Getting Started with the KITFS26AEEVM Evaluation Board

2.1 Board Features

• VPRE: synchronous buck converter with integrated FETs
  • Configurable output voltage and switching frequency
  • Output DC current capability up to 1.5 A
  • PFM mode for Low Power Standby mode operation
• VCORE: synchronous buck converter with integrated FETst
  • VCORE is dedicated for microcontroller core supply
  • Output DC current up to 0.8 A or 1.65 A (depending on part number)Dummy Text
  • Output voltage range setting from 0.8 V to 3.35 V
• VBST: asynchronous boost controller with external low-side switch, diode, and current sense resistorText
  • VBST is configurable as front-end supply to withstand low-voltage cranking profiles or in back-end supply with configurable output voltage and scalable output DC current capability
• LDO1: LDO regulator for microcontroller I/O support with selectable output voltage between 3.3 V and 5.0 V and up to 400 mA current capability
• LDO2: LDO regulator for system peripheral support with selectable output voltage between 3.3 V and 5.0 V and up to 400 mA current capability
• VREF: High-precision reference voltage with 0.75 % accuracy for external ADC reference and internal tracking reference
• TRK1and TRK2: Voltage tracking regulators with selectable output voltage between VREF, LDO2, or internal LDO reference. Supports high-voltage protection for ECU off board operation. Each tracker has a current capability up to 150 mA

2.2 Board Description

The FS26 family can be evaluated with this board as it is populated with a superset part. The FS26xx part soldered on the board can be fused one time or it is possible to test as many configurations as needed in Emulation mode.

This board was designed to sustain up to 2.0 A total on VPRE. Layout is done using six layer PCB stack up. Set initial current limitation of 1 A.

2.3 Board Components

Figure 1. Overview of the KITFS26AEEVM evaluation board

1. VBAT Phoenix connector
2. VBAT3 position switch
3. VBAT Jack connector
4. VDDIO selection
5. Regulators outputs
6. WAKE1 and WAKE2 inputs switches
7. FS26 SBC
8. KL25Z FRDM headers (bottom)
9. VDEBUG pin source selection (switch or MCU)
10. VDEBUG pin voltage level switches
11. VDDIO USB voltage level selection
12. VMONEXT variable resistor
13. Signal connector
14. Program connector
15. Regulators output LED indicators
16. Program burning voltage LED indicator
17. Safety output LED indicators
18. Debug mode LED Indicator

The programming/evaluation boards are always delivered with the GUI firmware already flashed. If the MCU firmware is already flashed, this section can be ignored. If it is specified that the firmware must be updated, or if it is malfunctioning, follow these instructions.

3.1 Flashing or Updating the GUI Firmware

The KITFS26AEEVM is delivered with the GUI firmware flashed. If MCU firmware is flashed, ignore this section. If it is specified to update the firmware or it is malfunctioning, follow the instructions below.

3.2 Flashing FRDM Board Firmware for Windows 7/10

If BOOTLOADER is already loaded in the FRDM Board, steps 1 to 3 are not required. Start from step 4.

1. Disable the Storage Service and Windows Search: Run Services, double click, and stop them as shown below
   Steps 2 and 3 are not required if BOOTLOADER is already loaded in the FRDM board
2. Press the RST push-button 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
3. Drag and drop the file “MSD-DEBUG-FRDM-KL25Z_Pemicro_v118.SDA” to the BOOTLOADER drive.
   

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

4. Disconnect and reconnect the USB cable into the SDA port
   This time without pressing the RST push-button, FRDM_KL25Z device should appear on the left pane of the File explorer as pictured below
   
5. Locate the file “nxp-gui-fw-frdmkl25z-usb_hid-fs2630_vX.Y.bin” from the package and drag and drop the file into the FRDM_KL25Z device
   

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

6. FRDM board Firmware is successfully loaded. Disconnect and reconnect the USB cable into the KL25Z USB port

3.3 Installing GUI Software Package

To install the FS26 NXP GUI, download or obtain the NXP GUI package, unzip 1- NXP_GUI_Setup folder:

Then, double-click NXP_GUI_version-Setup.exe and follow the instructions.

To install the application on Windows PC, proceed with the following pop-up windows:

Figure 1. Application Setup

Figure 2. License Agreement

Figure 3. Select FS2630_GUI

Figure 4. Choose the folder to install

Select the following options before completing the installation of the setup:

• Run NXP_GUI
• Show Readme

Select Finish to complete the installation.

When the installation is finished, you can find the application by searching for NXPGUI in the windows search bar. Click to launch.

4.1 Configure the Hardware

GS-KITFS26AEEVM-IMG11

GS-KITFS26AEEVM-IMG11

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

1. With SW1 in middle position, set DC power supply to 12 V and current limit to 1.0 A. Attach the DC power supply positive and negative output to KITFS26AEEVM VBAT Phoenix connector (J20). Or connect 12 V power supply to VBAT Jack (J21).

   Table 1. VBAT Phoenix connector (J20)

   Schematic label	Signal name	Description
   J20-1	VBAT	Battery voltage supply input
   J20-2	GND	Ground

   Table 2. VBAT three position connector (SW1)

   Schematic label	Signal name	Description
   SW1 pin 2-3	VBAT Phoenix	Board supplied by Phoenix connector
   SW1 pin 2 (middle position)	VBAT	Board not supplied
   SW1 pin 2-1	VBAT jack	Board supplied by Jack connector

2. Connect the Windows PC USB port to the KL25Z USB side of the FRDM board included in the kit, using the provided USB 2.0 cable.
3. Turn on SW6 to apply V_DBG to the DEBUG pin or SW7 to apply V_OTP
4. Turn on the power supply
5. Close SW1

Note: At this step, the product is either in Debug mode, and all regulators are turned off, or in OTP emulation mode. In the latter, the user can then power up with a preloaded OTP configuration or manually configure the mirror registers before powering up (the power up is effective as soon as SW7 is turned off).