User's Guide
SLVU147A – February 2006 – Revised March 2006
Using the TPS40200
The
TPS40200EVM-001
evaluation
module
(EVM)
uses
the
TPS40200
nonsynchronous buck converter to provide a resistor-selected 3.3-V output voltage that
delivers up to 2.5 A from a 12-V input bus. The EVM operates from a single supply and
uses a single P-channel power FET and Schottky diode to produce a low-cost buck
converter. The part operates at a 300-kHz clock frequency with provision for external
frequency synchronization.
Contents
1
Description
...........................................................................................
2
2
TPS40200EVM-001 Electrical and Performance Specifications
.............................
2
3
Schematic
...........................................................................................
3
4
Test Setup
...........................................................................................
4
5
TPS40200EVM Typical Performance Data and Characteristic Curves
.....................
7
6
EVM Assembly Drawings and Layout
...........................................................
9
7
List of Materials
....................................................................................
14
List of Figures
1
TPS40200EVM-001 Schematic
...................................................................
3
2
TPS40200 Synchronized to a 50% Duty Cycle External Clock
..............................
4
3
TPS40200EVM-001 Recommended Test Setup
...............................................
6
4
Output Ripple Measurement - Tip and Barrel Using TP14 and TP15
.......................
6
5
TPS40200EVM-001 Efficiency
....................................................................
7
6
TPS40200EVM-001 Efficiency
....................................................................
8
7
TPS40200EVM-001 Line and Load Regulation – Vout = 3.3255 V
..........................
8
8
TPS40200EVM-001 Line and Load Regulation – Vout = 5.0665 V
.........................
9
9
TPS40200EVM-001 Component Placement (Viewed from Top)
...........................
10
10
TPS40200EVM-001 Silkscreen (Viewed from Top)
..........................................
11
11
TPS40200EVM-001 Top View
..................................................................
12
12
TPS40200EVM-001 Bottom View
...............................................................
13
List of Tables
1
Adjusting V
OUT
With R6 Rounded to Standard 1% Resistor Values
.........................
3
2
TPS40200EVM-001 Bill of Materials
...........................................................
14
SLVU147A – February 2006 – Revised March 2006
Using the TPS40200
1
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