TPS5431 - 5.5V 至 23V 输入、3A、500kHz 降压转换器

TPS5431是TI德州仪器公司的一款转换器（集成开关）产品，TPS5431是5.5V 至 23V 输入、3A、500kHz 降压转换器，本站介绍了TPS5431的封装应用图解、特点和优点、功能等，并给出了与TPS5431相关的TI元器件型号供参考。

TPS5431 - 5.5V 至 23V 输入、3A、500kHz 降压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品特性

Wide Input Voltage Range:
- TPS5430: 5.5 V to 36 V
- TPS5431: 5.5 V to 23 V
Up to 3-A Continuous (4-A Peak) Output Current
High Efficiency up to 95% Enabled by 110-mΩ Integrated MOSFET Switch
Wide Output Voltage Range: Adjustable Down to 1.22 V with 1.5% Initial Accuracy
Internal Compensation Minimizes External Parts Count
Fixed 500 kHz Switching Frequency for Small Filter Size
Improved Line Regulation and Transient Response by Input Voltage Feed Forward
System Protected by Overcurrent Limiting, Overvoltage Protection and Thermal Shutdown
–40°C to 125°C Operating Junction Temperature Range
Available in Small Thermally Enhanced 8-Pin SO PowerPAD™ Package

产品应用

Consumer: Set-top Box, DVD, LCD Displays
Industrial and Car Audio Power Supplies
Battery Chargers, High Power LED Supply
12-V/24-V Distributed Power Systems

产品说明

The TPS543x is a high-output-current PWM converter that integrates a low-resistance, high-side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 μA typically. Other features include an active-high enable, overcurrent limiting, over-voltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS543x feedback loop is internally compensated. The TPS5431 is intended to operate from power rails up to 23 V. The TPS5430 regulates a wide variety of power sources including 24 V bus.

The TPS543x device is available in a thermally enhanced, easy to use 8-pin SOIC PowerPAD™ package. TI provides evaluation modules and the Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

产品器件信息

PART NUMBER	PACKAGE	INPUT VOLTAGE
TPS5430	HSOP (8)	5.5 V to 36 V
TPS5431	HSOP (8)	5.5 V to 23 V

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