LV8414CSGEVK V1.0 Evaluation Kit User Guide 03/25/2016 1 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide NOTICE TO CUSTOMERS The LV8414CS Evaluation Kit is intended to be used for ENGINEERING DEVELOPMENT, DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by ON SEMICONDUCTOR to be a finished end product fit for general customer use. Information contained in this document regarding the device application and the like is provided only for your convenience. ON SEMICONDUCTOR MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. The user indemnifies ON SEMICONDUCTOR fully in respect of any claim made against ON SEMICONDUCTOR arising from the use of the LV8414CS Evaluation Kit V1.0. WARNING The LV8414CS Evaluation Kit is referenced to the DC supply ground and is not earthed. Hence, it carries a risk of electric shock. Caution is required when the power is applied to the kit. Only qualified technicians and/or engineers should handle the kit. When the power is applied to the kit, it is absolutely must that users only probe provided test points and do not touch any other point on the kit. 03/25/2016 2 Page 2 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide 1. Introduction The LV8414CSGEVK evaluation board (EVB) provides a quick and easy platform to evaluate the LV8414CS functionalities. Users need to connect an external power supply (2.5V – 5.5V) for evaluation. The kit consists of: 1. LV8414CS Evaluation Board : LV8414CSGEVK with on-board microcontroller circuit (Daughter board) 2. USB cable 3. Stepper motor (x2) *1 Daughter board LV8414CSEVK top view LV8414CSAGEVK bottom view MSCA020A55*1 (Winding Res: 15±1.5Ω) Nidec Sankyo Corporation USB cable Stepper motor x2 Figure 1: LV8414CS Evaluation Kit 03/25/2016 3 Page 3 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide *1: In case of using the stepper motor “MSCA020A55”. When you continuously energized the 200mA at 25°C ambient temperature, temperature of the motor windings will be 25 + 84.4 = 109.4°C. Because the guaranteed temperature of the motor windings is 115°C, upper limit of the allowable current is 200mA. In case of the other motor, please refer to the specification of it. Rise in Temperature (°C) Temperature-rise of the motor winging (MSCA020A55) Current-carrying Time (sec) Figure 2. Temperature-rise characteristic of the motor winding 2. Features The kit provides an integrated development platform to drive a bipolar stepper motor. Following are key features of the kit. LV8414CS Evaluation Board: LV8414CSGEVK • Daughter board for communication with the PC based Graphical User Interface. Graphical User Interface (GUI) • Enables users to set/modify LV8414CS parameters in real-time 03/25/2016 4 Page 4 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide 3. LV8414CS Evaluation Board (EVB) Overview The EVB consists of three connectors to connect two motors and a power supply, and a daughter board to control signal. (shown in Figure 3). Motor winding connectors The LV8414CS can drive one or two stepper motors. The following table shows the combination of the outputs and motors/motor-channels. Output A OUT1A OUT2A OUT3A OUT4A Output B OUT1B OUT2B OUT3B OUT4B Channel 1 2 3 4 Motor 1 2 Figure 3. Motor winding Connectors 03/25/2016 5 Page 5 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide DC power supply connector The LV8414CS requires external power supply for its operation. To drive two stepper motors, power must be supplied to both VM1 and VM2. Pin Name VM1, VM2 Min. [V] 2.5 Max. [V] 5.5 And, the power supply pins are separated as shown in the following table. Power supply pin VM1 VM2 Outputs OUT1A, OUT1B, OUT2A, OUT2B OUT3A, OUT3B, OUT4A, OUT4B - To supply the same voltage to VM1 and VM2, a single power supply must be connected to either VM1 or VM2 pin of the connector J3, while the pin 1 and pin 2 of the jumper J4 are shorted. (shown in Figure 4). Figure 4. Power Supply Connectors and Jumper J4 03/25/2016 6 Page 6 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide USB connector on the Daughter board The regulator on the Daughter board generates VCC=3.3V output from USB power. The logic block in LV8414CS and Daughter board are designed to operate at VCC. - When the external microcontroller is used, remove the Daughter board, and apply a power supply same as the external microcontroller to VCC. Figure 5: USB connector and VCC pin R1-8: RF Resistor The output current is determined by the RF Resistor and the current reference voltage based on the following equation. IOUT = VREF RRF Where, I OUT : Motor current V REF : Current reference voltage R RF : RF Resistor (Default setting value is 1Ω.) -V REF is set by the register with GUI. The GUI operation will be described below. 03/25/2016 7 Page 7 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide 4. Graphical User Interface (GUI) Installation An easy-to-use GUI is provided (free of cost) for real-time LV8414CS based solution development. Perform the following steps to get started with the GUI. This GUI will work with the Windows 7 (32bit, 64bit) and Windows 8 (32bit). (1) Unpack the zip file "M-DrAGON_version1134.zip", and confirm files as shown in below. “M-DrAGON_version1134.exe”, “M-DrAGON_driver.inf”, and “LV8414CSGEVK_USER_GUIDE-D.rev0.pdf”. (2) Connect the LV8414CSGEVK to the PC using the USB cable. Steps (3) to (11) show the USB driver installation procedure that refers to an expression on Windows 8 (32bit). This layout and procedure may vary with other operating system version. It is required only for the first time when the LV8414CSGEVK is connected to the USB port. (3) The Windows OS will try to install driver on its own. Wait for a few minutes. Installation will fail. (4) Click on the Start Menu, and open the Control Panel. (5) Open the Device Manager. (6) Either under “Ports (COM & LPT)” or “Other Devices”, you should see an open port named “USB-MiconI/ O Controller”. Figure 6: Device Manager 1 03/25/2016 8 Page 8 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide (7) Right click on the “USB-MiconI/ O Controller” port and choose the “Update Driver Software” option. －If the update driver software option is not available, then the Windows OS is still trying to install the driver on its own. Wait till the OS finishes self-try. (8) Next, choose the "Browse my computer for Driver software" option. (9) Finally, navigate to and select the driver file named “M-DrAGON_driver.inf”, located in the “M-DrAGON_driver” folder. And click “Next”. (10) Windows will finish up the driver installation from there. Figure 7: USB-MiconI/ O Controller 1 03/25/2016 9 Page 9 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide Note: When “Windows security” is shown, please select “Install this driver software anyway”. Figure 8: Windows Security (11) When the installation is successful, the final window is shown. And the recognized M-DrAGON I/O Controller port with the port number is shown in the Device Manager. Figure 9: USB-MiconI/ O Controller 2 03/25/2016 Figure 10: Device Manager 2 10 Page 10 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide (12) Start “M-DrAGON_version1134.exe”. Select “Lens” in Motor type. Since the Driver type is displayed device that can drive the stepper motor by selecting “Lens”, select “LV8414CS” from the drop-down list of Driver type, and then click “OK”. (Start up GUI) If the daughter board is not plugged, “USB Disconnected” is shown. Figure 11: Motor type and Driver setting window 1. Select “Lens” in “Motor” pull-down list. 2. Select “LV8414CS” in the “Driver” pull down list. -When the selected “Driver” is not displayed, please check whether it is suitable for that kind of evaluation board. 3. Click “OK” button. 03/25/2016 11 Page 11 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide 4. The following windows should appear. Figure 12: Controller window 03/25/2016 12 Page 12 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide 5. Usage of the GUI: (1) GUI field description of controller window 1-1 Figure 13: GUI field description of controller window 1-1 • Chip Enable / Disable “Enable”: IC will be enabled state. (The indicator changed to “Disable”.) “Disable”: IC will be disabled state. (The indicator changed to “Enable”.) • Photo Sensor Driving “ON”: Activate the photo diodeshunt driver (PI pin). (The indicator changed to “OFF”.) “OFF”: Deactivate it. The indicator changed to “ON”. • Exit “Exit”: End the program. 03/25/2016 13 Page 13 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide (2) GUI field description of controller window 1-2 The register setting group for channel 1 and 2: (The description for channel 3 and 4 is the same.) Figure 14: GUI field description of controller window 1-2 • Current Reference Voltage The current reference voltage can be selected from 0.05 to 0.20 (V) by slider. The output current is determined by the RF Resistor and the current reference voltage based on the following equation. IOUT = VREF RRF Where, I OUT : Motor current V REF : Current reference voltage R RF : RF Resistor (Default setting value is 1Ω.) 03/25/2016 14 Page 14 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide • Excitation Direction / FR1 Output: “CW” : clockwise rotation; “CCW”: counterclockwise rotation. This register setting is valid when FR1 is set “Low”. (The indicator changed to “High”.) This register setting is ignored when FR1 is set “High”, and the counterclockwise is selected. • Step Hold: “Clear”: the step position is advanced by the clock signal. “Hold”: hold the step position, the clock signal is ignored. • Counter reset: “Clear”: not reset “Reset”: make the output to go the initial state. • Output Enable: “Off” : the output is disabled . The output gets “high impedance” state. “On” : the output is enabled when the chip enable is set “Enable”. • CLK1 Frequency Division Ratio: The CLK1 frequency division ratio can be selected from “Undivide”, “1/2”, “1/4” and “1/8” by drop-down list. • Excitation Mode: The excitation mode can be selected from “Micro step (256 division)”, “Half Step”, “Half (full torque), “Full Step” by drop-down list. • CLK1 Frequency: The CLK1 frequency can be selected between “100Hz and 100kHz by slider. • Pulse Count The number of clock pulses can be selected from “0~32588” and “cont.” by slider. "cont." means a continuance pulse. • Set Freq / count, STOP When “Set Freq / count” button is clicked, the “CLK1” signals is outputted. Then the motor starts rotating. When “STOP” button is clicked, the “CLK1” signals stop, and the motor stop rotating. 03/25/2016 15 Page 15 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide (3) GUI field description of controller window 1-3 (The setting group of utility) Figure 15: GUI field description of controller window 1-3 • Chopping frequency The CLK1 frequency division ratio can be selected from “200”, “300”, “400” and “600”(kHz) by drop-down list. • MO Output Channel The stepping position monitor output pin MO is provided. Either “1/2ch” or “3/4ch” can be selected for it. • MO Output Position “initial Pos”: The MO output gets LOW at the initial position “Half Step Pos”: The MO output gets LOW at the initial position and 1-2 phase position • I2C Data Send The I2C data to be send can be selected from “All (00h-03h)”, “01h”, “02h”, and “03h” by radio buttons. When "Send" button is clicked, the I2C data is sent. * Slave Adrs "01110010" is fixed for LV8414CS. 03/25/2016 16 Page 16 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide (4) GUI field description of controller window 1-4 GUI field description of controller window Motor and Driver setting window Figure 16: GUI field description of controller window 1-4 Save parameter setting Save the parameter setting data of GUI. Select “File” in the menu bar at the top of GUI Controller window or Motor and Driver setting window, then select “Save parameter setting”. Export Speed graph data This function is not available. Rollback to Initial value When “Rollback to Initial value” is clicked, all parameters of the Controller window is returned to an initial value. Load parameter setting Load the file which is saved the setting data of GUI with “Save parameter setting”. Select “File” in the menu bar at the top of Motor and Driver setting window, then select “Load parameter setting”. 03/25/2016 17 Page 17 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide 6. Operation Following steps describe a typical operating procedure. It is assumed that the device driver has been already installed. Step 1. Connect LV8414CSGEVK to the PC using the USB cable. Step 2. Connect stepper motor and connect power supply (2.5V ~ 5.5V). CURRENT PROBE AMPLIFIER 1 Osclloscope CURRENT PROBE AMPLIFIER 2 Power supply A PROBE INPUT PROBE INPUT OUTPUT OUTPUT V - + CHANNEL 1 2 3 4 Stepper Motor 1 Stepper Motor 2 M M PC Figure 17: Setup for stepper motor Step 3. Run “M-DrAGON_version1134.exe”. Step 4. Turn-on the power supply. 03/25/2016 18 Page 18 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide Step 5. Set “Motor” type and “Driver” setting window as shown below figure. Figure 18: Motor type and Driver setting window Step 6. Set the GUI parameters as shown below figure. Figure 19: Setting parameter of GUI 03/25/2016 19 Page 19 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide Step 7. Click“Send” button. Step 8. Click “Set Freq / count” button and then the motor begins to rotate. • Monitor MO and CLK1 terminal voltages using ch1 and ch2 of the scope. Monitor OUT1 Aand OUT2A output current waveforms using ch3 and ch4. 50ms/div ch1 MO 5V/div Ch2 CLK1 5V/div ch3 OUT1A 100mA/div Ch4 OUT2A 100mA/div Figure 20: Waveforms for Stepper Motor Step 9. Click “Stop” button and then the motor stop. Step 10. Click “Disable” button. The indicator will changed to “Enable” 03/25/2016 20 Page 20 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide APPENDIX A. SCHEMATIC – LV8414CSGEVK 03/25/2016 21 Page 21 www.onsemi.com LV8414CSGEVK V1.0 Evaluation Kit User Guide APPENDIX B. BILL OF MATERIAL - LV8414CSGEVK 03/25/2016 22 Page 22 www.onsemi.com