TPS562200EVM-601

www.ti.com Table of Contents User’s Guide TPS562200 Step-Down Converter Evaluation Module User's Guide ABSTRACT This user's guide contains information for the TPS562200 as well as support documentation for the TPS562200EVM-601 evaluation module. Included are the performance specifications, schematic, and the bill of materials of the TPS562200EVM-601. Table of Contents 1 Introduction.............................................................................................................................................................................3 2 Performance Specification Summary................................................................................................................................... 4 3 Modifications...........................................................................................................................................................................5 3.1 Output Voltage Setpoint..................................................................................................................................................... 5 4 Test Setup and Results.......................................................................................................................................................... 6 4.1 Input/Output Connections.................................................................................................................................................. 6 4.2 Start-Up Procedure............................................................................................................................................................ 6 4.3 Efficiency............................................................................................................................................................................7 4.4 Load Regulation................................................................................................................................................................. 8 4.5 Line Regulation.................................................................................................................................................................. 8 4.6 Load Transient Response.................................................................................................................................................. 9 4.7 Output Voltage Ripple...................................................................................................................................................... 10 4.8 Input Voltage Ripple......................................................................................................................................................... 11 4.9 Start-Up............................................................................................................................................................................12 4.10 Shut-Down..................................................................................................................................................................... 13 5 Board Layout.........................................................................................................................................................................14 5.1 Layout.............................................................................................................................................................................. 14 6 Schematic, Bill of Materials, and Reference...................................................................................................................... 16 6.1 Schematic........................................................................................................................................................................ 16 6.2 Bill of Materials.................................................................................................................................................................17 6.3 Reference.........................................................................................................................................................................17 7 Revision History................................................................................................................................................................... 17 List of Figures Figure 4-1. TPS562200EVM-601 Efficiency................................................................................................................................ 7 Figure 4-2. TPS562200EVM-601 Light Load Efficiency.............................................................................................................. 7 Figure 4-3. TPS562200EVM-601 Load Regulation..................................................................................................................... 8 Figure 4-4. TPS562200EVM-601 Line Regulation...................................................................................................................... 8 Figure 4-5. TPS562200EVM-601 Load Transient Response, 25% to 75% Load Step................................................................9 Figure 4-6. TPS562200EVM-601 Output Voltage Ripple, IOUT = 2 A........................................................................................ 10 Figure 4-7. TPS562200EVM-601 Output Voltage Ripple, IOUT = 250 mA................................................................................. 10 Figure 4-8. TPS562200EVM-601 Output Voltage Ripple, IOUT = 10 mA....................................................................................11 Figure 4-9. TPS562200EVM-601 Input Voltage Ripple, IOUT = 2 A........................................................................................... 11 Figure 4-10. TPS562200EVM-601 Start-Up Relative to VIN ..................................................................................................... 12 Figure 4-11. TPS562200EVM-601 Start-Up Relative to EN...................................................................................................... 12 Figure 4-12. TPS562200EVM-601 Shut-Down Relative to VIN .................................................................................................13 Figure 4-13. TPS562200EVM-601 Shut-Down Relative to EN..................................................................................................13 Figure 5-1. Top Assembly.......................................................................................................................................................... 14 Figure 5-2. Bottom Layer........................................................................................................................................................... 15 Figure 6-1. TPS562200EVM-601Schematic Diagram............................................................................................................... 16 SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 TPS562200 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated 1 Trademarks www.ti.com List of Tables Table 1-1. Input Voltage and Output Current Summary...............................................................................................................3 Table 2-1. TPS562200EVM-601Performance Specifications Summary......................................................................................4 Table 3-1. Output Voltages.......................................................................................................................................................... 5 Table 4-1. Connection and Test Points........................................................................................................................................ 6 Table 6-1. Bill of Materials..........................................................................................................................................................17 Trademarks D-CAP2™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 2 TPS562200 Step-Down Converter Evaluation Module User's Guide SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated www.ti.com Introduction 1 Introduction The TPS562200 is a single, adaptive on-time, D-CAP2™ mode, synchronous buck converter requiring a very low external component count. The D-CAP2 control circuit is optimized for low-ESR output capacitors such as POSCAP, SP-CAP, or ceramic types and features fast transient response with no external compensation. The switching frequency is internally set at a nominal 650 kHz. The high-side and low-side switching MOSFETs are incorporated inside the TPS562200 package along with the gate-drive circuitry. The low drain-to-source on resistance of the MOSFETs allows the TPS562200 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The TPS562200 dc/dc synchronous converter is designed to provide up to a 2-A output from an input voltage source of 4.5 V to 17 V. The output voltage range is from 0.8 V to 6.5 V. Rated input voltage and output current ranges for the evaluation module are given in Table 1-1. The TPS562200EVM-601 evaluation module (EVM) is a single, synchronous buck converter providing 1.05 V at 2 A from 4.5-V to 17-V input. This user’s guide describes the TPS562200EVM-601 performance. Table 1-1. Input Voltage and Output Current Summary EVM Input Voltage Range Output Current Range TPS562200EVM-601 VIN = 4.5 V to 17 V 0 A to 2 A SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 TPS562200 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated 3 Performance Specification Summary www.ti.com 2 Performance Specification Summary A summary of the TPS562200EVM-601 performance specifications is provided in Table 2-1. Specifications are given for an input voltage of VIN = 12 V and an output voltage of 1.05 V, unless otherwise noted. The ambient temperature is 25°C for all measurement, unless otherwise noted. Table 2-1. TPS562200EVM-601Performance Specifications Summary Specifications Test Conditions Input voltage range (VIN) Min Typ Max 4.5 12 17 Output voltage Operating frequency CH1 4 VIN = 12 V, IO = 2 A Output current range VIN = 12 V, LO = 2.2 µH Output ripple voltage VIN = 12 V, IO = 2 A TPS562200 Step-Down Converter Evaluation Module User's Guide V 1.05 V 650 kHz 0 Over current limit Unit 2 A A 20 mVPP SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated www.ti.com Modifications 3 Modifications These evaluation modules are designed to provide access to the features of the TPS562200. Some modifications can be made to this module. 3.1 Output Voltage Setpoint To change the output voltage of the EVMs, it is necessary to change the value of resistor R5. Changing the value of R5 can change the output voltage above 0.765 V. The value of R5 for a specific output voltage can be calculated using Equation 1. R5 = R6 ´ (VOUT -0.765 V ) (1) 0.765 V Table 3-1 lists the R5 values for some common output voltages. For higher output voltages of 1.8 V or above, a feedforward capacitor (C9) may be used to improve phase margin. Pads for this component (C9) are provided on the printed-circuit board. Note that the values given in Table 3-1 are standard values and not the exact value calculated using Table 3-1. Table 3-1. Output Voltages Output Voltage (V) R5 (kΩ) R6 (kΩ) C9 (pF) L1 (µH) Min Typ Max C6 + C7 +C8 (µF) 1.0 15.4 49.9 1.5 2.2 4.7 20 - 68 1.05 18.7 49.9 1.5 2.2 4.7 20 - 68 1.2 28.7 49.9 1.5 2.2 4.7 20 - 68 1.5 47.5 49.9 1.5 2.2 4.7 20 - 68 1.8 68.1 49.9 optional, 10 pF max 1.5 2.2 4.7 20 - 68 2.5 113 49.9 optional, 10 pF max 2.2 3.3 4.7 20 - 68 3.3 165 49.9 optional, 10 pF max 2.2 3.3 4.7 20 - 68 5.0 274 49.9 optional, 10 pF max 3.3 4.7 4.7 20 - 68 6.5 374 49.9 optional, 10 pF max 3.3 4.7 4.7 20 - 68 SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 TPS562200 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated 5 Test Setup and Results www.ti.com 4 Test Setup and Results This section describes how to properly connect, set up, and use the TPS562200EVM-601. The section also includes test results typical for the evaluation modules and efficiency, output load regulation, output line regulation, load transient response, output voltage ripple, input voltage ripple, start-up, and switching frequency. 4.1 Input/Output Connections The TPS562200EVM-601 is provided with input/output connectors and test points as shown in Table 4-1. A power supply capable of supplying 2 A must be connected to J1 through a pair of 20-AWG wires. The load must be connected to J2 through a pair of 20-AWG wires. The maximum load current capability is 2 A. Wire lengths must be minimized to reduce losses in the wires. Test point TP1 provides a place to monitor the VIN input voltages with TP2 providing a convenient ground reference. TP7 is used to monitor the output voltage with TP8 as the ground reference. Table 4-1. Connection and Test Points Reference Designator Function J1 VIN (see Table 1-1 for VIN range) J2 VOUT, 1.05 V at 2-A maximum JP1 EN control. Shunt EN to GND to disable, shunt EN to VIN to enable. TP1 VIN positive monitor point TP2 GND monitor test point TP3 EN test point TP4 Switch node test point TP5 Test point for loop response measurements TP6 VOUT positive monitor point TP7 GND monitor test point 4.2 Start-Up Procedure 1. Ensure that the jumper at JP1 (Enable control) pins 1 and 2 are covered to shunt EN to GND, disabling the output. 2. Apply appropriate VIN voltage to VI (J1-2) and GND (J1-1). 3. Move the jumper at JP1 (Enable control) from pins 1 and 2 (EN and GND), to pins 2 and 3 (EN and VIN) enabling the output. 6 TPS562200 Step-Down Converter Evaluation Module User's Guide SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated www.ti.com Test Setup and Results 4.3 Efficiency Figure 4-1 shows the efficiency for the TPS562200EVM-601 at an ambient temperature of 25°C. 100 90 80 Efficiency - % 70 VIN = 12 V VIN = 5 V 60 50 40 30 20 10 0 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 Output Current - A C001 Figure 4-1. TPS562200EVM-601 Efficiency Figure 4-2 shows the efficiency at light loads for the TPS562200EVM-601 at an ambient temperature of 25°C. 100 90 80 Efficiency - % 70 60 VIN = 5 V VIN = 12 V 50 40 30 20 10 0 0.001 0.01 0.1 1 Output Current - A C002 Figure 4-2. TPS562200EVM-601 Light Load Efficiency SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 TPS562200 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated 7 Test Setup and Results www.ti.com 4.4 Load Regulation The load regulation for the TPS562200EVM-601 is shown in Figure 4-3. 1.50 1.00 VIN = 5 V Load Regulation - % VIN = 12 V 0.50 0.00 ±0.50 ±1.00 ±1.50 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 Output Current - A C003 Figure 4-3. TPS562200EVM-601 Load Regulation 4.5 Line Regulation The line regulation for the TPS562200EVM-601 is shown in Figure 4-4. 0.5 0.4 0.3 Line Rgulation - % 0.2 IOUT = 1 A 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 4 6 8 10 12 14 16 18 Input Voltage - V C004 Figure 4-4. TPS562200EVM-601 Line Regulation 8 TPS562200 Step-Down Converter Evaluation Module User's Guide SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated www.ti.com Test Setup and Results 4.6 Load Transient Response The TPS562200EVM-601 response to load transient is shown in Figure 4-5. The current steps and slew rates are indicated in the figures. Total peak-to-peak voltage variation is as shown. VOUT = 20 mV / div (ac coupled) IOUT = 500 mA / div Load step = 0.5 A - 1.5 A, slew rate = 500 mA / µsec Time = 200 µsec / div Figure 4-5. TPS562200EVM-601 Load Transient Response, 25% to 75% Load Step SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 TPS562200 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated 9 Test Setup and Results www.ti.com 4.7 Output Voltage Ripple The TPS562200EVM-601 output voltage ripple is shown in Figure 4-6, Figure 4-7, and Figure 4-8. The output currents are as indicated. VOUT = 20 mV / div (ac coupled) SW = 5 V / div Time = 1 µsec / div Figure 4-6. TPS562200EVM-601 Output Voltage Ripple, IOUT = 2 A VOUT = 20 mV / div (ac coupled) SW = 5 V / div Time = 1 µsec / div Figure 4-7. TPS562200EVM-601 Output Voltage Ripple, IOUT = 250 mA 10 TPS562200 Step-Down Converter Evaluation Module User's Guide SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated www.ti.com Test Setup and Results VOUT = 20 mV / div (ac coupled) SW = 5 V / div Time = 20 µsec / div Figure 4-8. TPS562200EVM-601 Output Voltage Ripple, IOUT = 10 mA 4.8 Input Voltage Ripple The TPS562200EVM-601 input voltage ripple is shown in Figure 4-9. The output current is as indicated. VIN = 100 mV / div (ac coupled) SW = 5 V / div Time = 1 µsec / div Figure 4-9. TPS562200EVM-601 Input Voltage Ripple, IOUT = 2 A SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 TPS562200 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated 11 Test Setup and Results www.ti.com 4.9 Start-Up The TPS562200EVM-601 start-up waveform relative to VIN is shown in Figure 4-10. Load = 1 Ω resistive. VIN = 10 V / div EN = 10 V / div VOUT = 500 mV / div Time = 2 msec / div Figure 4-10. TPS562200EVM-601 Start-Up Relative to VIN The TPS562200EVM-601 start-up waveform relative to enable (EN) is shown in Figure 4-11. Load = 1 Ω resistive. VIN = 10 V / div EN = 10 V / div VOUT = 500 mV / div Time = 2 msec / div Figure 4-11. TPS562200EVM-601 Start-Up Relative to EN 12 TPS562200 Step-Down Converter Evaluation Module User's Guide SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated www.ti.com Test Setup and Results 4.10 Shut-Down The TPS562200EVM-601 shut-down waveform relative to VIN is shown in Figure 4-12. Load = 1 Ω resistive. VIN = 10 V / div EN = 10 V / div VOUT = 500 mV / div Time = 2 msec / div Figure 4-12. TPS562200EVM-601 Shut-Down Relative to VIN The TPS562200EVM-601 shut-down waveform relative to EN is shown in Figure 4-13. Load = 1 Ω resistive. VIN = 10 V / div EN = 10 V / div VOUT = 500 mV / div Time = 2 msec / div Figure 4-13. TPS562200EVM-601 Shut-Down Relative to EN SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 TPS562200 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated 13 Board Layout www.ti.com 5 Board Layout This section provides a description of the TPS562200EVM-601, board layout, and layer illustrations. 5.1 Layout The board layout for the TPS562200EVM-601 is shown in Figure 5-1 and Figure 5-2. The top layer contains the main power traces for VIN, VOUT, and ground. Also on the top layer are connections for the pins of the TPS562209 and a large area filled with ground. Most of the signal traces are also located on the top side. The input decoupling capacitors, C1, C2, and C3 are located as close to the IC as possible. The input and output connectors, test points, and all of the components are located on the top side. The bottom layer is a ground plane along with the switching node copper fill, signal ground copper fill and the feed back trace from the point of regulation to the top of the resistor divider network. Figure 5-1. Top Assembly 14 TPS562200 Step-Down Converter Evaluation Module User's Guide SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated www.ti.com Board Layout Figure 5-2. Bottom Layer SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 TPS562200 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated 15 Schematic, Bill of Materials, and Reference www.ti.com 6 Schematic, Bill of Materials, and Reference 6.1 Schematic Figure 6-1 is the schematic for the TPS562200EVM-601. TP1 TP4 TP6 L1 J1 2 1 3 TP3 TP2 C1 10µF 2.2 uH U1 VIN = 4.5 V to 17 V C2 10µF 5 C3 0.01µF 4 VIN SW EN VBST VFB GND 1 2 6 1 R2 0 VOUT = 1.05 V, 2 A 2 C4 C6 22µF 0.1µF C7 22µF C8 DNP TP5 J2 1 2 R4 TP7 0 TPS562200DDC R1 10.0k C5 DNP 3 2 1 C9 DNP R5 18.7k R3 DNP SH-JP1 JP1 R6 49.9k NT1 Net-Tie Figure 6-1. TPS562200EVM-601Schematic Diagram 16 TPS562200 Step-Down Converter Evaluation Module User's Guide SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated www.ti.com Schematic, Bill of Materials, and Reference 6.2 Bill of Materials Table 6-1. Bill of Materials QTY Value 1 Description Package Reference Printed Circuit Board Part Number Manufacturer PWR601 Any 2 10uF CAP, CERM, 10uF, 25V, +/-10%, X5R, 0805 0805 C2012X5R1E106K125AB TDK 1 0.01uF CAP, CERM, 0.01uF, 50V, +/-10%, X7R, 0603 0603 C1608X7R1H103K TDK 1 0.1uF CAP, CERM, 0.1uF, 50V, +/-10%, X7R, 0603 0603 C1608X7R1H104K TDK 2 22uF CAP, CERM, 22uF, 6.3V, +/-20%, X5R, 1206 1206 C3216X5R0J226K TDK 2 2x1 Conn Term Block, 2POS, 3.81mm, TH 2POS Terminal Block 1727010 Phoenix Contact 1 1x3 Header, TH, 100mil, 1x3, Gold plated, 230 mil above insulator PBC03SAAN PBC03SAAN Sullins Connector Solutions 1 2.2 uH Inductor, Power Line, Magnetic Shielded, ±30% 6.9x7.2 mm CLF7045T2R2N TDK Thermal Transfer Printable Labels, 1.250" W x 0.250" H - 10,000 per roll PCB Label 1.25"H x 0.250"W THT-13-457-10 Brady 1 1 10.0k RES, 10.0k ohm, 1%, 0.1W, 0603 0603 CRCW060310K0FKEA Vishay-Dale 2 0 RES, 0 ohm, 5%, 0.1W, 0603 0603 ERJ-3GEY0R00V Panasonic 1 18.7k RES, 18.7k ohm, 1%, 0.1W, 0603 0603 CRCW060318K7FKEA Vishay-Dale 1 49.9k RES, 49.9k ohm, 1%, 0.1W, 0603 0603 CRCW060349K9FKEA Vishay-Dale 1 1x2 Shunt, 2mm, Gold plated, Black 2mm Shunt, Closed Top 2SN-BK-G Samtec 2 Red Test Point, Miniature, Red, TH Red Miniature Testpoint 5000 Keystone 2 Black Test Point, Miniature, Black, TH Black Miniature Testpoint 5001 Keystone 2 White Test Point, Miniature, White, TH White Miniature Testpoint 5002 Keystone 1 Yellow Test Point, Miniature, Yellow, TH Yellow Miniature Testpoint 5004 Keystone 1 4.5V to 17 V Input, 2-A Synchronous Step-Down SWIFT Converter with Eco-Mode, DDC0006A DDC0006A TPS562200DDC Texas Instruments 0 CAP, CERM, 0603 0603 0 CAP, CERM, 1206 1206 0 CAP, CERM, 0603 0603 0 RES, 0603 0603 6.3 Reference 1. TPS56220x 4.5 V to 17 V Input, 2-A Synchronous Step-Down Voltage Regulator in SOT-23 data sheet (SLVSCB0) 7 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision * (January 2014) to Revision A (August 2021) Page • Updated user's guide title................................................................................................................................... 3 • Updated the numbering format for tables, figures, and cross-references throughout the document. ................3 SLVU985A – JANUARY 2014 – REVISED AUGUST 2021 TPS562200 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated 17 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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