TPS61282EVM-586

User's Guide SLVU956B – December 2013 – Revised April 2018 TPS6128xEVM-586 Evaluation Module This User's Guide describes the characteristics, operation, and use of the TPS6128x evaluation module (EVM). This EVM enables test and evaluation of Texas Instruments' TPS61281 and TPS61282 devices, each a 2.3-MHz (typ.), up to 4.8-V, step-up dc-dc converter with integrated Pass-Through Mode. This User's Guide includes EVM specifications, user software description, the schematic diagram, bill of materials, and board layout. After the release of the A-version device in the summer of 2014, the EVM is assembled with the TPS6128xA (supports PWM mode during startup which is not available for TPS6128x). In 2018, the EVM is assembled with D-version device TPS6128xD. 1 2 3 4 5 Contents Introduction ................................................................................................................... 1.1 Requirements ....................................................................................................... 1.2 Applications .......................................................................................................... 1.3 Features .............................................................................................................. TPS6128xEVM Schematic ................................................................................................. Connector and Test Point Descriptions ................................................................................... 3.1 J1 Input Connectors ................................................................................................ 3.2 J2 Output Connector ............................................................................................... 3.3 Other Connectors ................................................................................................... 3.4 Jumpers .............................................................................................................. TPS6128xEVM Assembly Drawings and Layout ........................................................................ List of Materials .............................................................................................................. 2 2 2 2 3 4 4 4 5 5 7 9 List of Figures 1 TPS6128xEVM-586 Schematic ............................................................................................ 3 2 TPS6128xEVM-586 Component Placement ............................................................................. 7 3 TPS6128xEVM-586 Top Copper .......................................................................................... 7 4 TPS6128xEVM-586 Inner Layer 1......................................................................................... 8 5 TPS6128xEVM-586 Inner Layer 2......................................................................................... 8 6 TPS6128xEVM-586 Bottom Copper ...................................................................................... 8 Trademarks SLVU956B – December 2013 – Revised April 2018 Submit Documentation Feedback TPS6128xEVM-586 Evaluation Module Copyright © 2013–2018, Texas Instruments Incorporated 1 Introduction 1 www.ti.com Introduction The TPS61281 and TPS61282 devices each provide a power-supply solution for products powered by either a three-cell alkaline, NiCd or NiMH battery, or a single-cell Li-Ion or Li-polymer battery. The wide input voltage range is ideal for portable power applications such as mobile phones or computer peripherals. In addition, the TPS61281 and TPS61282 can also maintain output biased at the input voltage level. In this mode, the synchronous rectifier is current-limited, and allows external loads (for example, an audio amplifier) to be powered with a restricted supply. In this mode, quiescent current is reduced to 18 μA. Input current in shutdown mode is less than 5 μA in order to maximize battery life. 1.1 Requirements The TPS6128xEVM is designed to operate over the full input voltage range and produces a fixed, predefined output voltage. In order to operate this EVM, only a dc power supply able to deliver between 2.3 V and 4.8 V is required. 1.2 Applications • • • 1.3 Features • • • • • • • • 2 Single-Cell Ni-Rich, Si-Anode, Li-Ion, LiFePO4 smart-phones or tablet PCs 2.5G, 3G, 4G mini-module data cards Current-limited applications featuring high peak power loads 95% efficiency at 2.3-MHz operation VIN range from 2.3 V to 4.8 V 2-μA quiescent current in low IQ pass-through mode Integrated pass-through mode (35 mΩ) Programmable valley inductor current limit and output voltage via I²C interface True pass-through mode during shutdown Thermal shutdown and overload protection Total Solution Size