Texas Instruments TPS56C20 Operation & User’s Manual
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Guide ABSTRACT This user's guide describes the characteristics, operation, and use of the TPS56C20EVM-614 evaluation module (EVM). The document includes performance specifications, test setup and results, the printed-circuit board (PCB) layout, a schematic, and a bill of materials (BOM). Table of Contents 1 Introduction........................................................................... ...
Figure 5-5. Bottom Layer...........................................................................................................................................................17 Figure 6-1. TPS56C20EVM-614 Schematic Diagram.................................................. ...
can be adjusted using the feedback resistor divider network or using VID commands from an I2C interface bus. It is a single, adaptive on-time, D-CAP2™ mode converter requiring a very low external component count. The D-CAP2 control circuit is optimized for low-ESR output capacitors such as POSCAP or SP-CAP, or ceramic types. The D-CAP2 cont ...
A summary of the TPS56C20EVM-614 performance specifications is provided in Table 2-1. Specifications are given for an input voltage of VIN = 12V and an output voltage of 1.1V, unless otherwise noted. The ambient temperature is 25°C for all measurement, unless otherwise noted. Table 2-1. TPS56C20EVM-614 and Performance Specifications Summary Parameter Test Conditions Min Typ Max Units Input voltage range (VIN) 4.5 12 17 ...
TPS56720, TPS56920, and TPS56C20. The module ships with a TPS56C20 IC soldered but the user can replace the TPS56C20 with any of the other three ICs to test their performance. 3.1 Output Voltage Set Point To change the output voltage of the TPS56C20EVM-614, change the value of resistor R7. Calculate the value of R7 for a specific output vol ...
3.2.3 Voltage Scaling Procedure Set voltage scaling by using the following steps: 1. Go to Program Files and click on the TPS56X20 I2C TEST PANEL Application. The TPS56X20 I2C TEST PANEL will load as shown in Figure 3-2. Modifications www.ti.com 6 TPS56C20 Buck Converter Evaluation Module User's Guide SBAU227A – MARCH 2014 – REVISED JUNE 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated ...
2. As a first step before sending a VOUT command, click the write command On the EXT Power Settings block as shown in Figure 3-3. Figure 3-3. EXT Power Settings 3. Go to the VOUTS control block and click on the ALL VOUTS control, illustrated in Figure 3-4. The drop down menu gives an option to select different VOUT. www.ti.com Modifications SBAU227A – MARCH 2014 – REVISED JUNE 2021 Submit Document Feedback TPS56C20 B ...
4. Select a particular value and click on WRITE VOUT switch. Observe that the Voltage at TP6 relative to TP7 is changed to the programmed VOUT value. 3.3 Output Filter and Closed Loop Response The TPS56C20 relies on the output filter characteristics to ensure stability of the control loop. The recommended output filter components for common output voltages are in Table 3-1. It may be possible for other output filter component ...
This section describes how to properly connect, set up, and use the TPS56C20EVM-614. 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, start-up, and shutdown. 4.1 Input/Output Connections The TPS56C20EVM-614 provides input/output connectors and test points as shown in Table 4-1. The design requires ...
Figure 4-1. TPS56C20EVM-614 Efficiency Figure 4-2. TPS56C20EVM-614 Efficiency (Low Current) Test Setup and Results www.ti.com 10 TPS56C20 Buck Converter Evaluation Module User's Guide SBAU227A – MARCH 2014 – REVISED JUNE 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated ...
Figure 4-3 shows the load regulation for the TPS56C20EVM-614. Figure 4-3. TPS56C20EVM-614 Load Regulation 4.5 Line Regulation Figure 4-4 shows the line regulation for the TPS56C20EVM-614. Figure 4-4. TPS56C20EVM-614 Line Regulation www.ti.com Test Setup and Results SBAU227A – MARCH 2014 – REVISED JUNE 2021 Submit Document Feedback TPS56C20 Buck Converter Evaluation Module User's Guide 11 Copyright © 2021 Texas Instruments Incorpora ...
Figure 4-5 shows the TPS56C20EVM-614 response to load transient. The current step is from 50 mA to 12 A (0% to 100% of rated load), with a slew rate of 500 mA/µs. Figure 4-5 shows the total peak-to-peak output voltage variation. Figure 4-5. TPS56C20EVM-614 Load Transient Response 4.7 Output Voltage Ripple Figure 4-6 shows the TPS56C20EVM-614 output voltage ripple. The output current is the rated full load of 12 A. Figure 4-6. T ...
Figure 4-7 shows the TPS56C20EVM-614 start up waveform as relative to VIN. Figure 4-7. TPS56C20EVM-614 Start Up Relative to VIN Figure 4-8 shows the TPS56C20EVM-614 Start Up waveform is relative to Enable(EN). Figure 4-8. TPS56C20EVM-614 Start Up Relative to Enable www.ti.com Test Setup and Results SBAU227A – MARCH 2014 – REVISED JUNE 2021 Submit Document Feedback TPS56C20 Buck Converter Evaluation Module User's Guide 13 Copyright © 2021 ...
Figure 4-9 shows the TPS56C20EVM-614 shut down waveform relative to VIN. Figure 4-9. TPS56C20EVM-614 Shut Down Relative to VIN Figure 4-10 shows the TPS56C20EVM-614 Shut Down waveform relative to Enable(EN). Figure 4-10. TPS56C20EVM-614 Shut Down Relative to Enable Test Setup and Results www.ti.com 14 TPS56C20 Buck Converter Evaluation Module User's Guide SBAU227A – MARCH 2014 – REVISED JUNE 2021 Submit Document Feedback Copyright © 2021 ...
This section provides a description of the TPS56C20EVM-614, PCB layout, and layer illustrations. 5.1 Board Layout Figure 5-1 through Figure 5-5 show the board layout for the TPS56C20EVM-614. The top layer contains the main power traces for PVIN, VIN, VOUT, SWITCH node, and a huge area filled with ground. Many of the signal traces are also located on the top side. The design locates the input decoupling capacitors and the voltage set point re ...
Figure 5-3. Internal Layer 1 Board Layout www.ti.com 16 TPS56C20 Buck Converter Evaluation Module User's Guide SBAU227A – MARCH 2014 – REVISED JUNE 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated ...
Figure 5-5. Bottom Layer www.ti.com Board Layout SBAU227A – MARCH 2014 – REVISED JUNE 2021 Submit Document Feedback TPS56C20 Buck Converter Evaluation Module User's Guide 17 Copyright © 2021 Texas Instruments Incorporated ...
This section presents the TPS56C20EVM-614 schematic, bill of materials (BOM), and reference. 6.1 Schematic Figure 6-1 shows the schematic for the TPS56C20EVM. 1 2 J1 PGND 1 2 JP1 1 2 3 4 5 6 7 8 9 10 J4 N2510-6002-RB 1 2 JP3 PGND 0.1µF C9 PGND 0.01µF C11 C12 PGND 10.0k R5 TP3 TP4 4.7µF C3 PGND PVIN VIN 10µF C4 10µF C5 10.0k R3 10.0k R4 1 2 J2 TP5 TP8 TP9 TP10 TP2 TP1 EN 1 SDA 2 SCL 3 A1 4 A0 5 VIN 6 PVIN 7 ...
Table 6-1 lists the BOM for the TPS56C20EVM. Table 6-1. TPS56C20EVM-614 Bill of Materials Designator Quanti ty Value Description Package Reference Part Number Manufacturer C3 1 4.7uF CAP, CERM, 4.7uF, 10V, +/-10%, X5R, 0805 0805 0805ZD475KAT2A AVX C4, C5, C13, C14 4 10uF CAP, CERM, 10uF, 35V, +/-10%, X7R, 1210 1210 GRM32ER7YA106K A12L MuRata C6 1 100uF CAP, CERM, 100uF, 6.3V, +/-20%, X5R, 1210 1210 C1210C107M9PACT U Kemet C9 1 0.1uF C ...
Revision History www.ti.com 20 TPS56C20 Buck Converter Evaluation Module User's Guide SBAU227A – MARCH 2014 – REVISED JUNE 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated ...
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