
- 制造厂商:TI
- 产品类别:电源管理
- 技术类目:直流/直流开关稳压器 - 降压稳压器
- 功能描述:具有 Eco-Mode 的 4.5V 至 18V 输入,2A 同步降压转换器
- 点击这里打开及下载TPS54228的技术文档资料
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The TPS54228 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54228 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54228 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-Mode™ operation at light loads. Eco-Mode™ allows the TPS54228 to maintain high efficiency during lighter load conditions. The TPS54228 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 7 V. The device also features an adjustable soft start time. The TPS54228 is available in 8-pin SO , 8-pin SOIC, and 10-pin VSON packages, and is designed to operate over the ambient temperature range of –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 7 V
- Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications – 155 mΩ (High-Side) and 108 mΩ (Low-Side)
- High Efficiency, Less than 10 μA at Shutdown
- High Initial Bandgap Reference Accuracy
- Adjustable Soft Start
- Prebiased Soft Start
- 700-kHz Switching Frequency (fSW)
- Cycle-by-Cycle Overcurrent Limit
- Auto-Skip Eco-Mode? for High Efficiency at Light Load
- Vin (Min) (V)
- 4.5
- Vin (Max) (V)
- 18
- Vout (Min) (V)
- 0.76
- Vout (Max) (V)
- 7
- Iout (Max) (A)
- 2
- Iq (Typ) (uA)
- 800
- Switching frequency (Min) (kHz)
- 700
- Switching frequency (Max) (kHz)
- 700
- Features
- Enable, Light Load Efficiency, Synchronous Rectification, Soft Start Adjustable
- Rating
- Catalog
- Regulated outputs (#)
- 1
- Control mode
- D-CAP2
- Duty cycle (Max) (%)
- 65
TPS54228的完整型号有:TPS54228D、TPS54228DDA、TPS54228DDAR、TPS54228DR、TPS54228DRCR、TPS54228DRCT,以下是这些产品的关键参数及官网采购报价:
TPS54228D,工作温度:-40 to 85,封装:SOIC (D)-8,包装数量MPQ:75个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAUAG,TI官网TPS54228D的批量USD价格:.392(1000+)
TPS54228DDA,工作温度:-40 to 85,封装:SO PowerPAD (DDA)-8,包装数量MPQ:75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TPS54228DDA的批量USD价格:.392(1000+)
TPS54228DDAR,工作温度:-40 to 85,封装:SO PowerPAD (DDA)-8,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-2-260C-1 YEAR,引脚镀层/焊球材料:SN,TI官网TPS54228DDAR的批量USD价格:.33(1000+)
TPS54228DR,工作温度:-40 to 85,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:NIPDAUAG,TI官网TPS54228DR的批量USD价格:.33(1000+)
TPS54228DRCR,工作温度:-40 to 85,封装:VSON (DRC)-10,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TPS54228DRCR的批量USD价格:.38(1000+)
TPS54228DRCT,工作温度:-40 to 85,封装:VSON (DRC)-10,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TPS54228DRCT的批量USD价格:.442(1000+)

TPS54228EVM-686 — 用于具有轻载效率的 TPS54228 同步降压转换器的评估模块
TPS54228EVM-686 是一块完全组装且经过测试的电路板,用于评估具有轻载效率的 TPS54228 同步降压转换器。TPS54228EVM-686 由 4.5V 至 18V 输入电压供电,在电流为 2A 时提供 1.05V 的输出电压。TPS54228 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 (...)
PMP4472 — 交流输入、5V/3.3V2A 输出级联电源参考设计
PMP4472 是一款电源参考设计,具有高交流输入、5V 输出和3.3V@2A 的直流隔离输出。它采用了提供 5V 总线电压的高效控制器 UCC28740 和降压转换器 TPS54228。该设计实现了良好的线路和负载调节以及良好的动态响应和低输出纹波电压。






