Click here for production status of specific part numbers. Evaluates: MAX77813 MAX77813 Evaluation Kit General Description Benefits and Features This evaluation kit (EV kit) provides a proven design to Proven PCB Reference Design and Layout evaluate the MAX77813, a 2A buck-boost converter. Fully Assembled and Tested Input voltage range is between 2.3V and 5.5V and output Accessible Test Points for EN, POK, and ILIM voltage range is from 2.6V to 5.14V. The factory default output voltage of this EV kit is set at 3.3V. Output voltage MINIQUSB Interface Board and User-Friendly GUI for Full Control can be adjusted through the MINIQUSB interface board. The board enables communication with Windows - Ordering Information appears at end of data sheet. 2 compatible software to emulate an I C interface. MAX77813 SOLUTION OUTPUT INPUT SENSE PINS SENSE PINS Figure 1. MAX77813 Evaluation Board Figure 2. MINIQUSB Board Windows is a registered trademark and registered service mark of Microsoft Corporation. 319-100292 Rev 0 12/18Evaluates: MAX77813 MAX77813 Evaluation Kit 4) Connect the EV kit to the power supply and meters. Quick Start Adjust the ammeters to their largest current range Follow this procedure to familiarize yourself with the EV kit. to minimize their series impedance. Do not allow Note: In the following sections, software-related items are the ammeters to operate in their auto-range mode. identified by bolding. Text in bold refers to items directly If current readings are not desired, short across the from the EV kit software. Text in bold and underlined ammeters. refers to items from the Windows operating system. 5) Turn on the power supply. 6) Switch JU2 to VIO (1-2) to enable the MAX77813. Required Equipment 7) Apply load for desired test. MAX77813 EV kit If reading the register (e.g., reading status register) or MINIQUSB command module (optional, USB cable writing to the register (e.g., programming specific output included) voltage) is required, then: Adjustable DC power supply 8) Visit www.maximintegrated.com/products/ MAX77813 under the Design Resources to A 1.8V DC power supply (optional) download the latest version of the EV kit software, Digital multimeters MAX77813Rxx.ZIP. Save the EV kit software to a temporary folder and unpack the ZIP file. Procedure 9) Install the EV kit software on your computer by The EV kit is fully assembled and tested. Follow the steps running the INSTALL.EXE program inside the below to verify board operation. Use twisted wires of temporary folder. The program files are copied, and appropriate gauge (20AWG) that are as short as possible icons are created in the Windows Start Programs to connect the load and power sources. menu. 1) Ensure that the EV kit has the correct jumper 10) Connect the USB cable from the PC to the settings, as shown in Table 1. MINIQUSB board. 2 2) Connect the MINIQUSB interface board (if I C 11) Start the EV kit software by opening its icon in the control is required to test). Start Programs menu. The EV kit software main 3) Preset the DC power supply to 3.8V. Turn off the window appears, as shown in Figure 3. power supply. Do not turn on the power supply until 12) The EV kit is now ready for testing. all connections are completed. Table 1. Jumper Settings NODE OR SHUNT JUMPER FUCNTION FUNCTION POSITION 1-2* VIO is supplied from an onboard 1.8V LDO (U1) JU1 VIO 2-3 VIO is supplied from MINIQUSB board 1-2 Connecting EN to VIO (MAX77813 is enabled) JU2 EN 2-3* Connecting EN to GND (MAX77813 is disabled) 1-2 Connecting ILIM to VIO, inductor current is limited by high current limit level JU3 ILIM 2-3* Connecting ILIM to VIO, inductor current is limited by low current limit level OPEN Disconnect onboard LDO input JU4 Input for Onboard LDO 1-2* Inboard LDO is supplied from VIN OPEN* No pull-up for SDA JU5 SDA Pull Up 1-2 SDA pin is pulled up to VIO through 2.2k OPEN* No pull-up for SCL JU6 SCL Pull Up 1-2 SCL pin is pulled up to VIO through 2.2k *Default position. Maxim Integrated 2 www.maximintegrated.com