Click here to ask an associate for production status of specific part numbers. Evaluates: MAX25222/MAX25222C MAX25222 Evaluation Kit/ MAX25222 Evaluation System General Description Quick Start The MAX25222 evaluation kit (EV kit) is a fully assem- Required Equipment bled and tested surface-mount PCB used to evaluate MAX25222 EV kit MAX25222/MAX25222C automotive 4-channel TFT-LCD 2.65 to 5.5V, 3A power supply power supply with VCOM Buffer. Each output rail (AVDD, NAVDD, VGON, VGOFF, and VCOM) can be indepen- Voltmeter 2 dently adjusted through I C. The EV kit demonstrates MINIQUSB+ interface board with USB cable the devices features: adjustable output voltage, fault User-supplied Windows-compatible PC with a spare protection, VCOM temperature compensation, nonvolatile USB port memory programming, and extensive diagnostics to aid in fulfilling ASIL-B safety level. Note: In the following sections, software-related items are identified by bolding. Text in bold refers to items directly 2 The EV kit exposes an I C interface which can operate in from the EV kit software. Text in bold and underlined conjunction with the MINIQUSB+ adapter or a third party refers to items from the Windows operating system. 2 I C master like a general-purpose microcontroller. The EV kit also includes Windows -compatible software that Procedure provides a simple graphical user interface (GUI) for exer- The EV kit is fully assembled and tested. Use the follow- cising the features of the IC. The EV system includes both ing steps to verify board operations: the EV kit and the MINIQUSB+ adapter board. Stand Alone Features Verify that shunts are installed across pins 1-2 2.65V to 5.5V Input Range on jumpers J1J4. Ensure that J5 has no jumper Default Output Voltages installed. 6.8V Output at 200mA (Boost Converter) Connect the positive terminal of the power supply to -6.8V Output at -200mA (Inverting Regulator) the TFT POWER IN pad and the negative terminal 12V Output at 15mA (Positive-Charge Pump to the GND1 PCB pad. Regulator) Set the power supply TFT POWER IN at 5V. -10V Output at 15mA (Negative-Charge Pump Turn on the power supply. Regulator) -2.49V Output at 100mA (VCOM Buffer) Verify that the green LED (DS1) is on. The EV kit components will fit the 2.1MHz frequency. Verify that the boost converter (AVDD PCB pad) For using 420kHz, HW changes are needed. is 6.8V. Spread Spectrum Verify that the inverting converter (NAVDD PCB pad) is -6.8V. Dedicated GUI Verify that the positive-gate voltage regulator Full Sequencing Flexibility (VGON PCB pad) is +12V. Proven PCB Layout Verify that the negative-gate voltage regulator Fully Assembled and Tested (VGOFF PCB pad) is -10V. Verify that the VCOM buffer (VCOM PCB pad) MAX25222 EV Kit Files regulator is -2.49V. FILE DESCRIPTION MAX25222GUISetupVxx.exe Windows GUI Installer Ordering Information appears at end of data sheet. Windows is a registered trademark of Microsoft Corporation. 319-100569 Rev 1 8/21 2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. One Analog Way, Wilmington, MA 01887 U.S.A. Tel: 781.329.4700 2021 Analog Devices, Inc. All rights reserved.MAX25222 Evaluation Kit/ Evaluates: MAX25222/MAX25222C MAX25222 Evaluation System 2 Launch the EV kit software application. I C Mode Visit www.maximintegrated/evkitsoftware down- From the EV kit software toolbar, select Device load the latest version of the EV kit software, Scan for Address Verify the ENABLE PIN in the 2 MAX25222GUISetupVxx.exe. GUI is enabled. The GUI scans the I C bus for avail- able slave addresses on the bus and selects the first Install the EV kit software (GUI) on your PC by run- 2 one (in this case, the MAX25222 I C address with ning the MAX25222GUISetupVxx.exe program. J5 settings: 42H). Press OK once the MAX25222/ The EV kit software application installs together with 2 MAX25222C I C address has been found. Figure 1, the required MINIQUSB+ drivers. is a screen capture of MAX25222 evaluation kit Verify that shunts are installed across pins 1-2 on software (GUI). jumpers J1-J3, J7, J9-J11, J17. Verify that the status bar in the bottom-right corner of Verify that shunts are installed across pins 2-3 on the GUI displays EV Kit: Connected. jumper J12, J5. In the GENERAL SETTING group box, press the Connect the MINIQUSB+ interface boards P3 START button. header to the J14 header on the EV kit. In the INDICATORS group box, SEQ ON status is Connect the positive terminal of the power supply to green. the TFT POWER IN pad and the negative terminal All channels are turned on outputting AVDD 6.8V, to the GND1 PCB pad. NAVDD -6.8V, VGON 12V, VGOFF -10V, VCOM Set the power supply VIN at 5V. -2.49V. Turn on the power supply. For more details on how to use the GUI and all the features available, click on the GUI Help menu item. Verify that the green LED (DS1) is on. Figure 1. MAX25222 Evaluation Kit Software (GUI) Analog Devices 2 www.analog.com