MAX20094/MAX20095 Evaluation Kits/ Evaluate: MAX20094/MAX20095 MAX20094/MAX20095 Evaluation Systems General Description Benefits and Features The MAX20094/MAX20095 evaluation kits (EV kits) Easy Testing of CC/CV Charger, SOH Functions, are fully assembled and tested application circuits for and Boost Controller the MAX20094/MAX20095 backup battery chargers and Free Downloadable EV Kit GUI 2 boost controllers with I C capability. The EV kits are set MINIQUSB for Simplified Control up to provide the user with a convenient method to assess 2 Jumpers and Pins for External I C Controller the constant-current/constant-voltage (CC/CV) battery charger, state-of-health (SOH) diagnostic features, and Optimized Application Layout for Quick the boost controller. Implementation Both EV kits are recommended for use with the free Both MAX20094 and MAX20095 EV Kits Can be 2 MAX20094 companion GUI and an I C interface board, such Used to Evaluate Either of the Pin-Compatible ICs as the Maxim Integrated command module (MINIQUSB). with Component Replacement of the U1 IC 2 The MINIQUSB enables I C communication through the Proven PCB Layout USB port of a PC by emulating a 2-wire interface. The EV Fully Assembled and Tested system includes both the EV kit and the MINIQUSB command module. Note: The EV kit can also be used as a stand-alone board without these items. The EV kit can also Ordering Information appears at end of data sheet. evaluate the pin-compatible MAX20095 with IC replace- ment of U1. MAX20094 EV Kit Photo Note: Photo shows the Maxim MINIQUSB board on left and the MAX20094 EV kit board on right. 319-100055 Rev 5 3/18MAX20094/MAX20095 Evaluation Kits/ Evaluate: MAX20094/MAX20095 MAX20094/MAX20095 Evaluation Systems 4) Verify that all jumpers are in their default positions, as Quick Start shown in Table 1. Required Equipment Procedure for CC/CV Charging MAX20094 or MAX20095 EV kit To quickly test the CC/CV battery-charging functionality, Latest version of the MINIQUSB command module power supplies and a variable power resistor are used firmware (optional, USB cable included) available from instead of actual batteries: www.maximintegrated.com/evkitsoftware 1) Preset the PS1 power supply to 14V, then disable the Latest version of the MAX20094 EV kit software, supply. Connect the positive and negative terminals available from www.maximintegrated.com/evkit- to the MBATT1 and the neighboring GND test pads, software respectively, and turn on the supply. Three adjustable DC power supplies (PS1, PS2, PS3) 2) Preset the PS2 power supply to 4V, then disable the Digital multimeter (DMM) supply. Connect the positive and negative terminals to the VSUP1 and the neighboring GND test pads, Power resistor, adjustable preferred (this can be omitted if power supply can sink current) respectively, and turn on the supply. 3) Preset the PS3 power supply to 3.2V, then disable Electronic load the supply. Note: In the following sections, software-related items are 4) Set a DMM to measure current. Connect the positive identified by bolding. Text in bold refers to items directly terminal of PS3 to the DMMs COM, and then connect from the EV kit software. Text in bold and underlined the positive side of the DMM to the BBAT+ test pad. refers to items from the Windows operating system. Close the current path by connecting the neighboring Procedure GND test pad to the supplys negative terminal and The EV kit is fully assembled and tested. Follow the steps turn on PS3. below to verify board operation: 5) Connect a 60 power resistor across PS3, and 1) Download the latest version of the EV kit software, optimize the value of the resistor to the charging and install to your PC using the .EXE setup file. current being tested. The supported operating systems are Windows 7, 6) Start the EV kit software on the PC and click the Windows 8, and Windows 10. splash screen to bring up the main window. 2) Connect the USB cable from the PC to the MINIQUSB 7) Check CHG EN in the GUI (Figure 1) to enable the board, and then plug it into JU1 on the EV kit. charger. 3) If the firmware on the MINIQUSB board is not 8) Verify that current through the DMM is approximately compatible with the GUI, the most recent version 50mA, from the board to the supply. should be downloaded and the board updated. Refer to the MINIQUSB Firmware Update instructions in the downloaded file for further information. Table 1. MAX20094/MAX20095 EV Kits Default Jumper Settings JUMPER DEFAULT SHUNT POSITION FUNCTION JU1 MINIQUSB socket JU2 JU3 Open Disables (shorts EN1B to VDDIO) JU4 Installed Shorts MINIQUSBs VDD to VDDIO JU5 Installed Shorts SDA to MINIQUSBs SDA JU6 Installed Shorts SCL to MINIQUSBs SCL JU7 Installed Connects STATUSB to VDDIO through 10k resistor Windows is a registered trademark and registered service mark of Microsoft Corporation. Maxim Integrated 2 www.maximintegrated.com