Texas Instruments TPS40400, Руководство пользователя

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User’s Guide
TPS40400 Buck Controller Evaluation Module User's
Guide
Table of Contents
1 Introduction ............................................................................................................................................................................. 2
2 Description .............................................................................................................................................................................. 3
2.1 Typical Applications............................................................................................................................................................ 3
2.2 Features............................................................................................................................................................................. 3
3 Electrical Performance Specifications ................................................................................................................................. 4
4 Schematic ................................................................................................................................................................................ 5
5 Test Setup ................................................................................................................................................................................ 6
5.1 Test and Configuration Software........................................................................................................................................ 6
5.2 Test Equipment.................................................................................................................................................................. 7
5.3 Recommended Test Setup................................................................................................................................................. 8
5.4 USB Interface Adapter and Cable...................................................................................................................................... 9
6 EVM Configuration Using the Fusion GUI .......................................................................................................................... 11
6.1 Configuration Procedure................................................................................................................................................... 11
6.2 Fusion GUI Screenshots.................................................................................................................................................. 11
7 Test Procedure ...................................................................................................................................................................... 14
7.1 Line/Load Regulation and Efficiency Measurement Procedure....................................................................................... 14
7.2 Control Loop Gain and Phase Measurement Procedure................................................................................................. 14
7.3 List of Test Points............................................................................................................................................................. 15
7.4 Equipment Shutdown....................................................................................................................................................... 15
8 Performance Data and Typical Characteristic Curves ...................................................................................................... 16
8.1 Efficiency.......................................................................................................................................................................... 16
8.2 Load Regulation............................................................................................................................................................... 16
8.3 Load Transients 1............................................................................................................................................................. 17
8.4 Load Transient 2.............................................................................................................................................................. 17
8.5 Load Transient 3.............................................................................................................................................................. 18
8.6 Input and Output Ripple................................................................................................................................................... 18
8.7 Switch Node and HDRV................................................................................................................................................... 19
8.8 V
IN
Turn On...................................................................................................................................................................... 19
8.9 Enable ON / OFF............................................................................................................................................................. 20
8.10 Turn ON with 92% (1.1V) Pre-bias................................................................................................................................. 21
8.11 TPS40400EVM-351 Bode Plot (20-A output)................................................................................................................. 21
9 EVM Assembly Drawing and PCB Layout .......................................................................................................................... 22
10 List of Materials .................................................................................................................................................................. 26
11 Revision History .................................................................................................................................................................. 27
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SLUU535A – SEPTEMBER 2011 – REVISED JANUARY 2022
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TPS40400 Buck Controller Evaluation Module User's Guide 1
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