL
C5
0.1UF
0603
R5
3k
0603
C13
1000pF
0603
/RELAYCTRL
D1
GREEN or BLU E
C7
1000pF
0603
J13
CON2
1
2
R21 220
0603
R15
360
0603
TP14
DNP TP
1
UA R T TX
3.3V
3.3V
U1
MC78PC33
SOT23-5
GND
2
EN
3
VOUT
5
VIN
1
NC
4
3.3V
3.3V
3.3V
J2
5V
1
2
3.3V
C2
0.1uF
0603
5V
C1
4.7uF
0805
C4
0.1uF
0603
C3
4.7uF
0805
J3
UART
1
2
3
4
UART RX
TP15
DNP TP
1
COMM 5V RETURN
R18
500
0603
CO MM 5 V
R16
500
0603
.
J7
SPI PORT
DIO8
1
SSB
2
MOSI
3
SCK
4
MISO
5
GND
6
GND
7
*RESET
9
V3P3
10
GND
8
R25
750
0603
U4
TCMT1107
12
43
D2
RED
R23 220
0603
U5
TCMT1107
12
43
3.3V
R17
150
0603
R4
39
0603
C17
0.1uF
0603
LOAD RETURN
NEUTRAL
LINE_SENSE
NEUTRAL
3.3V
CO MM 5 V
Connection for external
10K NTC Thermistor
J4
4 HEADER
1
2
3
4
R8
750
0603
C15
1000pF
0603
C16
0.1uF
0603
3.3V
U6
TCMT1107
12
43
/RELAYCTRL
U9
TCMT1107
12
43
J16
CON2
1
2
R22
500
0603
ISO UART RX
R13
500
0603
3.3V
R14
10K
0603
/AC_CRITICAL
C6
0.1uF
0603
TP11
DNP TP
1
U3
78M6610+PSU/C
V3P3A
13
AIP
14
GNDA
3
AIN
15
AVP
1
ATEMP1
16
SSB/DIR
6
SPCK/ADDR0
12
ACCRIT
7
SDI/RX/SDAO
11
AVN
2
ACFAULT
5
IFCONFIG
4
GNDD
9
SDO/TX/SDAI
10
V3P3D
8
R7
750
0603
DNP
DNP
DNP
4 Schematics, Bill of Mate rials, and PCB Layouts
This section includes the schematics, bill of materials, and PCB layouts for the 78M6610+PSU Evaluation Boards and the Shunt Adaptor Board.