TPS5420-Q1中文资料汽车类 5.5V 至 36V、500kHz 固定频率双路 2A 降压转换器数据手册TI规格书

描述 Description

As a member of the SWIFT family of dc/dc regulators, the TPS5420 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 is 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 5.5 V, 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, overvoltage protection, and thermal shutdown. To reduce design complexity and external component count, the TPS5420 feedback loop is internally compensated. The TPS5420 device is available in an easy-to-use 8-pin SOIC package. TI provides evaluation modules and the SWIFT Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

特性 Features

• Qualified for Automotive Applications
• Up to 2-A Continuous (3-A Peak) Output Current
• Wide Output Voltage Range: Adjustable Down to 1.22 V With 1.5% Initial Accuracy
• Fixed 500-kHz Switching Frequency for Small Filter Size
• System Protected by Over Current Limiting, Over Voltage Protection, and Thermal Shutdown
• Available in Small 8-Pin SOIC Package
• APPLICATIONS
• Battery Chargers, High-Power LED Supplies
• 12-V/24-V Distributed Power Systems

SWIFT is a trademark of Texas Instruments.