Texas Instruments Evaluation Module Board for TPS61252 3.5MHz, 1.5A, 92% Efficient Step-up (Boost) Converter TPS61252EVM TPS61252EVM-667 Datenbogen
Produktcode
TPS61252EVM-667
Introduction
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11
TPS61252 EVM Top Copper (Viewed from Top)
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TPS61252 EVM Bottom Copper (Viewed from Bottom)
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List of Tables
1
TPS61252 EVM Electrical and Performance Specifications
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2
TPS61252 EVM Bill of Materials
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1
Introduction
The TPS61252 device provides a power supply solution for products powered by either a three-cell
alkaline, NiCd or NiMH battery, or a one-cell Li-Ion or Li-polymer battery. The wide input voltage range is
ideal to power portable applications like mobile phones or computer peripherals. The device has a resistor
programmable (RILIM) input current limit and is suitable for a wide variety of applications.
alkaline, NiCd or NiMH battery, or a one-cell Li-Ion or Li-polymer battery. The wide input voltage range is
ideal to power portable applications like mobile phones or computer peripherals. The device has a resistor
programmable (RILIM) input current limit and is suitable for a wide variety of applications.
1.1
Requirements
The TPS61252 EVM is designed to operate over the full input voltage range and produces an output
voltage of 5.0 V. The output voltage can be adjusted by changing the feedback resistor divider network.
voltage of 5.0 V. The output voltage can be adjusted by changing the feedback resistor divider network.
In order to operate this EVM, only a DC power supply capable of delivering between 2.3 V and 6.0 V at up
to 500 mA is necessary.
to 500 mA is necessary.
1.2
Applications
•
USB Host Supplies from a Single Li-Ion Battery
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Current Limited Applications
•
Li-Ion Applications
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Audio Applications
•
RF-PA Buffers
1.3
Features
•
Resistor Programmable Input Current Limit
–
±20% Current Accuracy at 500 mA over Full Temperature Range
–
Programmable from 100 mA up to 1500 mA
•
Up to 92% Efficiency
•
V
IN
Range from 2.3 V to 6.0 V
•
Power Good Indicates the Appropriate Output Voltage Level
•
Adjustable Output Voltage up to 6.5 V
•
100% Duty-Cycle Mode When V
IN
> V
OUT
•
Load Disconnect and Reverse Current Protection
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Double-sided, two-active-layer PCB with all components on top side
•
Active converter area of approximately 60 mm
2
2
TPS61252 Evaluation Module
SLVU408 – October 2010
Copyright © 2010, Texas Instruments Incorporated