MPS EVKT-MP8833 User manual

User Guide
MP8833 Evaluation Kit (EVKT-MP8833)

User Guide
MP8833 Evaluation Kit (EVKT-MP8833)
MP8833 Evaluation Kit User Guide Rev 1.0 www.MonolithicPower.com 1
2/27/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.
Table of Contents
Overview................................................................................................................................................ 2
Introduction...................................................................................................................................... 2
Kit Contents ..................................................................................................................................... 2
Features and Benefits...................................................................................................................... 3
Kit Specifications............................................................................... Error! Bookmark not defined.
Section 1. Hardware Specifications........................................................................................................ 4
1.1 Personal Computer Requirements.............................................................................................. 4
1.2 EV8833-D-01B Specifications..................................................................................................... 4
1.3 EVKT-USBI2C-02 Specifications................................................................................................ 4
Section 2. Software Requirements......................................................................................................... 5
2.1 Software Installation Procedure.................................................................................................. 5
Section 3. Evaluation Kit Test Set-Up.................................................................................................... 6
3.1 Hardware Set-Up........................................................................................................................ 6
3.2 Powering Up the EVB................................................................................................................. 6
3.3 Software Set-Up......................................................................................................................... 6
3.4 Troubleshooting Tips.................................................................................................................. 9
Section 4. I2C Transfer Data................................................................................................................ 11
Section 5. Ordering Information........................................................................................................... 12

User Guide
MP8833 Evaluation Kit (EVKT-MP8833)
MP8833 Evaluation Kit User Guide Rev 1.0 www.MonolithicPower.com 2
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Overview
Introduction
The EVKT-MP8833 is an evaluation kit for the MP8833, which is a monolithic thermoelectric cooler
controller with built-in internal power MOSFETs. The MP8833 provides features such as TEC
voltage/current limiting, and can be controlled through an I2C serial interface.
Kit Contents
EVKT-MP8833 kit contents (items listed below can be ordered separately, and the GUI installation file
and supplemental documents can be downloaded from the MPS website):
#
Part Number
Item
Quantity
1
EV8833-D-01B
MP8833GD evaluation board
1
2
EVKT-USBI2C-02
Includes one USB to I2C communication interface, one USB cable, and
one ribbon cable
1
n
Figure 1: EVKT-MP8833 Evaluation Kit Set-Up
Input
Power
Supply
Input
Output
Load
USB
Cable
Ribbon
Cable
Evaluation
Board
USB to I2C Communication
Interface EVKT-USBI2C-02
GUI

User Guide
MP8833 Evaluation Kit (EVKT-MP8833)
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Features and Benefits
The MP8833 is highly customizable. Users can program the MP8833 via the MPS I2C GUI.
⚠Any changes made in I2C mode are not retained once the EVB shuts down.
Adjustable features are outlined below.
I2C
 Selectable soft-start current
 System on/off control
 Discharge time set after system shutdown
 Selectable heating/cooling output current limit
 Enable or disable heating/cooling output current limit
 Enable or disable VIN over-voltage protection (OVP)
 Selectable heating/cooling output voltage limit
 Enable or disable heating/cooling output voltage limit
 Selectable LDO hiccup current limit
 Selectable buck hiccup current limit
 TEC voltage/current monitor
 Status monitor
Kit Specifications
Features
Specification
Start-Up Voltage
2.7V to 5.5V
Output Voltage
Cooling voltage limit to heating voltage limit
Operating Systems Supported
Windows XP, 7, or later
System Requirements
Minimum 15 MB free
GUI Software
11 register controls: ILIMT, VLIMIT, IMON, VTEC, STATUS
EVB Size (LxW)
6.3cmx6.3cm

User Guide
MP8833 Evaluation Kit (EVKT-MP8833)
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Section 1. Hardware Specifications
1.1 Personal Computer Requirements
The following requirements must be met to use the EVKT-MP8833:
Operating system of Windows XP, 7, or later
Net Framework 4.0
PC with a minimum of one available USB port
At least 1 MB of free space
1.2 EV8833-D-01B Specifications
The EV8833-D-01B is an evaluation board for the MP8833GD. For more information, refer to the
EV8833-D-01B datasheet.
Feature
Specification
Start-Up Voltage
2.7V to 5.5V
Output Voltage
Cooling voltage limit to
heating voltage limit
EVB Size (LxW)
6.3cmx6.3cm
Figure 2: EV8833-D-01B Evaluation Board
1.3 EVKT-USBI2C-02 Specifications
The EVKT-USBI2C-02 refers to the USB to I2C communication interface device, which connects the
EVB, the PC, and its supporting accessories. It provides I2C and PMBus capabilities. Together with the
Virtual Bench Pro and GUI tools, it provides a quick and easy way to evaluate the performance of MPS
digital products. For more details, refer to the EVKT-USBI2C-02 datasheet.
Figure 3: EVKT-USBI2C-02 Communication Interface

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Section 2. Software Requirements
2.1 Software Installation Procedure
Programming occurs through the MPS I2C GUI. Follow the instructions below to install the software:
Note: This software can be downloaded from the MPS website.
1. Download the GUI installation file tiled “MP8833 GUI” from the MPS website.
2. Extract the zip package and double-click the .exe file to open the set-up guide (see Figure 4). If a
protection window comes up, click “More info,” then click “Run anyway.”
3. Wait for the status screen to verify that installation is complete (see Figure 5).
Figure 4: MPS I2C GUI Set-Up Guide
Figure 5: Driver Set-Up Success

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Section 3. Evaluation Kit Test Set-Up
3.1 Hardware Set-Up
The hardware must be configured properly prior to use. Follow the instructions below to set up the EVB:
1. Locate the proper wires to connect the EVB to the EVKT-USBI2C-02 communication interface.
2. Connect SCL, SDA, and GND (see Figure 6). Refer to the evaluation board datasheet for further
clarification.
3. Use the USB cable to connect the EVKT-USBI2C-02 communication interface to the PC.
Figure 6: EVB to MPS I2C Communication Interface Wire Connection
3.2 Powering Up the EVB
1. Preset the power supply between 2.7V and 5.5V.
2. Turn the power supply off.
3. Connect the power supply terminals to:
a. Positive (+): VIN
b. Negative (-): GND
4. Connect the load to:
a. Positive (+): TEC+
b. Negative (-): TEC-
5. Turn the power supply on after making the connections. The board should start up automatically.
3.3 Software Set-Up
After connecting the hardware according to the steps above, follow the steps below to use the
GUI software:
1. Start the software. It should check the EVB connection automatically.
If the connection is successful, the address will be listed in the section titled “Slave Address”
(see Figure 7).

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Figure 7: Appearance of Address Indicates Successful Connection
If the connection fails, one of two warnings can appear at the bottom of the screen:
o“No Slave Found, Please check the connection!” This means that the evaluation board is not
connected (see Figure 8).
o“Device is not available, Please check the connection!” This means that the USB I2C
communication interface is not connected (see Figure 9).
No Slave Found, Please check the connection!
Figure 8: Warning Indicates Unsuccessful Connection –Evaluation Board Not Connected

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Device is not available, Please check the
connection!
Figure 9: Warning Indicates Unsuccessful Connection –USB I2C Communication Interface Not
Connected
2. Establish a successful connection, then proceed to Step 3. If there is no connection, check the
connections between the EVB, communication interface, and PC. Re-plug the USB into the PC and
restart the GUI.
3. Select the MP8833 from the drop-down menu titled “Part Numbers.” The Register Control menu
should appear on the left side. The I2C register values should be read automatically and displayed on
the right (see Figure 10).
Figure 10: Values from I2C Shown in Table

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4. Find the item to change, then choose a value from the drop-down menu. The item’s changed
information should appear on the right side (see Figure 11).
Figure 11: Changing Values Using the Software
⚠All changes made via the I2C will be restored to default values once the EVB turns off.
3.4 Troubleshooting Tips
Note: USBI2C-02and USBI2C-01 drivers are not
compatible. USBI2C-02 uses USBXpress and
USBI2C uses Cyusb3. USBI2C-02 is the
recommended device for the MPS PMBus and
I2C.
EVKT-USBI2C-01
If the USBI2C-01 driver is not properly installed,
manual installation is required. Follow the steps
below:
1. Open the Device Manager and select “Update
Driver Software” (see Figure 12).
2. Click “Browse My Computer for Driver
Software,” find the driver, and install.
Figure 12: Updating the Driver Software

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EVKT-USBI2C-02
If the USBI2C-02 driver is not properly installed,
manual installation is required. Follow the steps
below:
Note: Check driver version. Find “USBXpress
Device”in the Device Manager under USB
controllers.
Right-click and view properties. Ensure the
driver version matches the newest version (see
Figure 13).
1. Install the correct USBXpress “.exe” file
Choose either 32-bit or 64-bit operating
system.
32-bit: USBXpressInstaller_x86.exe
64-bit: USBXpressInstaller_x64.exe
2. Connect the EVKT-USBI2C-02
communication interface to the PC with the
USB cable.
Figure 13: Determining the Driver Software

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Section 4. I2C Transfer Data
The MP8833 includes a full I2C slave controller. The I2C slave fully complies with the I2C specification
requirements. It requires a start condition, valid I2C address, register address byte, and data byte for a
single data update. After receiving each byte, the MP8833 acknowledges by pulling the SDA line low
during the high period of a single clock pulse. A valid I2C address selects the MP8833. The MP8833 then
performs an update on the falling edge of the LSB byte. Figure 14 and Figure 15 show examples of the
I2C read and write commands.
S Slave Address WR A Register Address K Write DataA A P
8 Bits 8 Bits 8 Bits
Master to Slave
Slave to Master
A = Acknowledge (SDA = Low)S = Start Condition
P = Stop Condition
NA = Not Acknowledge (SDA = High)
WR Write = 0
RD Read = 1
Figure 14: I2C Write Example
S Slave Address WR A Register Address K Read Data KA A P
Master to Slave
Slave to Master
A = Acknowledge (SDA = Low)S = Start Condition
P = Stop Condition
NA = Not Acknowledge (SDA = High)
8 Bits 8 Bits 8 Bits
Sr Slave Address RD NA
8 Bits
WR Write = 0
RD Read = 1
Register address to read specified Read register data from current register location
Sr = Repeated
Start Condition
Figure 15: I2C Read Example

User Guide
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Section 5. Ordering Information
The components of the evaluation kit can be purchased separately depending on user needs.
Part Number
Description
EVKT-MP8833
Complete evaluation kit
Contents of EVKT-MP8833
EV8833-D-01B
MP8833GD evaluation board
EVKT-USBI2C-02
Includes one USB to I2C communication interface device, one
USB cable, and one ribbon cable
Order directly from MonolithicPower.com or our distributors.

Mouser Electronics
Authorized Distributor
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EVKT-MP8833