TPS62740EVM-186 Datasheet, PDF (1/14 Pages) Texas Instruments – TPS62740EVM-186 Evaluation Module

User's Guide
SLVU949 – November 2013
TPS62740EVM-186 Evaluation Module
This user’s guide describes the characteristics, operation, and use of the Texas Instruments TPS62740
evaluation module (EVM). This EVM is designed to help the user easily evaluate and test the operation
and functionality of the TPS62740. The EVM converts a 2.2-V to 5.5-V input voltage to a regulated output
voltage that is set between 1.8 V and 3.3 V at up to 300 mA. The TPS62740 also includes a load switch
and power good output, while having an ultra-low quiescent current of 360 nA. This user’s guide includes
setup instructions for the hardware, a printed-circuit board layout for the EVM, a schematic diagram, a bill
of materials, and test results for the EVM.
Contents
1 Introduction .................................................................................................................. 1
2 Setup ......................................................................................................................... 3
3 Common Efficiency Measurement Errors with Ultra-Low Iq Devices ................................................ 4
4 TPS62740EVM-186 Test Results ......................................................................................... 5
5 Board Layout ................................................................................................................ 6
6 Schematic and Bill of Materials ........................................................................................... 8
List of Figures
1 Loop Response Measurement Modification ............................................................................. 3
2 Assembly Layer ............................................................................................................. 6
3 Top Silk Layer ............................................................................................................... 6
4 Top Layer .................................................................................................................... 7
5 Bottom Layer ................................................................................................................ 7
6 TPS62740EVM-186 Schematic ........................................................................................... 8
List of Tables
1 Performance Specification Summary..................................................................................... 2
2 Output Voltage Settings.................................................................................................... 4
3 TPS62740EVM-186 Bill of Materials ..................................................................................... 9
1 Introduction
The TPS62740 is a 300-mA, synchronous, step-down converter in a 2 x 3-mm, 10-pin SON package. The
output voltage is fixed inside the device by the connection of the four VSELx pins.
1.1 Background
The TPS62740EVM-186 (PWR186-001) uses the TPS62740 device. The EVM operates with full-rated
performance with an input voltage between 2.2 V and 5.5 V.
SLVU949 – November 2013
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