The TPS54226 is a adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54226 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 TPS54226 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components. The adoptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency Eco-Mode operation at light load for high efficiency. The TPS54226 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 VCC input, and from 2-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54226 is available in the 14 pin HTSSOP or 16 pin QFN 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 VCC Input Voltage Range: 4.5 V to 18 V
• Wide VIN Input Voltage Range: 2 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 – 160 mΩ (High Side) and 110 mΩ (Low Side)
• High Efficiency, less than 10 μA at shutdown
• Auto-Skip Eco-Mode? for High Efficiency at Light Load
• 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
• Auto-Skip Mode
• 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)

Eco-Mode Is a trademark of Texas Instruments PowerPAD Is a trademark of Texas Instruments

• Vin (Min) (V)
• 4.5
• Vin (Max) (V)
• 18
• Vout (Min) (V)
• 0.76
• Vout (Max) (V)
• 5.5
• Iout (Max) (A)
• 2
• Iq (Typ) (uA)
• 800
• Switching frequency (Min) (kHz)
• 700
• Switching frequency (Max) (kHz)
• 700
• Features
• Enable, Light Load Efficiency, Power Good, Synchronous Rectification, Soft Start Adjustable
• Rating
• Catalog
• Regulated outputs (#)
• 1
• Control mode
• D-CAP2
• Duty cycle (Max) (%)
• 90

TPS54226的完整型号有：HPA011146RGTR、TPS54226PWP、TPS54226PWPR、TPS54226RGTR、TPS54226RGTT，以下是这些产品的关键参数及官网采购报价：

HPA011146RGTR，工作温度：-40 to 85，封装：VQFN (RGT)-16，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：-，引脚镀层/焊球材料：-，TI官网HPA011146RGTR的批量USD价格：.655（1000+）

TPS54226PWP，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TPS54226PWP的批量USD价格：.772（1000+）

TPS54226PWPR，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TPS54226PWPR的批量USD价格：.655（1000+）

TPS54226RGTR，工作温度：-40 to 85，封装：VQFN (RGT)-16，包装数量MPQ：3000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TPS54226RGTR的批量USD价格：.655（1000+）

TPS54226RGTT，工作温度：-40 to 85，封装：VQFN (RGT)-16，包装数量MPQ：250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TPS54226RGTT的批量USD价格：.772（1000+）

TPS54226EVM-539 — TPS54226 降压 DCAP2 模式转换器评估模块

TPS54226EVM-539 是一款组装完备且经过测试的电路，用于评估 TPS54428 同步降压转换器。TPS54226EVM-539 在 4.5V 至 18V 输入电压范围内运行，且可在最高 2A 的电流下提供 1.05V 的输出电压。TPS54226 的主控制环路采用 D-CAP2™ 模式控制，无需在相位补偿中使用外部组件即可实现超快的瞬态响应。该解决方案还具有可调软启动特性且集成了电源正常指示功能，因此灵活性很高。

TPS54226 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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