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.

• Qualified for Automotive Applications
• Wide Input Voltage Range: 5.5 V to 36 V
• Up to 2-A Continuous (3-A Peak) Output Current
• High Efficiency up to 95% Enabled by 110-m 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 Over Current Limiting, Over Voltage Protection, and Thermal Shutdown
• –40°C to 125°C Operating Junction Temperature Range
• Available in Small 8-Pin SOIC Package
• For SWIFT? Documentation, Application Notes and Design Software, See the TI Website at www.ti.com/swift
• APPLICATIONS
  • Industrial and Car Audio Power Supplies
  • Battery Chargers, High-Power LED Supplies
  • 12-V/24-V Distributed Power Systems

SWIFT is a trademark of Texas Instruments.

• Vin (Min) (V)
• 5.5
• Vin (Max) (V)
• 36
• Vout (Min) (V)
• 1.23
• Vout (Max) (V)
• 31
• Iout (Max) (A)
• 2
• Iq (Typ) (uA)
• 3000
• Switching frequency (Min) (kHz)
• 500
• Switching frequency (Max) (kHz)
• 500
• Features
• Enable, Over Current Protection, Soft Start Fixed
• Rating
• Automotive
• Regulated outputs (#)
• 1
• Control mode
• Voltage Mode
• Duty cycle (Max) (%)
• 89

TPS5420-Q1的完整型号有：TPS5420QDRQ1，以下是这些产品的关键参数及官网采购报价：

TPS5420QDRQ1，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS5420QDRQ1的批量USD价格：1.634（1000+）

TPS5420 PSpice Transient Model

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)