TPS51123EVM-399

www.ti.com Table of Contents User’s Guide TPS51123 Buck Controller Evaluation Module User's Guide Table of Contents 1 Introduction.............................................................................................................................................................................2 2 Performance Specification Summary................................................................................................................................... 2 3 Schematic................................................................................................................................................................................3 4 Test Setup and Results.......................................................................................................................................................... 4 5 Configuration.......................................................................................................................................................................... 6 6 Physical Layouts.................................................................................................................................................................... 7 7 List of Materials.....................................................................................................................................................................11 8 References............................................................................................................................................................................ 12 9 Revision History................................................................................................................................................................... 12 SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 TPS51123 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 1 Introduction www.ti.com 1 Introduction The TPS51123 is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The TPS51123 supports high-efficiency, fast transient response and provides a combined power-good signal. Out-of-Audio™ mode lightload operation enables low acoustic noise at much higher efficiency than conventional forced PWM operation. Adaptive on-time D-CAP™ control provides convenient and efficient operation. The device operates with supply input voltages ranging from 5.5 V to 28 V and supports output voltages from 2 V to 5.5 V. The TPS51123EVM evaluation module is a high-efficiency, dual synchronous buck converter providing 5 V at 8 A and 3.3 V at 8 A from a 8-V to 25-V input. Trademarks Out-of-Audio™ and D-CAP™ are trademarks of Texas Instruments. All trademarks are the property of their respective owners. 2 Performance Specification Summary Table 2-1 gives the EVM performance specifications and qualifications. Table 2-1. Performance Specification Summary SPECIFICATION VIN Input voltage range TEST CONDITIONS Voltage applied to VBAT MIN TYP 8 MAX 25 UNITS V CHANNEL1 VOUT Output voltage 5 f Operating frequency VTONSEL = VVREF, VVIN = 12 V, IOUT = 6 A IOUT Output current 8 V ≤ VVIN ≤ 25 V IOC Overcurrent limit VVIN = 12 V 245 8 10 V kHz A CHANNEL2 2 VOUT Output voltage f Operating frequency VTONSEL = VVREF, VVIN = 12 V, IOUT = 6 A IOUT Output current 8 V ≤ VVIN ≤ 25 V IOC Overcurrent limit VVIN = 12 V TPS51123 Buck Controller Evaluation Module User's Guide 3.3 V 305 kHz 8 10 A SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Schematic 3 Schematic Figure 3-1. TPS51123-EVM Schematic Diagram SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 TPS51123 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 3 Test Setup and Results www.ti.com 4 Test Setup and Results 4.1 Test Setup Connect the test equipment and TPS51123EVM board as shown in Figure 4-1. Oscilloscope CH1 DMM1 _ + CN1 + Electronic Load1 + _ DMM3 VO1 _ + VO1_GND VBAT _ _ Electronic Load2 VBAT_GND VO2_GND 12V/10A Power Supply CN2 + VO2 HPA399 TPS51123EVM _ + DMM2 CH2 Oscilloscope Figure 4-1. Equipment Setup for TPS51123EVM Board 4.2 Test Procedure 1. Ensure the switches SW4 (ENC) and SW3 (EN0) are in the “OFF” position. 2. Ensure the shunt jumper for JP1 is set to 5-pin to 6-pin (Med1), and shunt jumper for JP2 is set to 5-pin to 6-pin (auto-skip). 3. Apply appropriate VBAT voltage to the VBAT and VBAT_GND terminals. 4. Turn on SW3 (EN0), and both VREG5 (5V-LDO) and VREG3 (3.3V-LDO) start up. 5. When SW3 stays on, VREF (2V-REF) is enabled. 6. When SW3 stays on and turn on SW4 (ENC), CH1-output, and CH2-output start up. 4 TPS51123 Buck Controller Evaluation Module User's Guide SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Test Setup and Results 4.3 Start-Up Performance ENC (5 V/div) ENC (5 V/div) VOUT1 (2 V/div) VOUT2 (2 V/div) PGOOD (5 V/div) Figure 4-2. 5-V Start-Up Waveforms PGOOD (5 V/div) Figure 4-3. 3.3-V Start-Up Waveforms 4.4 Transient Performance Figure 4-4. 5-V Load Transient Response Figure 4-5. 3.3-V Load Transient Response SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 TPS51123 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 5 Configuration www.ti.com 5 Configuration This EVM can be set at a configuration of the user's choice. Please refer to the following specific configuration setting sections. 5.1 Switching Frequency Selection The switching frequency can be set by the TONSEL pin using JP1 on the EVM. The default setting is 245 kHz for CH1 and 305 kHz for CH2. Table 5-1. Switching Frequency Selection TONSEL CONNECTION SWITCHING FREQUENCY (kHz) CH1 CH2 GND (SLOW) 200 250 VREF (MED1) 245 305 VREG3 (MED2) 300 375 VREG5 (FAST) 365 460 5.2 Operation Mode Selection Operation mode can be set by the SKIPSEL pin using JP2 on the EVM. The default setting on the EVM is auto-skip mode. Table 5-2. Operation Mode Selection SKIPSEL CONNECTION 6 OPERATION MODE GND Auto skip VREF PWM only VREG5 Out-of-Audio TPS51123 Buck Controller Evaluation Module User's Guide SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Physical Layouts 6 Physical Layouts This section provides the board layout and assembly drawings for the EVM, that include the top layer (Figure 6-1), the bottom layer (Figure 6-2), and inner layer views (Figure 6-3 and Figure 6-4) of the EVM. Figure 6-1. Top Layer Routing SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 TPS51123 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 7 Physical Layouts www.ti.com Figure 6-2. Bottom Layer Routing 8 TPS51123 Buck Controller Evaluation Module User's Guide SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Physical Layouts Figure 6-3. Inner Layer 1 SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 TPS51123 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 9 Physical Layouts www.ti.com Figure 6-4. Inner Layer 2 10 TPS51123 Buck Controller Evaluation Module User's Guide SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com List of Materials 7 List of Materials Table 7-1 provides a list of materials for the TPS51123-EVM. Table 7-1. TPS51123 List of Materials RERERENCE DESIGNATOR QTY DESCRIPTION SIZE 0603 MFR PART NUMBER C13, C23 2 Capacitor, Ceramic, 0.1 μF, 50 V, X5R, 10% muRata GRM188B31H104K C10, C21 0 Capacitor 7.3 × 4.3 mm Any Any C11, C22 2 Capacitor, POS, 330 μF, 6.3 V, 25 mΩ, 20% 7.3 × 4.3 mm SANYO 6TPE330ML C12, C20 0 Capacitor 0805 Any Any C15 1 Capacitor, Ceramic, 10 μF, 6.3 V, X5R, 10% 0805 TDK C2012X5R0J106K C17 1 Capacitor, Ceramic, 33 μF, 6.3 V, X5R, 20% 1206 TDK C3216JB0J336M C19 1 Capacitor, Ceramic, 220 nF, 16 V, X5R, 10% 0603 muRata GRM188B31C224K C26 0 Capacitor 0603 Any Any C5 0 Capacitor 0805 Any Any C6, C7, C24, C25 4 Capacitor, Ceramic, 10 μF, 25 V, BJ, M 1210 Taiyo Yuden TMK325BJ106MM C1, C2, C3, C4, C8, C9, C14, C16, C18 0 Capacitor 0603 Any Any CN1, CN2 2 Adaptor, 3.5-mm probe clip ( or 131-5031-00) Tektronix 131-4244-00 D1 0 Diode SOT363 Any Any D2, D5 0 Diode, Schottky, 0.5 A, 30 V SOD-123 Any Any D3, D4 2 Diode, Schottky, 3 A, 20 V Rohm RSX501LA-20 OR RSX510L-20 JP1 1 Header, 2×4-pin, 100 mil spacing (36-pin strip) 0.20 × 0.40 inch Sullins PTC36DAAN JP2 1 Header, 2×3-pin, 10 mil spacing (36-pin strip) 0.20 × 0.30 inch Sullins PTC36DAAN L1, L2 2 Inductor, high-current, 3.3 μH, 14 A, 7.3 mΩ, SMT Q1, Q3 2 MOSFET, N-channel, 30 V, 11 A, 9.1 mΩ Q2, Q4 2 MOSFET, N-channe,l 30 V, 11 A, 12.5 mΩ R3, R10, R13, R15 4 R12 1 R11 R5 0.2 SMA 0.425 × 0.45 inch Toko FDA1055-3R3M SO8 IR IRF7821 SO8 Fairchild FDS6690AS Resistor, Chip, 0 Ω, 1/16 W, 1% 0603 Std Std Resistor, Chip, 620 kΩ, 1/16W, 1% Any Std Std 1 Resistor, Chip, 13 kΩ, 1/16W, 1% 0603 Any Any 1 Resistor, Chip, 30 kΩ, 1/16W, 1% 0603 Std Std R2 1 Resistor, Chip, 100 kΩ, 1/16W, 1% 0603 Std Std R6, R8 2 Resistor, Chip, 130 kΩ, 1/16W, 1% 0603 Std Std R7, R9 2 Resistor, Chip, 20 kΩ, 1/16W, 1% 0603 Std Std R1 1 Resistor, Chip, 10 kΩ, 1/16W, 1% 0603 Std Std R4, R14 2 Resistor, Chip, 5.1 Ω, 1/16W, 1% 0603 Std Std S1 1 Header, 2-pin, 100 mil spacing, (36-pin strip) 0.20 in. × 0.20 in. Sullins PTC36SAAN SW1, SW2 0 Switch 0.28 in. × 0.18 in. Any Any SW3, SW4 2 Switch, ON-ON mini toggle 0.28 in. × 0.18 in. Nikkai G-12AP TP1 0 Test Point 0.125 in. × 0.125 in. Any Any TP2, TP3, TP4, TP5, TP6, TP7 6 Test point, yellow, through-hole 0.125 in. × 0.125 in. Keystone 5014 U1 1 Dual Synchronous Step-Down ControllerWith OOA Operation and 100-mA LDO TI TPS51123RGE QFN-24 SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 TPS51123 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 11 References www.ti.com Table 7-1. TPS51123 List of Materials (continued) RERERENCE DESIGNATOR VBAT_GND, VBAT, VO1, VO2, VO1_GND, VO2_GND – QTY DESCRIPTION SIZE 0.12(D) × 0.4 inch MFR 6 Pin, wiring terminal 1 PCB, 3.5 3.5 in. × 2.7 in. Any × 0.062 in. TPS51123-EVM 2 Shunt, 2POs, gold 0.100 × 0.200 inch Molex 15-29-1025 4 Standoff M/F hex 4-40 nylon 0.625 inch Keystone 4803 0.25 inch Building Fasteners NY HN 440 4 Nut hex 4-40 nylon Mill Max PART NUMBER 3138-2-00-15-00-00-080 8 References Texas Instruments, TPS51123 Dual-Synchronous, Step-Down Controller with Out-of-Audio™ Operation and 100-mA data sheet 9 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision * (February 2009) to Revision A (January 2022) Page • Updated the numbering format for tables, figures, and cross-references throughout the document. ................2 • Updated the updated user's guide title............................................................................................................... 2 12 TPS51123 Buck Controller Evaluation Module User's Guide SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 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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