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User's Guide
SLVU671–February 2012
TLV61220EVM-120, Low-Input Voltage, Step-Up Converter
Evaluation Module
This user’s guide describes the characteristics, operation, and use of the TLV61220EVM-120 evaluation
module (EVM). This EVM demonstrates the Texas Instruments TLV61220 synchronous boost converter.
The input voltage range of the TLV61220 is 0.7 V to 5.5 V, allowing the device to operate from one-cell to
three-cell battery configurations in addition to a single-cell Li-ion battery. This user’s guide includes setup
instructions, schematic diagram, bill of materials, and printed-circuit board layout drawings for the EVM.
Contents
1 Introduction .................................................................................................................. 2
2 Setup ......................................................................................................................... 2
2.1 Input and Output Connections and Jumper Descriptions ..................................................... 2
2.2 Modifications ........................................................................................................ 2
3 Operation ..................................................................................................................... 3
4 Test Results ................................................................................................................. 3
4.1 Continuous-Current Mode Operation ............................................................................ 3
4.2 Start-Up After Enable .............................................................................................. 4
4.3 Load Transient ..................................................................................................... 5
4.4 Efficiency ............................................................................................................ 5
5 Board Layout ................................................................................................................ 6
5.1 Layout Description ................................................................................................. 6
6 Schematic .................................................................................................................... 7
7 Bill of Materials .............................................................................................................. 8
List of Figures
1 Continuous-Current Operation, TLV61220EVM ........................................................................ 3
2 Discontinuous-Current Operation, TLV61220EVM ..................................................................... 4
3 Start-Up After Enable ...................................................................................................... 4
4 Load Transient .............................................................................................................. 5
5 TLV61220 Efficiency........................................................................................................ 5
6 Top Silk....................................................................................................................... 6
7 Top Layer .................................................................................................................... 6
8 Bottom Layer ................................................................................................................ 7
9 Schematic.................................................................................................................... 7
List of Tables
1 Changing Output Voltage With R1 and R2.............................................................................. 2
2 Bill of Materials.............................................................................................................. 8
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SLVU671–February 2012 TLV61220EVM-120, Low-Input Voltage, Step-Up Converter Evaluation
Module
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