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TPS54821EVM-049 产品设计参考手册 - TI（德州仪器）
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TI（德州仪器）
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开发套件
描述:
TEXAS INSTRUMENTS TPS54821EVM-049 评估模块, TPS54821EVM-049
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TPS54821EVM-049数据手册
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User's Guide
SLVU479–October 2011
TPS54821EVM-049, 8-A, SWIFT™ Regulator
Evaluation Module
This user’s guide contains information for the TPS54821EVM-049 evaluation module (PWR049) as well as
for the TPS54821 dc/dc converter. Also included are the performance specifications, the schematic, and
the bill of materials for the TPS54821EVM-049.
Contents
1 Introduction .................................................................................................................. 2
2 Test Setup and Results .................................................................................................... 4
3 Board Layout ............................................................................................................... 11
4 Schematic and Bill of Materials .......................................................................................... 14
List of Figures
1 TPS54821EVM-049 Efficiency ............................................................................................ 5
2 TPS54821EVM-049 Low Current Efficiency............................................................................. 5
3 TPS54821EVM-049 Load Regulation.................................................................................... 6
4 TPS54821EVM-049 Line Regulation..................................................................................... 6
5 TPS54821EVM-049 Transient Response ............................................................................... 7
6 TPS54821EVM-049 Loop Response..................................................................................... 7
7 TPS54821EVM-049 Output Ripple ....................................................................................... 8
8 TPS54821EVM-049 Input Ripple ......................................................................................... 8
9 TPS54821EVM-049 Start-Up Relative to V
IN
............................................................................ 9
10 TPS54821EVM-049 Start-Up Relative to Enable....................................................................... 9
11 TPS54821EVM-049 Start-Up Into Pre-Bias............................................................................ 10
12 TPS54821EVM-049 Hiccup-Mode Current Limit...................................................................... 10
13 TPS54821EVM-049 Top-Side Assembly............................................................................... 11
14 TPS54821EVM-049 Top-Side Layout .................................................................................. 12
15 TPS54821EVM-049 Internal Layer-1 Layout .......................................................................... 12
16 TPS54821EVM-049 Internal Layer-2 Layout .......................................................................... 13
17 TPS54821EVM-049 Bottom-Side Layout .............................................................................. 13
18 TPS54821EVM-049 Schematic.......................................................................................... 14
List of Tables
1 Input Voltage and Output Current Summary ............................................................................ 2
2 TPS54821EVM-049 Performance Specification Summary............................................................ 2
3 Output Voltages Available ................................................................................................. 3
4 EVM Connectors and Test Points ........................................................................................ 4
5 TPS54821EVM-049 Bill of Materials.................................................................................... 15
SWIFT is a trademark of Texas Instruments.
1
SLVU479– October 2011 TPS54821EVM-049, 8-A, SWIFT™ Regulator— Evaluation Module
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