EV2155-Q-00A High-Efficiency, Single-Inductor, DC/DC Buck-Boost Converter Evaluation Board The Future of Analog IC Technology DESCRIPTION FEATURES The EV2155-Q-00A is an evaluation board 2V to 5.5V Input Voltage (V ) Range IN designed to demonstrate the capabilities of the 1.5V to 5V Adjustable Output Voltage (V ) OUT MP2155, a highly efficient, low quiescent Up to 95% Efficiency current (I ), buck-boost converter. It can Q Load Disconnect During Shutdown operate from an input voltage (V ) above, IN 1MHz Switching Frequency (f ) SW below, or equal to its output voltage (V ). The OUT Pulse-Skip Mode (PSM) during Light-Load device is ideal for products powered by a Operations single-cell lithium-ion or multi-cell alkaline Low 80A Quiescent Current (I ) Q battery where the ICs V is within the battery OUT Internal Loop Compensation for Fast voltage range. Transient Response The device operates from a 2V to 5.5V V IN Internal Soft Start (SS) range, and has an adjustable 1.5V to 5V V . OUT Short-Circuit Protection (SCP) with Hiccup Mode The MP2155 and is available in a QFN-10 Over-Temperature Protection (OTP) (3mmx3mm) package. Available in a QFN-10 (3mmx3mm) ELECTRICAL SPECIFICATIONS Package Optimized Performance with Parameter Symbol Value Units MPS Inductor MPL-AL6050 Series Supply voltage VIN 2 to 5.5 V Output voltage V 3.3 OUT V APPLICATIONS Output current IOUT 0 to OCP A Point-of-Sale (POS) Systems Portable Instruments Wireless Handheld Devices Personal Digital Assistants (PDAs) MP3 Players All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. EV2155-Q-00A EVALUATION BOARD Board Number MPS IC Number MPS Inductor EV2155-Q-00A MP2155GQ MPL-AL6050-3R3 EV2155-Q-00A Rev. 1.1 MonolithicPower.com 1 6/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved. EV2155-Q-00A HIGH-EFFICIENCY, 1-INDUCTOR, BUCK-BOOST CONVERTER EVAL BOARD QUICK START GUIDE 1. Preset the load to the desired value (e.g. 0.5A). Note that if the board starts up with a heavy load due to the secondary current limit for inrush protection, then the MP2155 may enter short-circuit protection (SCP) hiccup mode during or after start-up. 2. Connect the load terminals to: a. Positive (+): VOUT b. Negative (-): GND 3. Preset the power supply between 2V and 5.5V. 4. Turn off the power supply. 5. Connect the power supply terminals to: a. Positive (+): VIN b. Negative (-): GND 6. Turn on the power supply. The board should start up automatically. 7. To use the enable (EN) function, disconnect the jumper (JP1) from the EN pin and apply a digital input to EN. Pull EN above 1.2V to turn the converter on pull EN below 0.4V to turn it off. 8. To use the MODE pin to enable pulse-skip mode (PSM), turn off the input power and connect the jumper (JP2) to GND. 9. If a different output voltage (V ) is required, V can be set by the resistors (R1 and R2). Set R1 OUT OUT between 100k and 180k , and V between 1.5V to 5V. Then R2 can be calculated with OUT Equation (1): V FB (1) R2R1 VV OUT FB Where V is the feedback voltage (typically 0.496V). FB EV2155-Q-00A Rev. 1.1 MonolithicPower.com 2 6/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved.