Texas Instruments High-Efficiency, 30-A,Synchronous Buck Converter With Eco-mode Control Scheme TPS53355EVM-743 TPS53355EVM-743 数据表
产品代码
TPS53355EVM-743
User
'
s Guide
SLUU522
–
August 2011
Using the TPS53355EVM-743, High-Efficiency, 30-A,
Synchronous Buck Converter With Eco-mode
™
Control Scheme
The TPS53355EVM-743 evaluation module (EVM) allows users to evaluate the TPS53355. The
TPS53355 is a D-CAP
TPS53355 is a D-CAP
™
mode, 30-A synchronous buck converter with integrated MOSFETs. It provides a
fixed 1.5-V output at up to 30 A from a 12-V input bus.
Contents
1
Description
...................................................................................................................
1.1
Typical Applications
................................................................................................
1.2
Features
.............................................................................................................
2
Electrical Performance Specifications
....................................................................................
3
Schematic
....................................................................................................................
4
Test Setup
...................................................................................................................
4.1
Test Equipment
.....................................................................................................
4.2
Recommended Test Setup
.......................................................................................
5
Configurations
...............................................................................................................
5.1
Switching Frequency Selection
..................................................................................
5.2
Soft-Start Selection
................................................................................................
5.3
Mode Selection
.....................................................................................................
5.4
Enable Selection
...................................................................................................
6
Test Procedure
..............................................................................................................
6.1
Line/Load Regulation and Efficiency Measurement Procedure
..............................................
6.2
Control Loop Gain and Phase Measurement Procedure
.....................................................
6.3
Test Point List
.....................................................................................................
6.4
Equipment Shutdown
............................................................................................
7
Performance Data and Typical Characteristic Curves
................................................................
7.1
Efficiency
..........................................................................................................
7.2
Load Regulation
..................................................................................................
7.3
Line Regulation
...................................................................................................
7.4
Enable Turnon/Turnoff
...........................................................................................
7.5
Output Ripple
.....................................................................................................
7.6
Switching Node
...................................................................................................
7.7
Output Transient With Auto-Skip Mode
........................................................................
7.8
Output Transient With FCCM Mode
...........................................................................
7.9
Output 0.75-V Prebias Turnon
..................................................................................
7.10
Output Overcurrent and Short-Circuit Protection
.............................................................
7.11
Bode Plot
..........................................................................................................
7.12
Thermal Image
....................................................................................................
8
EVM Assembly Drawing and PCB Layout
.............................................................................
9
Bill of Materials
.............................................................................................................
List of Figures
1
TPS53355EVM-743 Schematic
...........................................................................................
2
Tip and Barrel Measurement for VOUT Ripple
.........................................................................
Eco-mode, D-CAP are trademarks of Texas Instruments.
1
SLUU522
–
August 2011
Using the TPS53355EVM-743, High-Efficiency, 30-A, Synchronous Buck
Converter With Eco-mode
™—
Control Scheme
Copyright
©
2011, Texas Instruments Incorporated