TPS65261-1EVM

www.ti.com Table of Contents User’s Guide TPS65261-1 Buck Converter Evaluation Module User's Guide ABSTRACT This document presents the information required to operate the TPS65261/TPS65261-1 PMIC as well as the support documentation including schematic, layout, hardware setup and bill of materials. Table of Contents 1 Background.............................................................................................................................................................................2 2 Board Layout...........................................................................................................................................................................3 3 Bench Test Setup Conditions................................................................................................................................................ 5 4 Power-Up Procedure.............................................................................................................................................................. 7 5 Schematic................................................................................................................................................................................8 6 Bill of Materials....................................................................................................................................................................... 9 7 Revision History......................................................................................................................................................................9 List of Figures Figure 2-1. Placement................................................................................................................................................................. 3 Figure 2-2. Board Layout (Top Layer)..........................................................................................................................................4 Figure 2-3. Board Layout (Second Layer)................................................................................................................................... 4 Figure 2-4. Board Layout (Third Layer)....................................................................................................................................... 4 Figure 2-5. Board Layout (Bottom Layer).................................................................................................................................... 4 Figure 3-1. Headers Description and Jumper Placement............................................................................................................5 Figure 5-1. TPS65261/TPS65261-1 Schematic.......................................................................................................................... 8 Trademarks All trademarks are the property of their respective owners. SLVUA03A – DECEMBER 2013 – REVISED MAY 2021 Submit Document Feedback TPS65261-1 Buck Converter Evaluation Module User's Guide Copyright © 2021 Texas Instruments Incorporated 1 Background www.ti.com 1 Background The TPS65261/TPS65261-1 PMIC is a triple 3-A/2-A/2-A output current, synchronous step-down (buck) converter with an operational range of 4.5 V to 18 V. The TPS65261/TPS65261-1 features an automatic power sequence with connecting MODE pin to V7V and configuring EN1/2/3 pins. The device also features an open drain RESET signal to monitor power down. The TPS65261 operates in pulse skipping mode (PSM) and the TPS65261-1 operates in force continuous current mode (FCC) at light load. As there are many possible options to set the converters, Table 1-1 presents the performance specification summary for the EVM. Table 1-1. Summary of Performance Test Conditions Performance VIN = 4.5 V to 18 V fSW = 600 kHz (25°C ambient) BUCK1, 1.2 V, up to 3 A BUCK2, 3.3 V, up to 2 A BUCK3, 1.8 V, up to 2 A RESET, pull low when VDIV lower than 1.23 V This evaluation module is designed to provide access to the features of the TPS65261/TPS65261-1. Some modifications can be made to this module to test performance at different input and output voltages, current and frequency operation. Contact TI Field Applications Group for advice on these matters. 2 TPS65261-1 Buck Converter Evaluation Module User's Guide Copyright © 2021 Texas Instruments Incorporated SLVUA03A – DECEMBER 2013 – REVISED MAY 2021 Submit Document Feedback www.ti.com Board Layout 2 Board Layout Figure 2-1. Placement SLVUA03A – DECEMBER 2013 – REVISED MAY 2021 Submit Document Feedback TPS65261-1 Buck Converter Evaluation Module User's Guide Copyright © 2021 Texas Instruments Incorporated 3 Board Layout www.ti.com 2.1 EVM Layout 4 Figure 2-2. Board Layout (Top Layer) Figure 2-3. Board Layout (Second Layer) Figure 2-4. Board Layout (Third Layer) Figure 2-5. Board Layout (Bottom Layer) TPS65261-1 Buck Converter Evaluation Module User's Guide Copyright © 2021 Texas Instruments Incorporated SLVUA03A – DECEMBER 2013 – REVISED MAY 2021 Submit Document Feedback www.ti.com Bench Test Setup Conditions 3 Bench Test Setup Conditions Figure 3-1. Headers Description and Jumper Placement Test points: A: LX of VOUT1 B: LX of VOUT2 C: LX of VOUT3 VOUT1, VOUT2, VOUT3, VIN, PGOOD, RESET, V7V Table 3-1. Input/Output Connection Number Function Description J1 BUCK1 connector Output of BUCK1 J2 BUCK2 connector Output of BUCK2 J3 BUCK3 connector Output of BUCK3 J4 VIN connector Apply power supply to this connector. SLVUA03A – DECEMBER 2013 – REVISED MAY 2021 Submit Document Feedback TPS65261-1 Buck Converter Evaluation Module User's Guide Copyright © 2021 Texas Instruments Incorporated 5 Bench Test Setup Conditions www.ti.com 3.1 Jumpers and Switches Number Function Placement BUCK3 enable (EN3) Connect EN3 to GND to disable VOUT3, connect EN3 to VIN through a 100-kΩ resistor to enable VOUT3; Leave open to enable VOUT3. JP2 PGOOD pull-up PGOOD pull-up resistor connected to the V7V; Leave the two pins un-connected set the On board V7V is 6.3 V when VIN is 12 V pull-up voltage open; short the two pins set the pull-up voltage to be V7V. JP3 RESET pull-up RESET pull-up resistor connected to the V7V; Leave the two pins un-connected set the pullOn board V7V is 6.3 V when VIN is 12 V up voltage open; short the two pins set the pull-up voltage to be V7V. Mode Power sequencing mode control pin. Connect this pin to GND to set power sequence with dedicated enable pin; Connect this pin to V7V set the power sequence with the pre-defined power up and power down sequence. BUCK1 enable (EN1) Connect EN1 to GND to disable VOUT1, connect EN1 to VIN through a 100-kΩ resistor to enable VOUT1; Leave open to enable VOUT1. BUCK2 enable (EN2) Connect EN2 to GND to disable VOUT2, connect EN2 to VIN through a 100-kΩ resistor to enable VOUT2; Leave open to enable VOUT2. JP1 JP4 JP31 JP32 6 TPS65261-1 Buck Converter Evaluation Module User's Guide Copyright © 2021 Texas Instruments Incorporated Comment SLVUA03A – DECEMBER 2013 – REVISED MAY 2021 Submit Document Feedback www.ti.com Power-Up Procedure 4 Power-Up Procedure Power sequence with dedicated enable pin: 1. 2. 3. 4. Connect JP4 to GND. Apply 4.5 V - 18 V to J4. Toggle JP31, JP32 or JP1 to enable VOUT1, VOUT2 and VOUT3 respectively. Apply loads to the output connectors. Power sequence with the pre-defined power up and power down sequence: 1. 2. 3. 4. 5. Connect JP4 to V7V. Connect JP31 to High (or Low), JP32 to High (or Low) Apply 4.5 V - 18 V to J4. Toggle JP1 to enable VOUT1, VOUT2 and VOUT3. Apply loads to the output connectors. SLVUA03A – DECEMBER 2013 – REVISED MAY 2021 Submit Document Feedback TPS65261-1 Buck Converter Evaluation Module User's Guide Copyright © 2021 Texas Instruments Incorporated 7 Schematic www.ti.com 5 Schematic Figure 5-1. TPS65261/TPS65261-1 Schematic 8 TPS65261-1 Buck Converter Evaluation Module User's Guide SLVUA03A – DECEMBER 2013 – REVISED MAY 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Bill of Materials www.ti.com 6 Bill of Materials No. Designator Value Quantity Footprint Manufacturer 1 C1, C31, C32 4.7nF 3 0603 Generic Part Number Description CAP 4.7nF 50V CERAMIC X7R 0603 2 C9, C16, C25 47nF 3 0603 Generic CAP 47nF 50V CERAMIC X7R 0603 3 C231 3.3nF 1 0603 Generic CAP 3.3nF 50V CERAMIC X7R 0603 4 C71, C181 2.2nF 2 0603 Generic CAP 2.2nF 50V CERAMIC X7R 0603 5 C101, C102, C151, 22uF C152, C161, C162 6 1206 Generic CAP 22uF 16V CERAMIC X5R 1206 6 C72, C182, C232 22pF 3 0603 Generic CAP 22pF 50V CERAMIC X7R 0603 7 C10, C15 47pF 2 0603 Generic CAP 47pF 50V CERAMIC X7R 0603 8 C12, C13, C28 10uF 3 1206 Generic CAP 10uF 25V CERAMIC X5R 0603 9 C26 82pF 1 0603 Generic CAP 82pF 50V CERAMIC X7R 0603 10 C8, C17, C24 10nF 3 0603 Generic CAP 10nF 50V CERAMIC X7R 0603 11 C5 1uF 1 0603 Generic CAP 1uF 50V CERAMIC X5R 0603 12 R011, R312, R322 51K 3 0603 Generic RES 51k OHM 1/10W 1% 0603 SMD 13 R011, R2, R3, R311, R321 100K 5 0603 Generic RES 100k OHM 1/10W 1% 0603 SMD 14 R29 146K 1 0603 Generic RES 146k OHM 1/10W 1% 0603 SMD 15 R23, R30, R262, R263 20K 4 0603 Generic RES 20k OHM 1/10W 1% 0603 SMD 16 R7, R18 30K 2 0603 Generic RES 30k OHM 1/10W 1% 0603 SMD 17 R20 73.2K 1 0603 Generic RES 73.2k OHM 1/10W 1% 0603 SMD 18 R9, R16, R25, R101, R151, R261 0 6 0603 Generic RES 0 OHM 1/10W 1% 0603 SMD 19 R102, R152 39K 2 0603 Generic RES 39k OHM 1/10W 1% 0603 SMD 20 R153 19.5K 1 0603 Generic RES 19.5k OHM 1/10W 1% 0603 SMD 21 R103 8.67K 1 0603 Generic RES 8.67k OHM 1/10W 1% 0603 SMD 744311470 L1, L2, L3 4.7uH 3 IND_744311470 Wurth Electronics Inc 23(1) JP1, JP4, JP31, JP32 HEADER 3 PIN 4 JMP0.3 Mil-Max 800-10-064-10-001 Three Pin Header, Break SIPs into 000 groups of 3 24(2) JP2, JP3 HEADER 2 PIN 2 JMP0.2 Mil-Max 800-10-064-10-001 Two Pin Header, Break SIPs into 000 groups of 2 25 J1, J2, J3, J4 ED500/2DS 4 TB_2X5.0MM OnShore Technology ED500/2DS Inc Terminal Block, 2-pin, 15-A, 5.0mm 26 TP6, TP7, TP8, TP9, TP10, TP11, TP12 Test Point White 7 TP Keystone 5002 TEST POINT PC MINI .040"D WHITE 27 TP1, TP2, TP3, TP4, TP5 Test Point Black 5 TP Keystone 5001 TEST POINT PC MINI .040"D BLACK 28 TP13, TP14, TP15 Test Point White DNI TP Keystone 5002 TEST POINT PC MINI .040"D WHITE 22 29 6 30(3) 4 Jumper, 2.54mm, open top, Applied on item 23, 24 3M SJ-5303 (CLEAR) 31(4) U1 1 RHB Texas Instruments TPS65261RHBR 32(4) U1 1 RHB Texas Instruments TPS65261-1RHBR (1) (2) (3) (4) SMT power inductor BUMPON HEMISPHERE .44X.20 CLEAR Item 23: split into 3 pins. Item 24: split into 2 pins. Install item 25 on bottom at corners. Select item 31 (TPS65261RHBR) or item 32 (TPS65261-1RHBR) according to product target. 7 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision * (December 2013) to Revision A (May 2021) Page • Updated user's guide title................................................................................................................................... 2 SLVUA03A – DECEMBER 2013 – REVISED MAY 2021 Submit Document Feedback TPS65261-1 Buck Converter Evaluation Module User's Guide Copyright © 2021 Texas Instruments Incorporated 9 Revision History • 10 www.ti.com Updated the numbering format for tables, figures, and cross-references throughout the document. ................2 TPS65261-1 Buck Converter Evaluation Module User's Guide Copyright © 2021 Texas Instruments Incorporated SLVUA03A – DECEMBER 2013 – REVISED MAY 2021 Submit Document Feedback 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. These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, regulatory or other requirements. These resources are subject to change without notice. TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource. Other reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources. TI’s products are provided subject to TI’s Terms of Sale or other applicable terms available either on ti.com or provided in conjunction with such TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2022, Texas Instruments Incorporated