EVKT-8867

User Guide MP8867 Evaluation Kit (EVKT-8867) USER GUIDE – MP8867 EVALUATION KIT (EVKT-8867) Table of Contents Overview ................................................................................................................................................ 3 Section 1. Hardware Specifications ........................................................................................................ 5 1.1 Personal Computer Requirements .............................................................................................. 5 1.2 EV8867-LE-00A Specifications ................................................................................................... 5 1.3 EVKT-USBI2C-02 Specifications ................................................................................................ 5 Section 2. Software Requirements ......................................................................................................... 6 2.1 Software Installation Procedure .................................................................................................. 6 Section 3. Evaluation Kit Test Set-Up ..................................................................................................... 7 3.1 Hardware Set-Up ........................................................................................................................ 7 3.2 Powering Up the EVB ................................................................................................................. 7 3.3 Software Set-Up ......................................................................................................................... 7 3.4 Troubleshooting Tips ............................................................................................................... 10 Section 4. Ordering Information............................................................................................................ 11 MonolithicPower.com MP8867 Evaluation Kit User Guide Rev 1.1 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 7/17/2018 © 2018 MPS. All Rights Reserved. 2 USER GUIDE – MP8867 EVALUATION KIT (EVKT-8867) Overview Introduction The EVKT-8867 is an evaluation kit for the MP8867. The MP8867 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. The MP8867 achieves 8A of output current with excellent load and line regulation over a wide input supply range. This kit allows for quick evaluation of the MP8867. By using the I2C, users can set the output voltage, slew rate, switching frequency, and work mode. Kit Contents EVKT-88647 kit contents (items below can be ordered separately): # Part Number Item Quantity 1 EV8867-LE-00A MP8867GLE evaluation board 1 2 EVKT-USBI2C-02 Includes one USB to I2C communication interface, one USB cable, and one ribbon cable 1 Ribbon Cable Figure 1: EVKT-8867 Evaluation Kit Set-Up MonolithicPower.com MP8867 Evaluation Kit User Guide Rev 1.1 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 7/17/2018 © 2018 MPS. All Rights Reserved. 3 USER GUIDE – MP8867 EVALUATION KIT (EVKT-8867) Features and Benefits The MP8867 is highly customizable. Users can program the MP8867 via the MPS I2C GUI. ⚠️ All changes made in I2C mode will NOT be retained once the EVB is powered down. Adjustable features: I2C • • • • • • Adjustable output voltage Selectable slew rate Selectable switching frequency Selectable PFM mode System enable (EN bit) Status indication: OC, OTEW, OT, PG • Kit Specifications Features Supply for Board Operating Input Voltage Output Voltage (VOUT) Output Current (IOUT) Operating Systems Supported System Requirements GUI Software EVB Size (LxW) Specification 4.5V to 17V 4.5V to 17V 1V 8A Windows XP, 7, or later Minimum 22.2MB free 2 register controls: VSEL, System1 8.5cmx8.5cm MonolithicPower.com MP8867 Evaluation Kit User Guide Rev 1.1 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 7/17/2018 © 2018 MPS. All Rights Reserved. 4 USER GUIDE – MP8867 EVALUATION KIT (EVKT-8867) Section 1. Hardware Specifications 1.1 Personal Computer Requirements The following must be met to use the EVKT-8867: • Operating system of Windows XP, 7, or later • Net framework 4.0 • PC with a minimum of one available USB port • At least 22.2MB of free space 1.2 EV8867-LE-00A Specifications The EV8867-LE-00A is an evaluation board for the MP8867GLE. For more information, refer to the EV8867-LE-00A datasheet. Feature Specification Supply for Board 4.5V to 17V Operating Input Voltage 4.5V to 17V Output Voltage (VOUT) 1V Output Current (IOUT) 8A EVB Size (LxW) 8.5cmx8.5cm Figure 2: EV8867-LE-00A Evaluation Board 1.3 EVKT-USBI2C-02 Specifications The EVKT-USBI2C-02 communication interface connects the EVB, the PC, and its supporting accessories. It provides I2C and PMBus capabilities. Together with the MPS 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 MonolithicPower.com MP8867 Evaluation Kit User Guide Rev 1.1 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 7/17/2018 © 2018 MPS. All Rights Reserved. 5 USER GUIDE – MP8867 EVALUATION KIT (EVKT-8867) Section 2. Software Requirements 2.1 Software Installation Procedure Programming occurs through the MPS I2C GUI. Follow the instructions below to download and install the software: Note: This software can be downloaded directly from the MPS website. 1. Visit the MP88xx I2C GUI page at https://www.monolithicpower.com/en/i2c-tool.html. 2. Click the “Download” button in the upper right-hand corner. 3. Once the download has completed, 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.” 4. Follow the prompts in the set-up guide. 5. Wait for the status screen to verify that installation is complete (see Figure 5). 2 Figure 4: MPS I C GUI Set-Up Guide 2 Figure 5: MPS I C GUI Set-Up Success MonolithicPower.com MP8867 Evaluation Kit User Guide Rev 1.1 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 7/17/2018 © 2018 MPS. All Rights Reserved. 6 USER GUIDE – MP8867 EVALUATION KIT (EVKT-8867) Section 3. Evaluation Kit Test Set-Up 3.1 Hardware Set-Up The hardware must be configured properly prior to use. Use the USB cable to connect the EVKTUSBI2C-02 communication interface to the PC, and 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). If needed, refer to the datasheet for further clarification. 2 Figure 6: EVB to MPS I C Communication Interface Wire Connection 3.2 Powering Up the EVB 1. Connect the positive and negative terminals of the load to the VOUT and GND pins, respectively. 2. Preset the power supply output between 4.5V to 17V, then turn off the power supply. 3. Connect the positive and negative terminals of the power supply output to the VIN and GND pins, respectively. 4. Turn the power supply on. The MP8867 will enter the power-on sequence automatically. 3.3 Software Set-Up After connecting the hardware according to the above steps, follow the steps below to use the GUI software: 1. Start the software. It will automatically check the EVB connection. • If the connection is successful, the address will be listed in the “Slave Address” (see Figure 7). MonolithicPower.com MP8867 Evaluation Kit User Guide Rev 1.1 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 7/17/2018 © 2018 MPS. All Rights Reserved. 7 USER GUIDE – MP8867 EVALUATION KIT (EVKT-8867) Figure 7: Appearance of Address Indicates Successful Connection • If not, a warning will appear at the bottom. There are two warnings users can expect (see Figure 8). Each warning means there is an invalid connection. 1) “EVB is Disconnected” means that the evaluation board is not connected. 2) “Communication Board is Disconnected” means that the USB I2C communication interface is not connected. Invalid Slave Address Communication Board is Disconnected EVB is disconnected Figure 8: Warning Indicates Unsuccessful Connection MonolithicPower.com MP8867 Evaluation Kit User Guide Rev 1.1 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 7/17/2018 © 2018 MPS. All Rights Reserved. 8 USER GUIDE – MP8867 EVALUATION KIT (EVKT-8867) 2. If the connection is successful, proceed to Step 3. Otherwise, check connections between the EVB, communication interface, and PC. Re-plug the USB into the computer and restart the GUI. 3. Click the “Part Select” button to select the MP8867 (see Figure 7). The default GUI window is for the MP8861. The Register Control menu will appear on the left side. I2C register values will be read and displayed on the right side after clicking the “Read” button (see Figure 9). Figure 9: Values from I2C Shown in Table 4. Find the item you want to change, and select the desired value from the drop-down menu. 5. Click the “Read All” button to update values. The changed information of the item will appear on the right side (see Figure 10). Figure 10: Refer to Datasheet to Translate 0s and 1s ⚠️ All changes made via the I2C will be restored to default values once the EVB is powered down. MonolithicPower.com MP8867 Evaluation Kit User Guide Rev 1.1 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 7/17/2018 © 2018 MPS. All Rights Reserved. 9 USER GUIDE – MP8867 EVALUATION KIT (EVKT-8867) 3.4 Troubleshooting Tips Note: USBI2C-02 and USBI2C-01 drivers are not compatible. USBI2C-02 uses USBXpress and USBI2C01 uses Cyusb3. USBI2C-02 is the recommended device for 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 11). 2. Click “Browse My Computer for Driver Software,” find the downloaded driver, and install. EVKT-USBI2C-02 If the USBI2C-02 driver is not properly installed, manual installation is required. Follow the steps below: Figure 11: Updating the Driver Software Note: Check the driver version. Find “USBXpress Device” in the Device Manager under USB controllers. Right-click and view properties. Check to make sure the driver version matches the newest version (see Figure 12). 1. Install the correct USBXpress “.exe” file. Choose either the 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. • No Supply The MP8867’s input pin has an under-voltage lockout (UVLO) detection circuit. If the input voltage (AVIN) is lower than the UVLO rising threshold, the MP8867’s functions are disabled. Figure 12: Correct Driver Version • Shutdown Event If the MP8867 detects that the input voltage is lower than the UVLO falling threshold (enter no supply state) or over-temperature protection is triggered (enter power-off state), the MP8867 switches to no supply state or power-off state, regardless of the current state. • Thermal Recovery If the MP8867 is in a power-off state due to the die temperature exceeding the thermal protection threshold, the MP8867 enters the power-on sequence once the die’s temperature decreases. • Shutdown Sequence When the input voltage is lower than the UVLO falling threshold or the IC is over-temperature, the MP8867 immediately begins the shutdown sequence. MonolithicPower.com MP8867 Evaluation Kit User Guide Rev 1.1 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 7/17/2018 © 2018 MPS. All Rights Reserved. 10 USER GUIDE – MP8867 EVALUATION KIT (EVKT-8867) Section 4. Ordering Information The components of the evaluation kit can be purchased separately, depending on user needs. Part Number Description EVKT-8867 Complete evaluation kit Contents of EVKT-8867 EV8867-LE-00A EVKT-USBI2C-02 MP8867GLE evaluation board Includes one USB to I2C communication interface, one USB cable, and one ribbon cable Order directly from MonolithicPower.com. MonolithicPower.com MP8867 Evaluation Kit User Guide Rev 1.1 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 7/17/2018 © 2018 MPS. All Rights Reserved. 11