The TPS54425 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54425 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54425 uses the D-CAP2 mode control which provides a very fast transient response with no external compensation components. The TPS54425 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable soft start time and a power good function. The TPS54425 is available in the 14-pin HTSSOP package, and designed to operate from –40°C to 85°C.

• D-CAP2? Mode Enables Fast Transient Response
• Low Output Ripple and Allows Ceramic Output Capacitor
• Wide VIN Input Voltage Range: 4.5 V to 18 V
• Output Voltage Range: 0.76 V to 5.5 V
• Highly Efficient Integrated FET’s Optimized for Lower Duty Cycle Applications – 65 mΩ (High Side) and 55 mΩ (Low Side)
• High Efficiency, less than 10 μA at shutdown
• High Initial Bandgap Reference Accuracy
• Adjustable Soft Start
• Pre-Biased Soft Start
• 700-kHz Switching Frequency (fSW)
• Cycle By Cycle Over Current Limit
• Power Good Output
• APPLICATIONS
  • Wide Range of Applications for Low Voltage System
    • Digital TV Power Supply
    • High Definition Blu-ray Disc Players
    • Networking Home Terminal
    • Digital Set Top Box (STB)

• Vin (Min) (V)
• 4.5
• Vin (Max) (V)
• 18
• Vout (Min) (V)
• 0.76
• Vout (Max) (V)
• 5.5
• Iout (Max) (A)
• 4
• Iq (Typ) (uA)
• 850
• Switching frequency (Min) (kHz)
• 700
• Switching frequency (Max) (kHz)
• 700
• Features
• Enable, Power Good, Synchronous Rectification, Soft Start Adjustable
• Rating
• Catalog
• Regulated outputs (#)
• 1
• Control mode
• D-CAP2
• Duty cycle (Max) (%)
• 90

TPS54425的完整型号有：TPS54425PWP、TPS54425PWPR，以下是这些产品的关键参数及官网采购报价：

TPS54425PWP，工作温度：-40 to 85，封装：HTSSOP (PWP)-14，包装数量MPQ：90个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS54425PWP的批量USD价格：0.929（1000+）

TPS54425PWPR，工作温度：-40 to 85，封装：HTSSOP (PWP)-14，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS54425PWPR的批量USD价格：0.774（1000+）

TPS54425EVM-608 — 用于 TPS54425 4.5V 至 18V 输入、4A 同步降压转换器的评估模块

TPS54425EVM-608 是一块完全组装且经过测试的电路板，用于评估 TPS54425 同步降压 SWIFT 转换器。TPS54425EVM-608 由 4.5V 至 18V 输入电压供电，在电流为 4A 时提供 1.05V 的输出电压。

TPS54425 Unencrypted PSpice Transient Model Package (Rev. A)

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 (...)

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