Texas Instruments TPS62120 Evaluation Module TPS62120EVM-640 TPS62120EVM-640 数据表
产品代码
TPS62120EVM-640
User's Guide
SLVU411 – September 2010
TPS62120EVM
This user’s guide describes the characteristics, operation, and use of the TPS62120 evaluation module
(EVM). The TPS62120EVM-640 is a fully assembled and tested circuit for evaluating the performance of
the
(EVM). The TPS62120EVM-640 is a fully assembled and tested circuit for evaluating the performance of
the
high-input voltage step-down converter. This document includes schematic diagrams, a
printed circuit board (PCB) layout, bill of materials, and test data. Throughout this document, the
abbreviation EVM and the term evaluation module are synonymous with the TPS62120EVM-640 unless
otherwise noted.
abbreviation EVM and the term evaluation module are synonymous with the TPS62120EVM-640 unless
otherwise noted.
Contents
1
Introduction
..................................................................................................................
1.1
Features
.............................................................................................................
1.2
Applications
.........................................................................................................
2
TPS62120EVM Schematic
................................................................................................
3
Connector and Test Point Descriptions
..................................................................................
3.1
Enable Jumpers/Switches (RefDes) TPS62120
...............................................................
4
Test Configuration
..........................................................................................................
4.1
Hardware Setup
....................................................................................................
4.2
Procedure
...........................................................................................................
5
TPS62120EVM Test Data
.................................................................................................
5.1
Efficiency
............................................................................................................
5.2
Start-Up
.............................................................................................................
5.3
Load Transient Response
........................................................................................
5.4
Typical Operation, 60 mA
.........................................................................................
5.5
Typical Operation, 10 mA
.........................................................................................
5.6
Current Limit Operation
...........................................................................................
6
TPS62120EVM Assembly Drawings and Layout
......................................................................
7
Bill of Materials
.............................................................................................................
List of Figures
1
TPS62120EVM Schematic
................................................................................................
2
Hardware Board Connection
..............................................................................................
3
EFFICIENCY vs INPUT VOLTAGE V
IN
(V
OUT
= 3.0V)
..................................................................
4
TPS62120EVM Efficiency versus Load Current
........................................................................
5
TPS62120EVM Startup into 300-
Ω
Load(V
IN
= 8.0 V, V
OUT
= 3.0 V)
.................................................
6
TPS62120EVM Start-Up from a High-Impedance Source(V
IN
= 12.0 V, V
OUT
= 3.0 V)
............................
7
Power Good Output During Start-Up
.....................................................................................
8
Output Discharge with SGND Pin Connected to VOUT
...............................................................
9
TPS62120 Load Transient Response(V
IN
= 8.0 V, V
OUT
= 1.8 V)
.....................................................
10
TPS62120EVM Output Ripple, 60-mA Load(V
IN
= 8.0 V, V
OUT
= 3.0 V)
.............................................
11
TPS62120EVM Output Ripple, 10-mA Load(V
IN
= 8.0 V, V
OUT
= 3.0 V)
.............................................
12
Current Limit Operation
....................................................................................................
13
TPS62120EVM Component Placement (Top View)
..................................................................
14
TPS62120EVM Top-Side Copper (Top View)
.........................................................................
15
TPS62120EVM Bottom-Side Copper (Bottom View)
.................................................................
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1
SLVU411 – September 2010
TPS62120EVM
Copyright © 2010, Texas Instruments Incorporated