Getting Started with the KITPF502XSKTEVM

2.1 Board Description

The KITPF502XSKTEVM evaluation board is the complete evaluation kit of the PF502x family of power management ICs from NXP Semiconductors. This user guide describes the functionality of the evaluation board, explains how to use the PMIC device in an application environment and gives details about the hardware and software required.

2.2 Board Features

• SWx in single-phase mode (default) or multiphase mode up to 3.5 A peak each
• LDO1 from 1.5 V to 5.0 V, up to 400 mA
• PWRON switch for global wake-up or enable
• Individual enable control switch for each regulator
• LEDs to indicate individual PGOODx and global PGOOD status
• USB interface through FRDM-KL25Z for register access, TBB mode and OTP programming
• Multiple signal connectors for easy access
• Terminal blocks and test point for all the regulators for easy testing and evaluation

2.3 Board Components

Overview of the KITPF502XSKTEVM evaluation board

1. PF502x PMIC
2. VIN connector
3. PWRON control switch and jumper
4. Enable switches for the regulators
5. Feedback jumpers for the buck regulators
6. FRDM-KL25Z connectors (for SW/GUI interface) – on the bottom side of the board
7. Jumpers for IO control (TBBEN, VDDOTP, STANDBY, WDI, VDDIO)
8. Load terminal for the buck outputs
9. Load / test point for LDO1 output
10. Connector for efficiency measurement
11. Connector for leader/follower (multi-PMIC) connection
12. Connector for signals and power measurement
13. Connectors for IO measurement
14. Feedback test points of buck regulators to measure loop stability

2.4 Additional Board Support

Refer to UM11377, KITPF502XSKTEVM evaluation board user manual for additional details on the featured components.

To configure the hardware and workstation, complete the following procedure:

1. With the USB cable connected to the PC and the USB port in the FRDM board, apply VIN to the evaluation board.
   1. Provide external VIN between 2.5 V to 5.5 V on J10 (VIN) and J4 (GND). Make sure that the supply is current limited to 100 mA
2. Press 'Reset' on the FRDM board, to ensure that board is properly recognized.
3. If the NXPGUI application was not installed before, perform step 6 of Section 4.2 "FRDM board BOOTLOADER refresh in a Windows 7 or 10 system (optional - only when the FRDM board is not preprogrammed)" to install it for the first time. Open the NXPGUI application from the installation folder or from the Start menu
4. A configuration window is displayed. Select one of the devices to load the predefined configurations, and then click 'OK'

5. The NXPGUI interface should open and load the main framework. Make sure to confirm if the GUI can identify the USB device properly. This is displayed by the active 'Start' button on the top-left corner of the GUI

NOTE:The USB cable should be connected for the GUI to recognize and be able to connect to the device.

6. Click 'Start' to enable the connection to the device. The device status can be read from the bottom-left corner of the GUI

7. Once the device is connected, the system is ready for Hardwire, TBB or OTP operation as desired

3.1 Additional Board Support

Refer to UM11377, KITPF502XSKTEVM evaluation board user manual for additional details on the hardware configuration.

4.1 Installing and Configuring Software and Tools

Download and unzip the NXP_GUI_PR_1.0 file into any desired location. The package should contain a GUI folder and MCU folder.

4.2 FRDM Board BOOTLOADER Refresh in a Windows 7 or 10 System (optional only when the FRDM board is not preprogrammed)

1. Press the RST push button on the FRDM board and connect the USB cable into the SDA port on the FRDM board. A new BOOTLOADER device should appear on the left pane of the File explorer.

2. Drag and drop the file 'MSD-DEBUG-FRDM-KL25Z_Pemicro_v118.SDA' from the 'MCU folder' into the BOOTLOADER drive

   Note: Make sure to allow enough time for the firmware to be saved in the Bootloader.

3. Disconnect and reconnect the USB cable into the SDA port (this time without pressing the RST push button). The PC installs a new device called 'FRDM_KL25Z'
4. Locate the file 'nxp-gui-fw-frdmkl25z-usb_hid-pf502x_v0.1.6.bin' from the 'MCU folder' and drag and drop the file into the FRDM_KL25Z device
5. FRDM board firmware is successfully loaded
6. Open and run the 'NXP_GUI-1.0-Setup.exe' file from the GUI folder inside the unzipped package. This installs the NXPGUI software in the system. Install it in a local destination folder

4.3 Additional Board Support

Refer to UM11377, KITPF502XSKTEVM evaluation board user manual for additional software details.

4.4 Ready to Use

Start embedded application development.