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TPS54428DRCT PDF预览

TPS54428DRCT

更新时间： 2024-11-09 11:08:07
品牌 Logo 应用领域
德州仪器 - TI 开关控制器开关式稳压器开关式控制器电源电路转换器开关式稳压器或控制器
页数 文件大小 规格书
22页 844K
描述
具有 Eco-Mode™ 的 4.5V 至 18V 输入、4A SWIFT™ 同步降压转换器 | DRC | 10 | -40 to 85

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TPS54428DRCT 数据手册

 浏览型号TPS54428DRCT的Datasheet PDF文件第2页浏览型号TPS54428DRCT的Datasheet PDF文件第3页浏览型号TPS54428DRCT的Datasheet PDF文件第4页浏览型号TPS54428DRCT的Datasheet PDF文件第5页浏览型号TPS54428DRCT的Datasheet PDF文件第6页浏览型号TPS54428DRCT的Datasheet PDF文件第7页 
TPS54428  
www.ti.com  
SLVSB42A –NOVEMBER 2011–REVISED JANUARY 2012  
4.5V to 18 V Input, 4-A Synchronous Step-Down SWIFT™ Converter with Eco-Mode™  
Check for Samples: TPS54428  
1
FEATURES  
DESCRIPTION  
The TPS54428 is an adaptive on-time D-CAP2™  
mode synchronous buck converter.  
23  
•
D-CAP2™ Mode Enables Fast Transient  
Response  
The TPS54428 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.  
•
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 7.0 V  
The main control loop for the TPS54428 uses the  
D-CAP2™ mode control that provides a fast transient  
Highly Efficient Integrated FETs Optimized  
for Lower Duty Cycle Applications  
– 70 mΩ (High Side) and 53 mΩ (Low Side)  
response  
with  
no  
external  
compensation  
components.  
•
•
•
•
•
•
•
High Efficiency, Less Than 10 μA at Shutdown  
High Initial Bandgap Reference Accuracy  
Adjustable Soft Start  
The adaptive on-time control supports seamless  
transition between PWM mode at higher load  
conditions and Eco-mode™ operation at light loads.  
Pre-Biased Soft Start  
Eco-mode™ allows the TPS54428 to maintain high  
efficiency during lighter load conditions.  
650-kHz Switching Frequency (fSW  
)
Cycle By Cycle Over Current Limit  
The TPS54428 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.  
Auto-Skip Eco-mode™ for High Efficiency at  
Light Load  
APPLICATIONS  
•
Wide Range of Applications for Low Voltage  
System  
The output voltage can be programmed between  
0.76 V and 7.0 V.  
–
–
–
–
Digital TV Power Supply  
The device also features an adjustable soft start time.  
High Definition Blu-ray Disc™ Players  
Networking Home Terminal  
Digital Set Top Box (STB)  
The TPS54428 is available in the 8-pin DDA  
package,and designed to operate from –40°C to  
85°C.  
.
Vout(50mV/div)  
TPS54428DDA  
Iout(2A/div)  
100us/div  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
3
D-CAP2 is a trademark of Texas Instruments.  
Blu-ray Disc is a trademark of Blu-ray Disc Association.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2011–2012, Texas Instruments Incorporated  
 
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TPS54428DRCT 替代型号

型号 品牌 替代类型 描述 数据表
TPS54427DRCT TI

类似代替

 4.5V 至 18V 输入，4A 同步降压转换器 | DRC | 10 | -40 to
TPS54427DRCR TI

类似代替

 4.5V 至 18V 输入，4A 同步降压转换器 | DRC | 10 | -40 to
TPS54428DRCR TI

类似代替

 具有 Eco-Mode™ 的 4.5V 至 18V 输入、4A SWIFT™ 同步降压转换

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