RT4813GQUF

RT4813GQUF Evaluation Board your power partner. RT4813 High Efficiency Boost Converter Purpose The RT4813 is a Boost converter with the input voltage range from 1.8V to 5.5V and provide an average output current limit range from 0.55A to 3.1A. This document explains the function and use of the RT4813 evaluation board (EVB), and provides information to enable operation, output voltage setting of the evaluation board. Table of Contents Purpose ................................................................................................................................................................. 1 Introduction............................................................................................................................................................ 2 Bench Test Setup Conditions ................................................................................................................................. 3 Schematic, Bill of Materials & Board Layout ........................................................................................................... 6 More Information.................................................................................................................................................... 9 Important Notice for Richtek Evaluation Board ....................................................................................................... 9 EVB_RT4813GQUF-00 July 2017 1 http://www.richtek.com RT4813GQUF Evaluation Board your power partner. Introduction General Product Information The RT4813 allows systems to take advantage of new battery chemistries that can supply significant energy when the battery voltage is lower than the required voltage for system power ICs. By combining built-in power transistors, synchronous rectification, and low supply current; this IC provides a compact solution for systems using advanced Li-Ion battery chemistries. The RT4813 is a boost regulator designed to provide a minimum output voltage from a single-cell Li-Ion battery, even when the battery voltage is below system minimum. In boost mode, output voltage regulation is guaranteed to a maximum load current of 3.1A. Quiescent current in Shutdown Mode is less than 1µA, which maximizes battery life. Product Feature             CMCOT Topology and Small Output Ripple when VIN Close VOUT Voltage Operates from a Single Li-ion Cell : 1.8V to 5.5V Adjustable Output Voltage : 1.8V to 5.5V PSM Operation Up to 96% Efficiency Input Over Current Limit Input/Output Over Voltage Protection Programmable Average Output Current Limit Range : 3100mA to 550mA Internal Compensation Output Discharge Output Short Protection True Load Disconnect Key Performance Summary Table Key Features Evaluation Board Number: PCB090_V1 Default Input Voltage 3.6V Max Output Current 3.1A Default Output Voltage VOUT = 5V Default Marking & Package Type RT4813GQUF, UQFN-9L 2x2 (FC) EVB_RT4813GQUF-00 July 2017 2 http://www.richtek.com RT4813GQUF Evaluation Board your power partner. Bench Test Setup Conditions Headers Description and Placement Carefully inspect all the components used in the EVB according to the following Bill of Materials table, and then make sure all the components are undamaged and correctly installed. If there is any missing or damaged component, which may occur during transportation, please contact our distributors or e-mail us at evb_service@richtek.com. Test Points The EVB is provided with the test points and pin names listed in the table below. Test point/ Pin name Signal Comment (expected waveforms or voltage levels on test points) VIN Input voltage Input voltage with range 1.8V to 5.5V. EN VOUT Enable Enable control pin for VOUT. SW Switching Node Switching Node. PGND/GND Ground Ground. SDA/SCL I2C Control Pins to set functions such as ILIM_OFF / IPCHG. VOUT Output Voltage Default voltage : 5V ± 1%. FB Feedback Voltage Default voltage : 0.5V ± 1%. EVB_RT4813GQUF-00 July 2017 3 http://www.richtek.com RT4813GQUF Evaluation Board your power partner. Power-up & Measurement Procedure 1. Connect input voltage (1.8V < VIN < 5.5V). 2. To use a jumper at “H” option to tie EN pin to input voltage VIN via JP1 or external voltage for enabling the device. Inversely, to use a jumper at “L” option to tie EN pin to ground GND for disabling the device. 3. To verify the output voltage VOUT via the dividing resistors. 4. To connect an external load up to 1A and verify the output voltage and current. I2C Register Setting The register as the table shown can be programmed by a MCU through the dedicated I2C interface. The device slave address is 0x39. EVB_RT4813GQUF-00 July 2017 4 http://www.richtek.com RT4813GQUF Evaluation Board your power partner. EVB_RT4813GQUF-00 July 2017 5 http://www.richtek.com RT4813GQUF Evaluation Board your power partner. Schematic, Bill of Materials & Board Layout EVB Schematic Diagram Bill of Materials Reference Qty Part number Description Package Manufacture U1 1 RT4813GQUF Boost Converter UQFN-9L 2x2 (FC) Richtek C1, C2, C3, C4 4 GRM21BR61A226ME51 22µF/10V/X7R/0805 C-0805 Murata C5 1 GRM185R61C105KE44D 1µF/16V/X5R/0603 C-0603 Murata C6 1 GRM32ER61A107ME20L 100µF/10V/X5R/1210 C-1210 Murata L1 1 SPM6530T-1R5M100 1.5µH L-SH8018 TDK R1 1 PFR059093FNH 909K/0402/1% R-0402 乾坤 R2 1 PFR05104FNH 100K/0402/1% R-0402 乾坤 EVB_RT4813GQUF-00 July 2017 6 http://www.richtek.com RT4813GQUF Evaluation Board your power partner. PCB Layout Top View (1st layer) PCB Layout—Inner Side (2nd Layer) EVB_RT4813GQUF-00 July 2017 7 http://www.richtek.com RT4813GQUF Evaluation Board your power partner. PCB Layout—Inner Side (3rd Layer) Bottom View (4th Layer) EVB_RT4813GQUF-00 July 2017 8 http://www.richtek.com RT4813GQUF Evaluation Board your power partner. More Information For more information, please find the related datasheet or application notes from Richtek website http://www.richtek.com. Important Notice for Richtek Evaluation Board THIS DOCUMENT IS FOR REFERENCE ONLY, NOTHING CONTAINED IN THIS DOCUMENT SHALL BE CONSTRUED AS RICHTEK’S WARRANTY, EXPRESS OR IMPLIED, UNDER CONTRACT, TORT OR STATUTORY, WITH RESPECT TO THE PRESENTATION HEREIN. IN NO EVENT SHALL RICHTEK BE LIABLE TO BUYER OR USER FOR ANY AND ALL DAMAGES INCLUDING WITHOUT LIMITATION TO DIRECT, INDIRECT, SPECIAL, PUNITIVE OR CONSEQUENTIAL DAMAGES. EVB_RT4813GQUF-00 July 2017 9 http://www.richtek.com