Texas Instruments Evaluation Module for TPS61251 3.5MHz, 1.5A Current Limit, 92% Efficient Boost Converter TPS61251EVM-5 TPS61251EVM-517 데이터 시트
제품 코드
TPS61251EVM-517
Introduction
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TPS61251 Startup With no Load
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TPS61251 Startup With Full Load
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TPS61251 EVM Component Placement (Viewed from Top)
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TPS61251 EVM Top Copper (Viewed from Top)
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TPS61251 EVM Bottom Copper (Viewed from Bottom)
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List of Tables
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TPS61251 EVM Electrical and Performance Specifications
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HPA517A Bill of Material
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1
Introduction
The TPS61251 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) average 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) average input current limit and is suitable for a wide variety of applications.
1.1
Requirements
The TPS61251 EVM is designed to operate over the full input voltage range and produces an output
voltage of 5.5 V. The output voltage can be adjusted by changing the feedback resistor divider network.
voltage of 5.5 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
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USB Host Supplies from a Single Li-Ion Battery
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Current Limited Applications
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Li-Ion Applications
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Audio Applications
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RF-PA Buffers
1.3
Features
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Resistor Programmable Input Current Limit
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±20% Current Accuracy at 500 mA Over Full Temperature Range
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Programmable from 100 mA up to 1500 mA
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Up to 92% Efficiency
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V
IN
Range from 2.3 V to 6.0 V
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Power Good Indicates the Appropriate Output Voltage Level
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Adjustable Output Voltage up to 6.5 V
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100% Duty-Cycle Mode When V
IN
> V
OUT
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Load Disconnect and Reverse Current Protection
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Double-sided, two-active-layer PCB with all components on top side
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Active converter area of approximately 60 mm
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TPS61251 Evaluation Module
SLVU409 – October 2010
Copyright © 2010, Texas Instruments Incorporated