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User's Guide

SLVU642–May 2012

TPS54526EVM-608 5.5-A, SWIFT™ Regulator Evaluation

Module

This user’s guide contains background information for the TPS54526 as well as support documentation for

the TPS54526EVM-608 evaluation module. Also included are the performance specifications, schematic

and the bill of materials for the TPS54526EVM-608.

Contents

1 Introduction .................................................................................................................. 2

2 Performance Specification Summary ..................................................................................... 2

3 Modifications ................................................................................................................. 3

3.1 Output Voltage Set Point .......................................................................................... 3

4 Test Setup and Results .................................................................................................... 3

4.1 Input / Output Connections ....................................................................................... 3

4.2 Start Up Procedure ................................................................................................ 4

4.3 Efficiency ............................................................................................................ 4

4.4 Light Load Efficiency .............................................................................................. 5

4.5 Load Regulation .................................................................................................... 5

4.6 Line Regulation ..................................................................................................... 6

4.7 Load Transient Response ........................................................................................ 6

4.8 Output Voltage Ripple ............................................................................................. 7

4.9 Input Voltage Ripple ............................................................................................... 7

4.10 Start Up .............................................................................................................. 8

5 Board Layout ................................................................................................................ 9

5.1 Layout ............................................................................................................... 9

6 Schematic, Bill of Materials and Reference ............................................................................ 12

6.1 Schematic ......................................................................................................... 12

6.2 Bill of Materials .................................................................................................... 13

6.3 Reference .......................................................................................................... 13

List of Figures

1 TPS54526EVM-608 Efficiency ............................................................................................ 4

2 TPS54526EVM-608 Light Load Efficiency............................................................................... 5

3 TPS54526EVM-608 Load Regulation .................................................................................... 5

4 TPS54526EVM-608 Line Regulation..................................................................................... 6

5 TPS54526EVM-608 Load Transient Response......................................................................... 6

6 TPS54526EVM-608 Output Voltage Ripple ............................................................................. 7

7 TPS54526EVM-608 Input Voltage Ripple ............................................................................... 7

8 TPS54526EVM-608 Start Up.............................................................................................. 8

9 TPS54526EVM-608 Start Up Relative to Enable ....................................................................... 8

10 Top Assembly ............................................................................................................... 9

11 Top Layer................................................................................................................... 10

12 Internal Layer 1 ............................................................................................................ 10

13 Internal Layer 2 ............................................................................................................ 11

14 Bottom Layer as Seen from Back Side................................................................................. 11

SWIFT, D-CAP2, Eco-mode are trademarks of Texas Instruments.

SLVU642–May 2012 TPS54526EVM-608 5.5-A, SWIFT™ Regulator Evaluation Module

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Summary of content (19 pages)

PAGE 1
User's Guide SLVU642 – May 2012 TPS54526EVM-608 5.5-A, SWIFT™ Regulator Evaluation Module This user’s guide contains background information for the TPS54526 as well as support documentation for the TPS54526EVM-608 evaluation module. Also included are the performance specifications, schematic and the bill of materials for the TPS54526EVM-608. 1 2 3 4 5 6 Contents Introduction ..................................................................................................................
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Introduction 15 16 www.ti.com ........................................................................... TPS54526EVM-608 Schematic Diagram............................................................................... Bottom Assembly as Seen from Back Side 12 12 List of Tables 1 1 Input Voltage and Output Current Summary ............................................................................ 2 2 TPS54526 EVM and Performance Specifications Summary ..............................................
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Modifications www.ti.com 3 Modifications These evaluation modules are designed to provide access to the feature of the TPS54526. Some modification can be made to this module. 3.1 Output Voltage Set Point To change the output voltage of the EVMs, it is necessary to change the value of resistor R1. Changing the value of R1 can change the output voltage above 0.765V. The value of R1 for a specific output voltage can be calculated using Equation 1 and Equation 2. For output voltage from 0.76V to 2.
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Test Setup and Results www.ti.com Table 4. Connection and Test Points Reference Designator 4.2 Function J1 VIN (see Table 1 for VIN range) J2 VOUT, 1.05 V at 5.5 A maximum JP1 EN control. Connect EN to OFF to disable, connect EN to ON to enable.
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Test Setup and Results www.ti.com 4.4 Light Load Efficiency Figure 2 shows the efficiency at light loads for the TPS54526EVM-608 at an ambient temperature of 25°C. 100 90 80 Efficiency (%) 70 60 50 40 30 20 VIN = 5 V VIN = 12 V VIN = 18 V 10 0 0.001 0.01 0.1 1 Output Current (A) G001 Figure 2. TPS54526EVM-608 Light Load Efficiency 4.5 Load Regulation The load regulation for the TPS54526EVM-608 is shown Figure 3. 1.2 VIN = 5 V VIN = 12 V 1 Output Voltage Deviation (%) 0.8 0.6 0.4 0.2 0 −0.
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Test Setup and Results 4.6 www.ti.com Line Regulation The line regulation for the TPS54526EVM-608 is shown Figure 4. 1 0.8 Output Voltage Deviation (%) 0.6 0.4 0.2 0 −0.2 −0.4 −0.6 −0.8 IOUT = 2.5 A −1 4.5 6 7.5 9 10.5 12 Input Voltage (V) 13.5 15 16.5 18 G002 Figure 4. TPS54526EVM-608 Line Regulation 4.7 Load Transient Response The TPS54526EVM-608 response to load transient is shown in Figure 5. The current step is from 1.25 A to 3.75 A (25% to 75% of rated load).
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Test Setup and Results www.ti.com 4.8 Output Voltage Ripple The TPS54526EVM-608 output voltage ripple is shown in Figure 6. The output current is the rated full load of 5.5 A. VOUT = 20 mV/div (ac coupled) SW = 5 V/div Time = 1 µs/div Figure 6. TPS54526EVM-608 Output Voltage Ripple 4.9 Input Voltage Ripple The TPS54526EVM-608 input voltage ripple is shown in Figure 7. The output current is the rated full load of 5.5 A. VIN = 50 mV/div (ac coupled) SW = 5 V/div Time = 1 µs/div Figure 7.
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Test Setup and Results www.ti.com 4.10 Start Up The TPS54526EVM-608 start up waveform relative to VIN is shown in Figure 8. VIN = 10 V/div SS = 5 V/div VOUT = 1 V/div Time = 1 ms/div Figure 8. TPS54526EVM-608 Start Up The TPS54526EVM-608 start up waveform relative to enable (EN) is shown in Figure 9. EN = 10 V/div VREG5 = 5 V/div VOUT = 1 V/div Time = 1 ms/div Figure 9. TPS54526EVM-608 Start Up Relative to Enable 8 TPS54526EVM-608 5.
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Board Layout www.ti.com 5 Board Layout This section provides description of the TPS54526EVM-608, board layout, and layer illustrations. 5.1 Layout The board layout for the TPS54526EVM-608 and is shown in Figure 10 through Figure 15. The top layer contains the main power traces for VIN, VO and ground. Also on the top layer are connections for the pins of the TPS54526 and a large area filled with ground. Many of the signal traces are also located on the top side.
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Board Layout www.ti.com Figure 11. Top Layer Figure 12. Internal Layer 1 10 TPS54526EVM-608 5.
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Board Layout www.ti.com Figure 13. Internal Layer 2 Figure 14. Bottom Layer as Seen from Back Side SLVU642 – May 2012 Submit Documentation Feedback TPS54526EVM-608 5.
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Schematic, Bill of Materials and Reference www.ti.com Figure 15. Bottom Assembly as Seen from Back Side 6 Schematic, Bill of Materials and Reference This section presents the TPS54526EVM-608 schematic, bill of materials and reference. 6.1 Schematic Figure 16 is the schematic for the TPS54526EVM. Figure 16. TPS54526EVM-608 Schematic Diagram 12 TPS54526EVM-608 5.
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Schematic, Bill of Materials and Reference www.ti.com 6.2 Bill of Materials Table 5. Bill of Materials RefDes QTY Value Description Size Part Number MFR C1, C3 2 10 µF Capacitor, ceramic, 25 V, X5R, 20% 1210 C3225X5R1E106M TDK C11 0 Open Capacitor, ceramic 1206 Std Std C2, C8 0 Open Capacitor, ceramic 0603 Std Std C4, C7 2 0.1 µF Capacitor, ceramic, 50 V, X7R, 10% C5 1 8200 pF Capacitor, ceramic, 25 V, X7R , 10% 0603 Std Std C6 1 1.
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Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
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EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods.
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FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
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【Important Notice for Users of this Product in Japan】】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.
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EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.