Texas Instruments TPS53126 Dual Synchronous Step-Down Controller Evaluation Module TPS53126EVM-600 TPS53126EVM-600 Scheda Tecnica
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TPS53126EVM-600
User's Guide
SLVU435 – February 2011
TPS53126EVM-600
The TPS53126EVM-600 Evaluation Module presents an easy-to-use reference design for a common,
dual-output power supply using the TPS53126 controller in cost-sensitive applications.
dual-output power supply using the TPS53126 controller in cost-sensitive applications.
Contents
1
Introduction
..................................................................................................................
1.1
Description
..........................................................................................................
1.2
Applications
.........................................................................................................
1.3
Features
.............................................................................................................
2
Electrical Performance Specifications
....................................................................................
3
Schematic
....................................................................................................................
4
Connector and Test Point Descriptions
..................................................................................
4.1
Enable Switches – SW1 and SW2
...............................................................................
4.2
Switching Frequency Select Switch – SW3
....................................................................
4.3
Test Point Descriptions
............................................................................................
5
Test Setup
...................................................................................................................
5.1
Equipment
...........................................................................................................
5.2
Recommended Setup
.............................................................................................
6
Test Procedure
..............................................................................................................
6.1
Start-up Procedure
.................................................................................................
6.2
Line/Load Regulation and Efficiency Measurement Procedure
............................................
6.3
Output Ripple Voltage Measurement Procedure
.............................................................
6.4
Shutdown Procedure
.............................................................................................
7
Performance Data and Typical Characteristic Curves
................................................................
7.1
Efficiency
..........................................................................................................
7.2
Line and Load Regulation
.......................................................................................
7.3
Output Voltage Ripple
...........................................................................................
7.4
Switch Node Waveforms
........................................................................................
8
EVM Assembly Drawings and Layout
..................................................................................
9
Bill of Materials
.............................................................................................................
List of Figures
1
TPS53126EVM-600 Schematic
...........................................................................................
2
Tip and Barrel Measurement for Output Voltage Ripple
...............................................................
3
TPS53126EVM-600 Recommended Test Setup
.......................................................................
4
Efficiency vs Load (V
IN
= 8 V–22 V, V
OUT1
= 1.05 V, I
OUT1
= 0 A–4 A)
...............................................
5
Efficiency vs Load (V
IN
= 8 V–22 V, V
OUT2
= 1.8 V, I
OUT2
= 0 A–4 A)
.................................................
6
Output Voltage vs Load (V
IN
= 8 V–22 V, V
OUT1
= 1.05 V, I
OUT1
= 0 A–4 A)
.........................................
7
Output Voltage vs Load (V
IN
= 8 V–22 V, V
OUT2
= 1.8 V, I
OUT2
= 0 A–4 A)
..........................................
8
Output Voltage Ripple (V
IN
= 12 V, V
OUT1
= 1.05 V, I
OUT1
= 4 A, F
SW
= 350 kHz)
...................................
9
Output Voltage Ripple (V
IN
= 12 V, V
OUT2
= 1.8 V, I
OUT2
= 4 A, F
SW
= 350 kHz)
....................................
10
Switching Waveform (V
IN
= 12 V, V
OUT1
= 1.05 V, I
OUT1
= 4 A, F
SW
= 350 kHz)
.....................................
11
Switching Waveform (V
IN
= 12 V, V
OUT2
= 1.08 V, I
OUT2
= 4 A, F
SW
= 350 kHz)
.....................................
12
Top Assembly
..............................................................................................................
13
Bottom Assembly
..........................................................................................................
1
SLVU435 – February 2011
TPS53126EVM-600
© 2011, Texas Instruments Incorporated