Texas Instruments TPS53125EVM-599 - Manual

User's Guide
SLVU392 – July 2010
TPS53125EVM-599
The TPS53125EVM-599 Evaluation Module presents an easy-to-use reference design for a common dual
output power supply using the TPS53125 controller in cost-sensitive applications. Also included are the
schematic, board layout, and bill of materials.
Contents
1 Description ................................................................................................................... 2
1.1 Applications
.........................................................................................................
2
1.2 Features ............................................................................................................. 2
2 TPS53125EVM-599 Electrical Performance Specifications ........................................................... 2
3 TPS53125EVM-599 Schematic
...........................................................................................
3
4 Connector and Test Point Descriptions .................................................................................. 4
4.1 Enable Jumpers/Switches –SW1 and SW2
....................................................................
4
4.2 Test Point Descriptions ............................................................................................ 4
5 Test Setup ................................................................................................................... 5
5.1 Equipment
...........................................................................................................
5
5.2 Equipment Setup ................................................................................................... 6
5.3 Start-Up/Shutdown Procedures
..................................................................................
7
5.4 Output Ripple Voltage Measurement Procedure .............................................................. 8
5.5 Equipment Shutdown .............................................................................................. 8
6 TPS53125EVM-599 Test Data
............................................................................................
8
6.1 Efficiency ............................................................................................................ 8
6.2 Line and Load Regulation ......................................................................................... 9
6.3 Output Voltage Ripple and Switching Node Waveforms .................................................... 10
6.4 Switch Node ....................................................................................................... 11
7 TPS53125EVM-599 Assembly Drawings and Layout
................................................................
12
8 TPS53125EVM-599 Bill of Materials .................................................................................... 15
List of Figures
1 TPS53125EVM-599 Schematic ........................................................................................... 3
2 TPS53125EVM-599 Recommended Test Setup ....................................................................... 7
3 TPS53125EVM-599 Efficiency vs Load Current
........................................................................
8
4 TPS53125EVM-599 Efficiency vs Load Current ........................................................................ 9
5 TPS53125EVM-599 Output Voltage vs Load Current ................................................................. 9
6 TPS53125EVM-599 Output Voltage vs Load Current ................................................................ 10
7 TPS53125EVM-599 Output Voltage Ripple and Switching Waveform ............................................. 10
8 TPS53125EVM-599 Output Voltage Ripple
............................................................................
11
9 TPS53125EVM-599 Switching Waveforms ............................................................................ 11
10 TPS53125EVM-599 Switching Waveforms ............................................................................ 12
11 TPS53125EVM-599 Component Placement, Viewed From Top .................................................... 12
12 TPS53125EVM-599 Top Copper, Viewed From Top ................................................................. 13
13 TPS53125EVM-599 Bottom Copper, Viewed From Bottom
.........................................................
13
14 TPS53125EVM-599 Internal 1, X-Ray View From Top ............................................................... 14
15 TPS53125EVM-599 Internal 2, X-Ray View From Top ............................................................... 14
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1 SLVU392 – July 2010 TPS53125EVM-599
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