TPS40193EVM-001

www.ti.com Table of Contents User’s Guide TPS40193 Buck Controller Evaluation Module User's Guide ABSTRACT The TPS40193EVM-001 evaluation module is a 12-V to 1.8-V synchronous buck converter built around the TPS40193 synchronous buck controller. This module provides a convenient test platform for both evaluating the TPS40193 controller in a real application and prototyping synchronous buck converters using the TPS40193 controller. Table of Contents 1 Introduction.............................................................................................................................................................................3 1.1 Description......................................................................................................................................................................... 3 1.2 Applications........................................................................................................................................................................3 1.3 Features............................................................................................................................................................................. 3 2 TPS40193EVM-001 Electrical Performance Specifications................................................................................................ 4 3 Schematic................................................................................................................................................................................5 4 General Configuration and Description................................................................................................................................6 4.1 Adjusting Output Voltage (R7)............................................................................................................................................6 4.2 Adjusting Short-Circuit Protection (R9).............................................................................................................................. 6 4.3 Disable Jumper (JP1).........................................................................................................................................................6 4.4 Test Point Descriptions.......................................................................................................................................................7 5 Test Setup................................................................................................................................................................................9 5.1 Equipment.......................................................................................................................................................................... 9 5.2 Equipment Setup..............................................................................................................................................................10 5.3 Start-Up/Shutdown Procedure..........................................................................................................................................11 5.4 Output Ripple Voltage Measurement Procedure.............................................................................................................. 11 5.5 Control Loop Gain and Phase Measurement Procedure..................................................................................................11 5.6 Equipment Shutdown....................................................................................................................................................... 12 6 TPS40193EVM-001 Typical Performance Data and Characteristic Curves..................................................................... 13 6.1 Efficiency..........................................................................................................................................................................13 6.2 Line and Load Regulation................................................................................................................................................ 13 6.3 Output Voltage Ripple...................................................................................................................................................... 14 6.4 Switch Node..................................................................................................................................................................... 15 6.5 Control Loop Bode Plot.................................................................................................................................................... 16 7 EVM Assembly Drawings and Layout.................................................................................................................................17 8 Bill of Materials..................................................................................................................................................................... 21 9 Revision History................................................................................................................................................................... 22 List of Figures Figure 3-1. TPS40193EVM-001 Schematic.................................................................................................................................5 Figure 5-1. TPS40193EVM-001 Recommended Test Setup..................................................................................................... 10 Figure 5-2. TPS40193EVM-001 Output Ripple Measurement—Tip and Barrel Using TP15 and TP16.................................... 10 Figure 5-3. TPS40193EVM-001 Control Loop Measurement Setup..........................................................................................11 Figure 6-1. TPS40193EVM-001 Efficiency vs Load Current......................................................................................................13 Figure 6-2. TPS40193EVM-001 Output Voltage vs Load Current (±0.5% Window Shown)......................................................13 Figure 6-3. TPS40193EVM-001 Output Voltage Ripple............................................................................................................ 14 Figure 6-4. TPS40193EVM-001 Switching Waveforms (VIN = 8 V, IOUT = 10 A)....................................................................... 15 Figure 6-5. TPS40193EVM-001 Switching Waveforms (VIN = 14 V, IOUT = 10 A)..................................................................... 15 Figure 6-6. TPS40193EVM-001 Gain and Phase vs Frequency............................................................................................... 16 Figure 6-7. TPS40193EVM-001 Gain and Phase vs Frequency............................................................................................... 16 Figure 7-1. TPS40193EVM-001 Component Placement...........................................................................................................17 SLUU274A – MAY 2007 – REVISED JANUARY 2022 Submit Document Feedback TPS40193 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 1 Trademarks www.ti.com Figure 7-2. TPS40193EVM-001 Silkscreen...............................................................................................................................18 Figure 7-3. TPS40193EVM-001 Top Copper Layer...................................................................................................................18 Figure 7-4. TPS40193EVM-001 Bottom Copper Layer............................................................................................................. 19 Figure 7-5. TPS40193EVM-001 Internal Layer 1...................................................................................................................... 19 Figure 7-6. TPS40193EVM-001 Internal Layer 2...................................................................................................................... 20 List of Tables Table 2-1. TPS40193EVM-001 Electrical and Performance Specifications.................................................................................4 Table 4-1. Adjusting VOUT with R7............................................................................................................................................... 6 Table 4-2. Adjusting VSCP with R9............................................................................................................................................... 6 Table 4-3. Test Point Descriptions............................................................................................................................................... 7 Table 8-1. Bill of Materials..........................................................................................................................................................21 Trademarks All trademarks are the property of their respective owners. 2 TPS40193 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SLUU274A – MAY 2007 – REVISED JANUARY 2022 Submit Document Feedback www.ti.com Introduction 1 Introduction The TPS40193EVM-001 evaluation module (EVM) is a synchronous buck converter that provides a fixed 1.8-V output at up to 10 A from a 12-V input bus. The EVM is designed to power up from a single supply, so no additional bias voltage is required for start-up. The demonstration module uses the TPS40193 reduced pin count mid-voltage synchronous buck controller. 1.1 Description The TPS40193EVM-001 is designed to use a regulated 12-V (8V–14V) bus to produce a regulated 1.8-V output at up to 10 A of load current. The EVM is designed to demonstrate the capabilities of the TPS40193 in a typical 12-V bus to low-voltage application while providing a number of test points for evaluating the TPS40193 in a given application. The EVM can be modified to support output voltages from 0.9 V to 3.3 V by changing a single set resistor. 1.2 Applications • • • • • Non-isolated medium current point-of-load and low voltage bus converters Networking equipment Telecommunications equipment Computer peripherals Digital set-top box 1.3 Features • • • • • • • • 8-V to 14-V input range 1.8-V fixed output, adjustable with single resistor 10-ADC steady state output current 300-kHz switching frequency (fixed by the TPS40193) Single SO-8 MOSFETs for both the main switch and synchronous rectifier Double-sided, two active layer printed circuit board (PCB) with all components on top side – Test point signals routed on internal layers Active converter area of less than 1.2 inch2(