•Assembled and tested evaluation board/module in anti-static bag.
•Ribbon cable assembly with 16-pin connector
•CD-ROM containing:
• Supporting documentation for featured device (including data sheet and user's guide)
– Schematic of evaluation board
–PCB artwork
– Bill of material for evaluation board
– Instruction sheet for evaluation board
• SPIGen 5.0.1 software
•Warranty card
2Freescale Semiconductor
KT33926UG, Rev. 2.0
Page 3
2Important Notice
Freescale provides the enclosed product(s) under the following conditions:
This evaluation kit is intended for use of ENGINEERING DEVELOPMENT OR EVALUATION
PURPOSES ONLY. It is provided as a sample IC pre-soldered to a printed circuit board to make it easier
to access inputs, outputs, and supply terminals. This EVB may be used with any development system or
other source of I/O signals by simply connecting it to the host MCU or computer board via off-the-shelf
cables. This EVB is not a Reference Design and is not intended to represent a final design
recommendation for any particular application. Final device in an application will be heavily dependent
on proper printed circuit board layout and heat sinking design as well as attention to supply filtering,
transient suppression, and I/O signal quality.
The goods provided may not be complete in terms of required design, marketing, and or manufacturing
related protective considerations, including product safety measures typically found in the end product
incorporating the goods. Due to the open construction of the product, it is the user's responsibility to take
any and all appropriate precautions with regard to electrostatic discharge. In order to minimize risks
associated with the customers applications, adequate design and operating safeguards must be provided
by the customer to minimize inherent or procedural hazards. For any safety concerns, contact Freescale
sales and technical support services.
Should this evaluation kit not meet the specifications indicated in the kit, it may be returned within 30 days
from the date of delivery and will be replaced by a new kit.
Freescale reserves the right to make changes without further notice to any products herein. Freescale
makes no warranty, representation or guarantee regarding the suitability of its products for any particular
purpose, nor does Freescale assume any liability arising out of the application or use of any product or
circuit, and specifically disclaims any and all liability, including without limitation consequential or
incidental damages. “Typical” parameters can and do vary in different applications and actual
performance may vary over time. All operating parameters, including “Typical”, must be validated for each
customer application by customer’s technical experts.
Freescale does not convey any license under its patent rights nor the rights of others. Freescale products
are not designed, intended, or authorized for use as components in systems intended for surgical implant
into the body, or other applications intended to support or sustain life, or for any other application in which
the failure of the Freescale product could create a situation where personal injury or death may occur.
Important Notice
Should the buyer purchase or use Freescale products for any such unintended or unauthorized
application, the buyer shall indemnify and hold Freescale and its officers, employees, subsidiaries,
affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable
attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with
such unintended or unauthorized use, even if such claim alleges that Freescale was negligent regarding
the design or manufacture of the part. Freescale™ and the Freescale logo are trademarks of Freescale
Semiconductor, Inc. All other product or service names are the property of their respective owners.
The KIT33926PNBEVBE Evaluation Board (EVB) is an easy-to-use circuit board that allows the user to
exercise all the functions of the MC33926 H-Bridge circuit. The EVB communicates to a PC through a
USB/SPI Dongle connected to the PC’s USB port. The Freescale SPIGen program provides the User
Interface to the MC33926 EVB’s SPI port and allows the user to send commands to and receive error
messages from the IC. There is also a MC33810 circuit on the EVB which contains four, low side, drivers
and four General Purpose MOSFET Gate drivers which are used to provide PWM signals to the various
MC33926 inputs.
4Evaluation Board Features
•A MC33926 H-Bridge IC
•A MC33810 PWM Driver (IID) IC
•A USB to SPI Dongle interface, through which 5V power is supplied
•Power conditioning circuitry
•A set of seven Input Select Jumpers.
5MC33926 Device Features
This MC33926 is designed primarily for automotive electronic throttle control, but is applicable to any
low-voltage DC servo motor control application within the current and voltage limits stated in this
specification. This device has the following features:
•8.0 V to 28 V Continuous Operation (Transient Operation from 5.0 V to 40 V)
•225 m maximum RDS(ON) @ 150°C (each H-Bridge MOSFET)
•3.0 V and 5.0 V TTL / CMOS Logic Compatible Inputs
•Overcurrent Limiting (Regulation) via Internal Constant-Off-Time PWM
•Output Short Circuit Protection (Short to VPWR or Ground)
There current version of SPIGen is designed to run on a USB enabled computer with Windows XP,
Windows 2000, or Windows NT.
This version of SPIGen includes a README.txt file which will describe the operating systems where the
software should be installed. Before you install the program, refer to the SPIGen README.txt file to check
the compatibility of the installation program and your computer operating system.
To install the software from the CD-ROM, insert the CD-ROM into your CD drive. Click the Start button,
and then click “Run…”.
While running Windows NT, Windows 2000, or Windows XP, type
“D:\SPIGen_Win_NT_2000_XP\Setup.exe” in the box, and then click “OK”.
Several temporary files will be copied to your computer, and then the Installation Wizard will guide you
through the rest of the process.
To use SPIGen, Go to the Windows Start menu, then Programs, then SPIGen, and click on the SPIGen
icon. The SPIGen “Generic SPI Generator” graphic user interface (GUI) will appear. Go to the File menu
in the upper left hand corner of the GUI, and select Open, then browse the CD to find and select the
SPIGen Configuration “.spi” file for the EVB you are using. Click Open, and SPIGen will open a
specifically configured SPI command generator for your EVB.
6Freescale Semiconductor
Figure 3. SPI Generator GUI
KT33926UG, Rev. 2.0
Page 7
10EVB Setup and Using the Hardware
To perform the examples included in the CD the following connections and setup must be performed:
1.Make sure the SPIGen 5.0X program is installed on the PC and it can communicate with the USB/SPI Dongle as
described in that kit’s documentation.
2.Connect the USB/SPI Dongle to the MC33926 EVB via a 16 pin ribbon cable. Make sure to orient the cable so that
pin1 on both the USB/SPI Dongle and the MC33926 EVB are connected correctly, pin 1 to pin 1.
3.Connect the USB/SPI Dongle to a PC, LED 2 on the USB/SPI Dongle and the VDD LED on the MC33926 board
should both be illuminated.
4.Attach a +12 VDC supply (do not turn on power yet) to the power connector on the MC33926 EVB, making sure to
observe the GND and +12 V terminals. The current capability of the +12 V supply should exceed the maximum
total current that the number of simultaneously ON loads will require.
5.Attach loads to the MC33810 OUT0 - OUT3 terminals between the VPWR terminals and the OUTx terminals. One
possible demo load is a 10 W halogen G4 Base T3 bulb (used in landscape lighting applications). This load will
draw approximately 850 mA and fits nicely into the screw terminals.
6.Attach 10 W halogen G4 Base T3 bulbs to the H-Bridge OUT1 and OUT-2 terminals from OUT1 to GND and
another load from OUT2 to GND.
7.Launch SPIGen and from the “File” menu, select “Open” and browse to the CD containing the
“MC33926_EVB_CONFIGURATION_FILE.spi” file. The title on the SPIGen screen should change from
“Generic SPI Generator” to “MC33926 SPI Generator”.
EVB Setup and Using the Hardware
8.Turn on the +12 Volt Supply. The bulbs connected to the H-Bridge OUT1 and OUT2 should illuminate immediately.
Verify that all is working correctly by clicking on the “Extra Pins” button in the SPIGen main screen and then click
on the DATA 0 “High” button. The OUT1 bulb should extinguish. Clicking on the DATA 1 “High” button should
extinguish the OUT2 bulb.
9.Click on the Control 0 “High” button. The bulb connected to OUT0 on the MC33926 EVB and LED1 on the
USB/SPI Dongle should be illuminated. Click on the Control 0 “Low” button and the bulb connected to OUT0 and
LED1 on the USB/SPI Dongle.
This EVB consists of a 33926 H-Bridge, a 33810 PWM Driver (IID) circuit, a USB to SPI Dongle interface,
power conditioning circuitry, and a set of seven Input Select Jumpers. All +5.0
by the EVB is obtained via the USB/SPI Dongle interface. The Hardware Block Diagram is shown below:
volt VDD power required
11.1LED Display
Several LED’s are provided as visual output devices for the MC33926 EVB board. A list of the LED
devices is shown below:
8Freescale Semiconductor
1.VDD LED - Indicates when a +5.0 Volt supply is connected
2.VPWR LED - Indicates when +12 Volt supply is connected
3.Fault LED - Illuminates when the MC33926 detects a fault
4.Output LED - Red/Green LED that indicates which direction the current is flowing in the legs of the H-Bridge.
Figure 4. 33926 EVB Block Diagram
KT33926UG, Rev. 2.0
Page 9
11.2I/O Jumper Definitions (J3)
The EVB contains seven jumpers that connect the inputs of the 33926 as follows (Bold = factory setting):
NAMEPositionConnection
INPUT 1 1-2/DATA0 2-3/BGD0
INPUT 121-2/DATA12-3/BGD1
INVERT1-2/GND 2-3/DATA4
ENABLE1-2/GND2-3/VDD
DISABLE_11-2/GND2-3/BGD2
DISABLE_2B1-2/VDD2-3/BGD3
SLEW1-2/GND2-3/VDD
The DATA0 -DATA4 signals are parallel outputs from the USB/SPI Dongle that can be controlled directly
from the SPIGen program. The BGD0 - BGD3 signals are the outputs of the MC33810 pre-drivers (GD0
-GD3) after being buffered by discrete MOSFETS. (See the schematic for detailed information) The GD0
- GD3 outputs can be set-up to provide a PWM signal, to vary the H-Bridge output. The buffered PWM
signals (BGD0 - BGD3)can be selected via the jumpers to be connected to the Input 1, Input 2, Disable_1
or Disable_2B inputs. This flexibility is provided to illustrate the many ways the MC33926 can be driven
to achieve the same result. An example configuration file called
“MC33926_EVB_CONFIGURATION_FILE.spi” is provided on the CD which contains batch file
examples. In these batch file examples are the instructions to set-up the MC33810 to PWM the GDx
outputs. The MC33810 data sheet (also on the CD provided) describes, in detail, the way to set the PWM
frequency and duty cycle for each of the GD outputs (and corresponding BGDx outputs).
If the user prefers to supply the various MC33926 input signals externally, other than from the USB-SPI
Interface or the PWM signals (BGDx), the jumpers can be removed and connections can be made to the
open pin number 2’ s.
Evaluation Board Hardware Description
11.3USB/SPI Dongle Connector
The USB/SPI dongle connector is a 16 pin,.1” center, dual-row connector that is designed to interface
directly to the USB/SPI Dongle unit. The USB/SPI dongle connector consists of the following 16 pins:
NumberNameDescription
1CSBSPI signal, Chip Select Bar
2CNTL2Parallel port signal CNTL2
3SOSPI signal, Serial Out
4CNTL1Parallel port signal CNTL1
5SISPI signal, Serial In
6CNTL0Parallel port signal CNTL0
Freescale Semiconductor9
KT33926UG, Rev. 2.0
Page 10
Evaluation Board Hardware Description
Power Terminal
SPI/USB Dongle
Connector
Connector
H-Bridge Output
Connector
MC33810 Output
Terminal Connector
NumberNameDescription
7SCLKSPI signal, Serial Clock
8DATA4Parallel port signal DATA4
9CNTL3Parallel port signal CNTL3
10DATA3Parallel port signal DATA3
11VDD+5 Volt VDD from USB
12DATA2Parallel port signal DATA2
13NCUnused
14DATA1Parallel port signal DATA1
15GNDSignal Ground
16DATA0Parallel port signal DATA0
This connector mates with the 16 conductor flat cable that connects to the USB/SPI Dongle
(KITUSBSPIDGLEVME).
11.4Screw Terminal Connections -
The MC33926PNBEVBE board contains input and output screw terminal connections to allow easy
access to the MC33926’s drive circuits.
The diagram below shows the locations of the screw terminals and their functional definitions:
Figure 5. PCB Top Assembly Layer with Screw-Terminal Connectors Indicated
10Freescale Semiconductor
KT33926UG, Rev. 2.0
Page 11
11.5Power Terminal Connector
The Power Terminal Connector is a two position screw terminal that provides +12 Volt and Ground
Terminals. The Ground terminal is marked “GND” and the +12
11.6H-Bridge Terminal Connector
The H-Bridge Terminal Connector is a three position screw terminal that provides the following three
connections:
1.Output 1 of the H-Bridge - Pins 12, 13, 14, and 15 of the MC33926
2.Ground
3.Output 2 of the H-Bridge - Pins 27, 28, 29, and 30 of the MC33926
Terminal 1 of this terminal connector is labeled “OUT1”
Terminal 2 of this terminal connector is labeled “GND”
Terminal 3 of this terminal connector is labeled “OUT2”
Evaluation Board Hardware Description
Volt Terminal is marked “VBAT”.
11.7MC33810 Output Terminal Connector
The MC33810 Terminal Connector is an eight position screw terminal. Four of the terminals are
connected to the VPWR line and the remaining four terminals are connected to the four injector driver
outputs of the MC33810 (see data sheet).
These terminals are marked as follows:
Terminal 1 of this terminal connector is labeled “OUT0”
Terminal 2 of this terminal connector is labeled “VPWR”
Terminal 3 of this terminal connector is labeled “OUT1”
Terminal 4 of this terminal connector is labeled “VPWR”
Terminal 5 of this terminal connector is labeled “OUT2”
Terminal 6 of this terminal connector is labeled “VPWR”
Terminal 7 of this terminal connector is labeled “OUT3”
Terminal 8 of this terminal connector is labeled “VPWR”
The terminals are arranged in this alternating fashion to allow the connection of loads to pairs of screw
terminals.
11.8Controlling the MC33810 Outputs
The MC33810 Injector Driver Outputs OUT0 - OUT3 are controlled either by sending a “Driver ON/OFF
Command” SPI word or by toggling the Parallel, DIN0 - DIN3, input lines. In the MC33926 EVB the DIN0
- DIN3 lines are connected to the CNTL0 - CNTL3 parallel lines from the USB/SPI Dongle. Using SPIGen,
the CNTL0 - CNTL3 lines can be set high or low from the “Extra Pins” menu. To get to this menu, follow
Freescale Semiconductor11
KT33926UG, Rev. 2.0
Page 12
Evaluation Board Hardware Description
the setup procedure listed below and then click on the “Extra Pins” button while in the SPIGen “Send One
Command at Time” screen. Clicking on the Control 0 - 3, High and Low, buttons will toggle the DIN0 DIN3 lines, respectively causing the corresponding OUT0 - OUT3 outputs to toggle.
A High will turn on the output and a Low will turn it off.
11.9Accessory Boards
This kit may be used with Freescale's one of the following kits:
The KITUSBSPIDGLEVME Evaluation board (shown below) provides a USB to SPI interface that
features the MC68HC908JW32 with dongle. It is a working hardware/software example that allows a user
to become familiar with the MC68HC908JW32 microcontroller by means of an actual useful application,
a USB to SPI and USB to parallel converter. The main function provided by this kit is to allow a PC, that
may not have a parallel port, to communicate with other Freescale Evaluation Kits, via a USB port. The
USB port is a standard feature on almost every new PC. This kit makes use of the MC68HC908JW32’s
built-in USB, SPI and parallel ports.
431U1 5.0 A Throttle Control H-Bridge ICMC33926PNB32-PIN PQFN
451U2 Automotive Engine Control ICMCZ33810EK32 SOICW-EP
451U9 IRF7341 IRF7341TRANSIS-
TOR-FET_SO-8
461U10 IRF7341 IRF7341TRANSIS-
TOR-FET_SO-8
LEDs
471VDD_LED Green Low current LED 0603LNJ308G8LRACHIP-LED0603
Freescale Semiconductor21
KT33926UG, Rev. 2.0
Page 22
Bill of Material
ItemQtyS c h e m a t i c L a b e l Value
481VPWR_LED Green Low current LED 0603LNJ308G8LRACHIP-LED0603
491SF_LED Red Low current LED 0603LNJ208R8ARACHIP-LED0603
501OUTPUT_LED Red/Green LED LT1ED67A1.6X1.6
Screw Terminals
531LS_DRIVER_OUTPUTSConn Term Block 2 Pos 5mm1729018AK500/8
541H_BRIDGE_OUTPUTS Conn Term Block 3 Pos 5mm1729021AK500/3
551VBAT Conn Term Block 2 Pos 5mm1729018AK500/2
Description/Part
Number
Package
Freescale does not assume liability, endorse, or warrant components from external manufacturers that are
referenced in circuit drawings or tables. While Freescale offers component recommendations in this
configuration, it is the customer’s responsibility to validate their application.
22Freescale Semiconductor
KT33926UG, Rev. 2.0
Page 23
15References
The following table contains URLs where you can obtain information on other Freescale products: