TPS53128EVM-620

www.ti.com Table of Contents User’s Guide TPS53128 Buck Controller Evaluation Module User's Guide ABSTRACT The TPS53128EVM-620 evaluation module presents an easy-to-use reference design for a common dual-output power supply using the TPS53128 controller in cost-sensitive applications. Table of Contents 1 Introduction.............................................................................................................................................................................3 1.1 Description......................................................................................................................................................................... 3 1.2 Application..........................................................................................................................................................................3 1.3 Features............................................................................................................................................................................. 3 2 Electrical Performance Specifications................................................................................................................................. 4 3 Schematics..............................................................................................................................................................................5 4 Connector and Test Point Descriptions................................................................................................................................6 4.1 Enable Switches (SW1 and SW2)......................................................................................................................................6 4.2 Switching Frequency Select Switch (SW3)........................................................................................................................ 6 4.3 Test Point Descriptions.......................................................................................................................................................6 5 Test Setup................................................................................................................................................................................8 5.1 Equipment.......................................................................................................................................................................... 8 5.2 Recommended Setup........................................................................................................................................................ 8 6 Test Procedure...................................................................................................................................................................... 10 6.1 Start-Up Procedure.......................................................................................................................................................... 10 6.2 Line/Load Regulation and Efficiency Measurement Procedure....................................................................................... 10 6.3 Output Ripple Voltage Measurement Procedure..............................................................................................................10 6.4 Shutdown Procedure........................................................................................................................................................10 7 Performance Data and Typical Characteristic Curves.......................................................................................................11 7.1 Efficiency.......................................................................................................................................................................... 11 7.2 Line and Load Regulation.................................................................................................................................................11 7.3 Output Voltage Ripple...................................................................................................................................................... 12 7.4 Switch Node Waveforms.................................................................................................................................................. 12 8 EVM Assembly Drawings and Layout.................................................................................................................................13 9 Bill of Materials..................................................................................................................................................................... 17 10 Revision History................................................................................................................................................................. 18 List of Figures Figure 3-1. TPS53128EVM-620 Schematic.................................................................................................................................5 Figure 4-1. Tip and Barrel Measurement for Output Voltage Ripple............................................................................................7 Figure 5-1. TPS53128EVM-620 Recommended Test Setup....................................................................................................... 9 Figure 7-1. Efficiency vs Load....................................................................................................................................................11 Figure 7-2. Efficiency vs Load....................................................................................................................................................11 Figure 7-3. Output Voltage vs Load........................................................................................................................................... 11 Figure 7-4. Output Voltage vs Load........................................................................................................................................... 11 Figure 7-5. Output Voltage Ripple............................................................................................................................................. 12 Figure 7-6. Output Voltage Ripple............................................................................................................................................. 12 Figure 7-7. Switching Waveform................................................................................................................................................12 Figure 7-8. Switching Waveform................................................................................................................................................12 Figure 8-1. Top Assembly.......................................................................................................................................................... 13 Figure 8-2. Bottom Assembly.................................................................................................................................................... 14 Figure 8-3. Top Layer.................................................................................................................................................................14 Figure 8-4. Bottom Layer........................................................................................................................................................... 15 SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 TPS53128 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 1 Trademarks www.ti.com Figure 8-5. Internal Layer 1....................................................................................................................................................... 15 Figure 8-6. Internal Layer 2....................................................................................................................................................... 16 List of Tables Table 2-1. TPS53128EVM-620 Electrical and Performance Specifications.................................................................................4 Table 4-1. TPS53128EVM-620 Test Points Description.............................................................................................................. 6 Table 9-1. TPS53128EVM-620 Bill of Materials.........................................................................................................................17 Trademarks D-CAP2™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 2 TPS53128 Buck Controller Evaluation Module User's Guide SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Introduction 1 Introduction 1.1 Description The TPS53128EVM-620 evaluation board provides the user with a convenient way to evaluate the TPS53128 dual D-CAP2™ mode control step-down controller in a realistic cost-sensitive application. Providing both a low core-type 1.05-V and I/O type 1.8-V output at up to 4 A from a loosely regulated 12-V (8-V to 22-V) source, the TPS53128EVM-620 includes switches and test points to assist a user in evaluating the performance of the TPS53128 controller in their application. 1.2 Application • • • • Digital television Set-top box DSL and cable modems Cost-sensitive digital consumer products 1.3 Features • • • • • 8-V to 22-V input 1.05-V and 1.8-V output Up to 4 A per channel output 350-kHz psudeo-fixed frequency D-CAP2 mode control Independent enable switches for power-on/power-off testing SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 TPS53128 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 3 Electrical Performance Specifications www.ti.com 2 Electrical Performance Specifications Table 2-1. TPS53128EVM-620 Electrical and Performance Specifications Parameter Notes and Conditions MIN TYP MAX UNIT 8 12 22 INPUT CHARACTERISTICS VIN Input voltage IIN Input current VIN = 12 V, IOUT1 = 4 A, IOUT2 = 4 A — 1.2 1.5 A No load input current VIN = 12 V, IOUT = 0 A — 20 — mA 4.0 4.2 4.5 V V VIN_UVLO Input UVLO IOUT = 4 A V OUTPUT CHARACTERISTICS VOUT1 Output voltage 1 VIN = 12 V, IOUT1 = 2 A — 1.05 — Line regulation VIN = 8 V to 22 V — — 1% Load regulation 1% IOUT1 = 0 A to 4 A — — VOUT1_rip Output voltage ripple VIN = 12 V, IOUT2 = 4 A — - IOUT1 Output current 1 VIN = 8 V to 22 V 4 A VOUT2 Output voltage 2 VIN = 12 V, IOUT2 = 2 A — 1.80 — V Line regulation VIN = 8 V to 22 V — — 1% Load regulation IOUT2 = 0 A to 4 A — — 1% VOUT2_rip Output voltage ripple VIN = 12 V, IOUT2 = 4 A — — IOUT2 VIN = 8 V to 22 V Output current 2 0 0 30 mVpp 30 mVpp 4 A SYSTEMS CHARACTERISTICS 4 FSW Switching frequency 200 350 400 ηpk1 Peak efficiency of output 1 η1 Full load efficiency of output 1 VIN = 12 V — 87% — VIN = 12 V, IOUT1 = 4 A — 85% ηpk2 — Peak efficiency of output 2 VIN = 12 V — 91% — η2 Full load efficiency of output 2 VIN = 12 V, IOUT2 = 4 A — 90% — TPS53128 Buck Controller Evaluation Module User's Guide kHz SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Schematics + + + 3 Schematics For reference only. See Table 9-1 for specific values. Figure 3-1. TPS53128EVM-620 Schematic SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 TPS53128 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 5 Connector and Test Point Descriptions www.ti.com 4 Connector and Test Point Descriptions 4.1 Enable Switches (SW1 and SW2) The TPS53128EVM-620 includes independent enable switches for each of the two outputs. When the switch is in the DIS position, the channel is disabled and discharged per the internal discharge characteristics of the TPS53128. To enable VOUT1, place SW1 in the EN position. To enable VOUT2, place SW2 in the EN position. 4.2 Switching Frequency Select Switch (SW3) The TPS53128EVM-620 does not populate SW3. When using TPS53128EVM-620 to evaluate the TPS53126 controller in the TSSOP package, SW3 can be populated to allow selection of the TPS53126 switching frequency between 350 kHz and 700 kHz. 4.3 Test Point Descriptions Table 4-1 lists the test points, their labels, uses, and where additional information is located. Table 4-1. TPS53128EVM-620 Test Points Description Test Point Label TP1 SS1 Monitor Channel 1 Soft-Start Voltage Use Section 4.3.4 Section TP2 SS2 Monitor Channel 2 Soft-Start Voltage Section 4.3.4 TP3 GND Ground for Input Voltage Section 4.3.1 TP4 GND Ground for Channel 1 Output Voltage Section 4.3.2 TP5 SW1 Monitor Switching Node for Channel 1 Section 4.3.5 TP6 GND Ground for Channel 2 Output Voltage Section 4.3.3 TP7 VOUT2 Monitor Output Voltage for Channel 2 Section 4.3.3 TP8 VOUT1 Monitor Output Voltage for Channel 1 Section 4.3.2 TP9 VIN Monitor Input Voltage Section 4.3.1 TP10 VREG5 Monitor Output of VREG5 Regulator Section 4.3.6 TP11 SW2 Monitor Switching Node for Channel 2 Section 4.3.5 4.3.1 Input Voltage Monitoring (TP3 and TP9) The TPS53128EVM-620 provides two test points for measuring the voltage applied to the module. This allows the user to measure the actual module voltage without losses from input cables and connectors. Measure all input voltage between TP9 and TP3. To use TP9 and TP3, connect a voltmeter positive terminal to TP9 and negative terminal to TP3. 4.3.2 Channel 1 Output Voltage Monitoring (TP4 and TP8) The TPS53128EVM-620 provides two test points for measuring the voltage generated at the VOUT1 output by the module. This allows the user to measure the actual output voltage without losses from output cables and connectors. Measure all DC output voltage measurements between TP8 and TP4. To use TP8 and TP4, connect a voltmeter positive terminal to TP8 and negative terminal to TP4. For output ripple measurements, TP8 and TP4 allow a user to limit the ground loop area by using the tip and barrel measurement technique shown in Figure 4-1. 6 TPS53128 Buck Controller Evaluation Module User's Guide SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Connector and Test Point Descriptions Metal Ground Barrel Probe Tip TP8 TP4 Figure 4-1. Tip and Barrel Measurement for Output Voltage Ripple 4.3.3 Channel 2 Output Voltage Monitoring (TP6 and TP7) The TPS53128EVM-620 provides two test points for measuring the voltage generated at the VOUT2 output by the module. This allows the user to measure the actual output voltage without losses from output cables and connectors. Measure all DC output voltage between TP7 and TP6. To use TP7 and TP6, connect a voltmeter positive terminal to TP7 and negative terminal to TP6. For output ripple measurements, TP7 and TP6 allow a user to limit the ground loop area by using the tip and barrel measurement technique shown in Figure 4-1. 4.3.4 Soft-Start Voltage Monitoring (TP1, TP2, and TP3) The TPS53128EVM-620 provides two test points for measuring the soft-start ramp voltages. TP1 monitors the soft-start ramp of Channel 1. TP2 monitors the soft-start ramp of Channel 2. To use TP1 or TP2, connect an oscilloscope probe between TP1 or TP2 and TP3. 4.3.5 Switching Node Monitoring (TP3, TP5, and TP11) The TPS53128EVM-620 provides two test points for measuring the switching node waveform voltages. TP5 monitors the switching node of Channel 1. TP2 monitors the switching node of Channel 2. To use TP5 or TP11, connect an oscilloscope probe between TP5 or TP11 and TP3. 4.3.6 5-V Regulator Output Monitoring (TP3 and TP10) The TPS53128EVM-620 provides a test point for measuring the output of the internal 5-V regulator. TP10 monitors the output voltage of the internal 5-V regulator. To use TP10, connect a voltmeter positive terminal to TP10 and negative terminal to TP3. SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 TPS53128 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 7 Test Setup www.ti.com 5 Test Setup 5.1 Equipment 5.1.1 Voltage Source The input voltage source (VIN) is a 0-V to 25-V variable DC source capable of supplying 3.0 ADC minimum. 5.1.2 Meters A1: 0 ADC to 5 ADC, ammeter V1: VIN, 0-V to 25-V voltmeter V2: VOUT1, 0-V to 2-V voltmeter V3: VOUT2, 0-V to 2-V voltmeter 5.1.3 Loads LOAD1 – One output load is an electronic load set for constant current mode capable of 0 ADC to 4 ADC at 1.05 VDC. LOAD2 – The other output load is an electronic load set for constant current mode capable of 0 ADC to 4 ADC at 1.8 VDC. 5.1.4 Oscilloscope and Probe The oscilloscope, analog or digital, must be set for AC-coupled measurement with 20-MHz bandwidth limiting. Use 20-mV/division vertical resolution and 1.0-µse /division horizontal resolution for the output ripple voltage test. Oscilloscope probes with exposed conductive ground barrels are recommended. 5.1.5 Recommended Wire Gauge VIN to J3 – The connection between the source voltage VIN and J1 of TPS53128EVM-620 can carry as much as 2 ADC. The minimum recommended wire size is AWG #16 with the total length of wire less than two feet (1-foot input, 1-foot return). J1 to LOAD1 and J2 to LOAD2 – The connection between J1 and LOAD1 and J2 and LOAD2 of TPS53128EVM-620 can carry as much as 4 ADC each. The minimum recommended wire size is AWG #14 with the total length of wire less than two feet (1-foot input, 1-foot return). 5.1.6 Other Test Equipment FAN – The TPS53128EVM-620 evaluation module includes components that can get hot to touch. Because this EVM is not enclosed to allow probing of circuit nodes, a small fan capable of 200lfm–400 lfm is recommended to reduce component temperatures when operating. 5.2 Recommended Setup Figure 5-1 shows the recommended test setup to evaluate the TPS53128EVM-620. Working at an ESD workstation, make sure that any wrist straps, bootstraps, or mats are connected referencing the user to earth ground before power is applied to the EVM. Electrostatic smock and safety glasses also are recommended. 8 TPS53128 Buck Controller Evaluation Module User's Guide SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Test Setup FAN + V1 - + - + + A1 - + LOAD1 1.05V @ 4A V2 LOAD2 1.8V @ 4A V3 - + VVIN Figure 5-1. TPS53128EVM-620 Recommended Test Setup SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 TPS53128 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 9 Test Procedure www.ti.com 6 Test Procedure 6.1 Start-Up Procedure 1. Prior to connecting the DC input source VIN, it is advisable to limit the source current from VIN to 3.0 ADC maximum. Make sure VIN is initially set to 0 V. 2. Ensure LOAD1 and LOAD2 are set to constant current mode to sink 0 A before VIN is applied. 3. Verify SW1 and SW2 are in the desired position. 4. Place a fan as shown in Figure 5-1 and turn it on, making sure air is flowing across the EVM. 5. Increase VIN from 0 V to 12 VDC. 6.2 Line/Load Regulation and Efficiency Measurement Procedure 1. 2. 3. 4. 5. 6. Set up the TPS53128EVM-620 per Section 5.2. Start up the TPS53128EVM-620 per Section 6.1. Adjust VIN to desired value between 8 VDC and 22 VDC. Adjust LOAD1/LOAD2 to desired load between 0 A and 4 ADC. Read input voltage, output voltage, and input current from V1, V2/V3, and A1, respectively. Shut down TPS53128EVM-620 per Section 6.4. 6.3 Output Ripple Voltage Measurement Procedure 1. 2. 3. 4. 5. Set up the TPS53128EVM-620 per Section 5.2. Start up the TPS53128EVM-620 per Section 6.1. Adjust VIN to desired value between 8 VDC and 22 VDC. Adjust LOAD1/LOAD2 to desired load between 0 A and 4 ADC. Connect the oscilloscope probe to TP8 and TP4 for VOUT1, or TP7 and TP6 for VOUT2 as shown in Figure 4-1. 6. Measure output ripple. 7. Shut down the TPS53128EVM-620 per Section 6.4. 6.4 Shutdown Procedure 1. 2. 3. 4. 5. 6. 10 Set SW1 to DIS. Set SW2 to DIS. Decrease LOAD1 to 0 A and shut down LOAD1. Decrease LOAD2 to 0 A and shut down LOAD2. Decrease VIN to 0 V and shut down VIN. Shut down the fan. TPS53128 Buck Controller Evaluation Module User's Guide SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Performance Data and Typical Characteristic Curves 7 Performance Data and Typical Characteristic Curves Figure 7-1 through Figure 7-8 present typical performance curves for the TPS53128EVM-620. Because actual performance data can be affected by measurement techniques and environmental variables, these curves are presented for reference and may differ from actual field measurements. 7.1 Efficiency 95 95 VI = 8 V 90 VI = 12 V VI = 22 V 90 85 85 80 80 h - Efficiency - % h - Efficiency - % VI = 12 V 75 70 65 VI = 8 V-22 V, VOUT1 = 1.05 V, IOUT1 = 0 A-4 A 60 55 VI = 22 V VI = 8 V 75 70 65 60 VI = 8 V-22 V, VOUT2 = 1.8 V, IOUT2 = 0 A-4 A 55 50 50 0 1 2 3 ILOAD - Load Current - A 4 5 0 1 Figure 7-1. Efficiency vs Load 2 3 ILOAD - Load Current - A 4 5 Figure 7-2. Efficiency vs Load 7.2 Line and Load Regulation 1.825 1.062 VI = 8 V-22 V, VOUT1 = 1.05 V, IOUT1 = 0 A-4 A 1.058 1.82 VO - Output Voltage - V VO - Output Voltage - V 1.06 VI = 22 V VI = 12 V 1.056 VI = 8 V-22 V, VOUT2 = 1.8 V, IOUT2 = 0 A-4 A VI = 8 V 1.054 1.052 1.815 VI = 22 V VI = 12 V 1.81 VI = 8 V 1.805 1.8 1.05 1.048 0 1 2 3 ILOAD - Load Current - A 4 Figure 7-3. Output Voltage vs Load 5 1.795 0 0.5 1 1.5 2 2.5 3 3.5 ILOAD - Load Current - A 4 4.5 Figure 7-4. Output Voltage vs Load SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 TPS53128 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 11 Performance Data and Typical Characteristic Curves www.ti.com 7.3 Output Voltage Ripple TPS53128EVM-620 Test Condition: Vin 12 V, VO1 1.05 V, 4 A TPS53128EVM-620 Test Condition: Vin 12 V, VO1 1.8 V, 4 A Output Ripple Output Ripple Figure 7-5. Output Voltage Ripple Figure 7-6. Output Voltage Ripple 7.4 Switch Node Waveforms TPS53128EVM-620 Test Condition: Vin 12 V, VO1 1.05 V, 4 A Switch Node Test Condition: Vin 12 V, VO2 1.8 V, 4 A Switch Node Figure 7-7. Switching Waveform 12 TPS53128EVM-620 TPS53128 Buck Controller Evaluation Module User's Guide Figure 7-8. Switching Waveform SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com EVM Assembly Drawings and Layout 8 EVM Assembly Drawings and Layout Figure 8-1 through Figure 8-6 show the design of the TPS53128EVM-620 printed circuit board. The EVM has been designed using a 4-layer, 2-oz copper-clad circuit board of 3.5 inch by 2.7 inch to allow the user to easily view, probe, and evaluate the TPS53128 control IC in a practical application. Moving components to both sides of the PCB or using additional internal layers can offer additional size reduction for space constrained systems. Figure 8-1. Top Assembly SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 TPS53128 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 13 EVM Assembly Drawings and Layout www.ti.com Figure 8-2. Bottom Assembly Figure 8-3. Top Layer 14 TPS53128 Buck Controller Evaluation Module User's Guide SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com EVM Assembly Drawings and Layout Figure 8-4. Bottom Layer Figure 8-5. Internal Layer 1 SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 TPS53128 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 15 EVM Assembly Drawings and Layout www.ti.com Figure 8-6. Internal Layer 2 16 TPS53128 Buck Controller Evaluation Module User's Guide SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Bill of Materials 9 Bill of Materials Table 9-1 contains the bill of materials for TPS53128EVM-620. The reference designators reference the schematic in Figure 3-1 and assembly locations in Figure 8-1 and Figure 8-2. Components with a quantity of 0 listed are not populated on the PCB but are provided for reference. Table 9-1. TPS53128EVM-620 Bill of Materials Qty RefDes Value Description Size Part Number MFR 0 C1 Capacitor, Aluminum, 25 V, 20% 0.328 × 0.390 inch Std Std 0 C12, C19, C20, C21 Capacitor, Ceramic 0603 Std Std 1 C15 4.7 μF Capacitor, Ceramic, 10 V, X5R, 20% 0805 Std Std 1 C16 1 μF Capacitor, Ceramic, 16 V, X5R, 20% 0805 Std Std 4 C2, C3, C4, C5 10 μF Capacitor, Ceramic, 25 V, X5R, 20% 1210 Std Std 2 C22, C23 4700 pF Capacitor, Ceramic, Low Inductance, 16 V, X7R, 20% 0603 Std Std 0 C24, C25 Capacitor, Ceramic, 25 V, X7R, 20% 0603 Std Std 2 C6, C11 0.1 μF Capacitor, Ceramic, 50 V, X5R, 10% 0603 Std Std 6 C7, C9, C10, C14, 47 μF C17, C18 Capacitor, Ceramic, 6.3 V, X5R, 20% 1206 Std Std 0 C8, C13 330 μF Capacitor, PXE, 4.0 V, 15 mΩ, 20% 7343 (D) APXE4R0ARA331MF 61G NIPPON CHEMICON 2 D1, D2 BAT54XV2T1 G Diode, Schottky, 200 mA, 30 V SOD523 BAT54XV2T1G On Semi 3 J1, J2, J3 ED120/2DS Terminal Block, 2-pin, 15-A, 5.1 mm 0.40 × 0.35 inch ED120/2DS OST 2 L1, L2 3.3 μH Inductor, SMT Chip Coil, ±30% 8 × 8 mm LQH88PN3R3N38 Murata 4 Q1, Q2, Q3, Q4 CSD17507Q5 A MOSFET, N-Chan, 30 V, 65 A, 11.8 mΩ QFN-8 POWER CSD17507Q5A TI 1 R1 1.27 k Resistor, Chip, 1/16W, 1% 0603 Std Std 4 R10, R4, R6, R8 10.0 k Resistor, Chip, 1/16W, 1% 0603 Std Std 2 R11, R12 5.11 Resistor, Chip, 1/16W, 1% 0603 Std Std 1 R13 332 Resistor, Chip, 1/16W, 1% 0603 Std Std 0 R14, R15 Resistor, Chip, 1/8W, 5% 0603 Std Std 2 R17, R18 Resistor, Chip, 1/16W, 1% 0603 Std Std 0 R2, R7, R9 Resistor, Chip, 1/16W, 1% 0603 Std Std 1 R3 3.32 k Resistor, Chip, 1/16W, 1% 0603 Std Std 1 R5 12.1 k Resistor, Chip, 1/16W, 1% 0603 Std Std 2 SW1, SW2 G12AP-RO Switch, ON-ON Mini Toggle 0.28 × 0.18 inch G12AP-RO Nikkai 0 SW3 G12AP-RO Switch, ON-ON Mini Toggle 0.28 × 0.18 inch G12AP-RO Nikkai 4 TP1, TP2, TP5, TP11 5012 Test Point, White, Thru Hole 0.125 × 0.125 inch 5012 Keystone 1 TP10 5013 Test Point, Orange, Thru Hole 0.125 × 0.125 inch 5013 Keystone 3 TP3, TP4, TP6 5011 Test Point, Black, Thru Hole 0.125 × 0.125 inch 5011 Keystone 2 TP7, TP8 5014 Test Point, Yellow, Thru Hole 0.125 × 0.125 inch 5014 Keystone 1 TP9 5010 Test Point, Red, Thru Hole 0.125 × 0.125 inch 5010 Keystone 1 U1 TPS53128PW IC, Dual Synchronous Step-Down Controller For Low-Voltage Power Rails TSSOP TPS53128PW TI 1 — 2.7 inch × 3.5 inch HPA620 Any 2.00 PCB, 2.70 inch × 3.50 inch × 0.063 inch FR-4 SLVU433A – FEBRUARY 2011 – REVISED JANUARY 2022 TPS53128 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 17 Revision History www.ti.com 10 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision * (February 2011) to Revision A (January 2022) Page • Updated the numbering format for tables, figures, and cross-references throughout the document. ................3 • Updated the user's guide title............................................................................................................................. 3 18 TPS53128 Buck Controller Evaluation Module User's Guide SLVU433A – FEBRUARY 2011 – 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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