TPS65282EVM

www.ti.com Table of Contents User’s Guide TPS65282 Buck Converter Evaluation Module User's Guide Table of Contents 1 INTRODUCTION...................................................................................................................................................................... 2 2 BACKGROUND........................................................................................................................................................................3 3 BOARD LAYOUT..................................................................................................................................................................... 4 4 BENCH TEST SETUP CONDITIONS...................................................................................................................................... 6 4.1 Headers Description and Jumper Placement.....................................................................................................................6 4.2 Jumpers and Switches....................................................................................................................................................... 7 5 POWER-UP PROCEDURE...................................................................................................................................................... 8 6 SCHEMATIC AND BILL OF MATERIALS............................................................................................................................... 9 7 Revision History......................................................................................................................................................................9 List of Figures Figure 3-1. Placement (Top Layer).............................................................................................................................................. 4 Figure 3-2. Board Layout (Top Layer)..........................................................................................................................................5 Figure 3-3. Board Layout (Bottom Layer – Ground Plane).......................................................................................................... 5 Figure 4-1. Headers Description and Jumper Placement............................................................................................................6 Figure 6-1. TPS65282EVM Schematic........................................................................................................................................9 SLVU865A – MARCH 2013 – REVISED MAY 2021 Submit Document Feedback TPS65282 Buck Converter Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 1 INTRODUCTION www.ti.com 1 INTRODUCTION This document presents the information required to operate the TPS65282 PMIC as well as the support documentation including schematic and bill of materials. 2 TPS65282 Buck Converter Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SLVU865A – MARCH 2013 – REVISED MAY 2021 Submit Document Feedback www.ti.com BACKGROUND 2 BACKGROUND The TPS65282 PMIC contains a buck converter and two power switches. The buck converter is designed to provide an adjustable voltage with maximum 4-A continuous currents. The two power switches are designed to provide current limit at 75 mA - 2.7 A, while the current limit is available setting by external resistor. As there are many possible options to set the converters, Table 2-1 presents the performance specification summary for the EVM. Table 2-1. Summary of Performance TEST CONDITIONS PERFORMANCE VIN = 4.5 V to 18 V fSW = 600 kHz (25°C ambient) Buck : 5.0 V, up to 4 A Power Switch 1: 5.0 V, up to 2.7 A Power Switch 2: 5.0 V, up to 2.7 A The evaluation module is designed to provide access to the features of the TPS65282. Some modifications can be made to this module to test performance at different input and output voltages, current and switching frequency. Please contact TI Field Applications Group for advice on these matters. SLVU865A – MARCH 2013 – REVISED MAY 2021 Submit Document Feedback TPS65282 Buck Converter Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 3 BOARD LAYOUT www.ti.com 3 BOARD LAYOUT Figure 3-1. Placement (Top Layer) 4 TPS65282 Buck Converter Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SLVU865A – MARCH 2013 – REVISED MAY 2021 Submit Document Feedback www.ti.com BOARD LAYOUT Figure 3-2. Board Layout (Top Layer) Figure 3-3. Board Layout (Bottom Layer – Ground Plane) SLVU865A – MARCH 2013 – REVISED MAY 2021 Submit Document Feedback TPS65282 Buck Converter Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 5 BENCH TEST SETUP CONDITIONS www.ti.com 4 BENCH TEST SETUP CONDITIONS 4.1 Headers Description and Jumper Placement Figure 4-1. Headers Description and Jumper Placement Test points: 1. LX of VOUT 6 TPS65282 Buck Converter Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SLVU865A – MARCH 2013 – REVISED MAY 2021 Submit Document Feedback www.ti.com BENCH TEST SETUP CONDITIONS 4.2 Jumpers and Switches Table 4-1. Jumpers and Switches NO. FUNCTION PLACEMENT JP1 Buck Enable (EN) Connect EN1 to GND to disable VOUT1, connect EN1 to VIN through a resistor to enable VOUT1; Leave open to enable VOUT1. COMMENT JP2 Soft Start (SS) JP3, 4 Switching Frequency JP5 Switch 2 Enable Connect this pin to high enable power switch 2; connect it to ground to disable power switch 2; Leave it open to enable power switch through internal 1.25-MΩ pull up resistor. Not recommend to leave open JP6 Switch 1 Enable Connect this pin to high enable power switch 1; connect it to ground to disable power switch 1; Leave it open to enable power switch through internal 1.25-MΩ pull up resistor. Not recommend to leave open JP7 PGOOD Pull Up Connect this pin to V7V force the PGOOD pull up. Connect this pin Not recommend to leave open to GND there's no need to use this feature. Connect a external cap to this pin to program the soft start time of the buck converter; leave this pin open to have default 1-ms soft start time. Connect a resistor to this pin to set the switching frequency; leave it open to set FSW to 600 kHz; connect it to ground to set FSW to 300 kHz. SLVU865A – MARCH 2013 – REVISED MAY 2021 Submit Document Feedback TPS65282 Buck Converter Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 7 POWER-UP PROCEDURE www.ti.com 5 POWER-UP PROCEDURE 1. 2. 3. 4. 8 Apply 4.5 V - 18 V to JP7. Toggle JP1 to enable VOUT1. Toggle JP6 and JP5 to enable switch 1 and switch 2. Apply load to the output connectors. TPS65282 Buck Converter Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SLVU865A – MARCH 2013 – REVISED MAY 2021 Submit Document Feedback www.ti.com SCHEMATIC AND BILL OF MATERIALS 6 SCHEMATIC AND BILL OF MATERIALS The following pages contain the schematic and BOM. L1 744311470 2 GND TP6 1 4.7uH R11 0 J5 C12 22uF C9 47nF R12 40.2K GND C6 82pF JP8 R14 47 TP9 TP10 TP11 TP12 R13 7.68K TP13 J4 TP5 2 SW_IN 13 C7 22uF SW_IN 14 15 16 LX FB SW_IN 19 LX BST 17 18 GND U1 GND SW_OUT1 PGND AGND J3 TP4 GND PGND 1 GND 12 2 GND 1 20 J1 TP7 21 VIN VIN RSET C5 22uF 10 C4 22uF TPS65282 22 C10 10uF 23 J2 TP3 9 2 1 PGOOD nFALUT1 8 EN_SW1 SS nFALUT2 PAD 6 5 C11 10uF 4 100K 3 EN V7V EN_SW2 TP1 V7V ROSC TP8 24 R24 SW_OUT2 GND TP2 JP7 GND VIN COMP GND 2 2 GND 1 1 11 7 R6 15K 25 R4 100K R5 100K GND GND SW_IN GND V7V VIN JP2 R1 JP1 100K SW_IN SW_IN JP3 C1 100pF C2 4.7nF R2 JP4 C3 22nF JP5 JP6 R3 51K 4.7k GND GND GND GND Figure 6-1. TPS65282EVM Schematic 7 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision * (March 2013) to Revision A (May 2021) Page • Updated user's guide title................................................................................................................................... 2 • Updated the numbering format for tables, figures, and cross-references throughout the document. ................2 SLVU865A – MARCH 2013 – REVISED MAY 2021 Submit Document Feedback TPS65282 Buck Converter Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 9 IMPORTANT NOTICE AND DISCLAIMER TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATA SHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. 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