Texas Instruments TPS40074EVM, User Manual

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User’s Guide
TPS40074 Buck Controller Evaluation Module User's
Guide
Table of Contents
1 Introduction ............................................................................................................................................................................. 2
1.1 Description......................................................................................................................................................................... 2
1.2 Applications........................................................................................................................................................................ 2
1.3 Features............................................................................................................................................................................. 2
2 TPS40074EVM-001 Electrical Performance Specifications ................................................................................................ 2
3 Schematic ............................................................................................................................................................................... 4
3.1 Adjusting Output Voltage (R5 and R6)............................................................................................................................... 5
3.2 Using Remote Sense (J3).................................................................................................................................................. 5
3.3 5V Input Operation (R10 and R15).................................................................................................................................... 5
4 Test Setup ................................................................................................................................................................................ 6
4.1 Equipment.......................................................................................................................................................................... 6
4.2 Equipment Setup................................................................................................................................................................ 7
4.3 Start-Up/Shutdown Procedure........................................................................................................................................... 8
4.4 Equipment Shutdown......................................................................................................................................................... 8
5 TPS40074EVM Typical Performance Data and Characteristic Curves ............................................................................... 9
5.1 Efficiency............................................................................................................................................................................ 9
5.2 Line and Load Regulation.................................................................................................................................................. 9
6 EVM Assembly Drawings and Layout ................................................................................................................................. 10
7 List of Materials ..................................................................................................................................................................... 13
8 Revision History ................................................................................................................................................................... 14
List of Figures
Figure 3-1. TPS40074EVM-001 Power Stage/Control Schematic Reference Only, See Table 3 for Specific Values................. 4
Figure 4-1. TPS40074EVM-001 Recommended Test Setup....................................................................................................... 7
Figure 4-2. Output Ripple Measurement – Tip and Barrel using TP15 and TP16....................................................................... 8
Figure 5-1. TPS40074EVM-001 Efficiency V
12V_IN
= 10 V–14 V, V
1V5_OUT
= 1.5 V, I
1V5_OUT
= 0 A–15 A................................... 9
Figure 5-2. TPS40074EVM-001 Line and Load Regulation – ±1% Window............................................................................... 9
Figure 6-1. TPS40074EVM-001 Component Placement (Viewed from Top)............................................................................. 10
Figure 6-2. TPS40074EVM-001 Silkscreen (Viewed from Top)................................................................................................. 10
Figure 6-3. TPS40074EVM-001 Top Copper (Viewed from Top)............................................................................................... 11
Figure 6-4. TPS40074EVM-001 Layer 2 (X-Ray View from Top)............................................................................................... 11
Figure 6-5. TPS40074EVM-001 Layer 3 (X-Ray View from Top).............................................................................................. 12
Figure 6-6. TPS40074EVM-001 Bottom Copper (X-Ray View from Top).................................................................................. 12
List of Tables
Table 2-1. TPS40074EVM-001 Electrical and Performance Specifications................................................................................. 2
Table 3-1. Adjusting V
1V5_OUT
With R14...................................................................................................................................... 5
Table 7-1. TPS40074EVM-001 Bill of Materials......................................................................................................................... 13
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SLUU231A – JUNE 2006 – REVISED JANUARY 2022
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