Texas Instruments TPS53127 Dual Synchronous Step-Down Controller Evaluation Module TPS53127EVM-614 TPS53127EVM-614 Scheda Tecnica
Codici prodotto
TPS53127EVM-614
User's Guide
SLVU434 – February 2011
TPS53127EVM-614
The TPS53127EVM-614 Dual Output BUCK presents an easy to use reference design for a common dual
output power supply using the TPS53127 controller in cost sensitive applications.
output power supply using the TPS53127 controller in cost sensitive applications.
Contents
1
Introduction
..................................................................................................................
1.1
Description
..........................................................................................................
1.2
Application
..........................................................................................................
1.3
Features
.............................................................................................................
2
Electrical Performance Specifications
....................................................................................
3
TPS53127EVM-614 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
Equipment Setup
...................................................................................................
5.3
Start Up/Shut Down Procedure
..................................................................................
5.4
Output Ripple Voltage Measurement Procedure
..............................................................
5.5
Equipment Shutdown
..............................................................................................
6
TPS53127EVM-614 Test Data
............................................................................................
6.1
Efficiency
..........................................................................................................
6.2
Line and Load Regulation
.......................................................................................
6.3
Output Voltage Ripple and Switching Node waveforms
.....................................................
6.4
Switch Node
.......................................................................................................
7
TPS53127EVM-614 EVM Assembly Drawings and Layout
..........................................................
8
Bill of Materials
.............................................................................................................
List of Figures
1
TPS53127EVM-614 Schematic
...........................................................................................
2
Tip and Barrel Measurement for Output Voltage Ripple
...............................................................
3
TPS53127EVM-614 Recommended Test Setup
.......................................................................
4
Efficiency vs Load (V
IN
= 8 V–22 V, V
OUT1
= 1.05 V, I
OUT1
- 0 A–4A)
.................................................
5
Efficiency vs Load (V
IN
= 8 V–22 V, V
OUT2
= 1.8 V, I
OUT2
- 0 A–4A)
..................................................
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
= 1.05 V, I
OUT2
= 0 A–4 A)
.........................................
8
Output Voltage Ripple (V
IN
= 12 V, V
OUT1
= 1.05 V, I
OUT1
= 4 A)
......................................................
9
Output Voltage Ripple (V
IN
= 12 V, V
OUT2
= 1.8 V, I
OUT2
= 4 A)
.......................................................
10
Switching Waveform (V
IN
= 12 V, V
OUT1
= 1.05 V, I
OUT1
= 4 A)
.......................................................
11
Switching Waveform (V
IN
= 12 V, V
OUT2
= 1.8 V, I
OUT2
= 4 A)
.........................................................
12
Top Assembly
..............................................................................................................
13
Bottom Assembly
..........................................................................................................
14
Top Layer
...................................................................................................................
15
Bottom Layer
...............................................................................................................
1
SLVU434 – February 2011
TPS53127EVM-614
© 2011, Texas Instruments Incorporated