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TPS62092 PDF预览

TPS62092

更新时间: 2024-11-05 11:57:43
品牌 Logo 应用领域
德州仪器 - TI 转换器分布式控制系统DCS
页数 文件大小 规格书
26页 1101K
描述
3A High Efficient Synchronous Step Down Converter with DCS™ Control

TPS62092 数据手册

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TPS62090, TPS62091  
TPS62092, TPS62093  
www.ti.com  
SLVSAW2A MARCH 2012REVISED MARCH 2012  
3A High Efficient Synchronous Step Down Converter with DCS™ Control  
Check for Samples: TPS62090, TPS62091, TPS62092, TPS62093  
1
FEATURES  
DESCRIPTION  
The TPS6209x device family is a high frequency  
2
2.5 V to 6 V Input Voltage Range  
DCS™ Control  
synchronous step down converter optimized for small  
solution size, high efficiency and suitable for battery  
powered applications. To maximize efficiency, the  
converter operates in PWM mode with a nominal  
switching frequency of 2.8 MHz/1.4 MHz and  
automatically enters Power Save Mode operation at  
light load currents. When used in distributed power  
supplies and point of load regulation, the device  
allows voltage tracking to other voltage rails and  
tolerates output capacitors ranging from 10 µF up to  
150 µF and beyond. Using the DCS™ Control  
topology the device achieves excellent load transient  
performance and accurate output voltage regulation.  
95% Converter Efficiency  
Power Save Mode  
20 µA Operating Quiescent Current  
100% Duty Cycle for Lowest Dropout  
2.8 MHz/1.4 MHz Typical Switching Frequency  
0.8 V to VIN Adjustable Output Voltage  
Fixed Output Voltage Versions  
Output Discharge Function  
Adjustable Softstart  
The output voltage start-up ramp is controlled by the  
softstart pin, which allows operation as either a  
standalone power supply or in tracking configurations.  
Power sequencing is also possible by configuring the  
Enable and Power Good pins. In Power Save Mode,  
the device operates at typically 20 µA quiescent  
current. Power Save Mode is entered automatically  
and seamlessly maintaining high efficiency over the  
entire load current range.  
Two Level Short Circuit Protection  
Output Voltage Tracking  
Wide Output Capacitance Selection  
Available in 3x3mm 16 Pin QFN Package  
APPLICATIONS  
Distributed Power Supplies  
Notebook, Netbook Computers  
Hard Disk Drivers  
Processor Supply  
Battery Powered Applications  
100  
95  
90  
85  
80  
75  
70  
65  
L1  
470nH  
TPS62090  
PVIN  
Vin  
2.5V to 6V  
Vout  
1.8V/3A  
12  
11  
1
SW  
SW  
2
C1  
10mF  
C2  
22mF  
PVIN  
10  
13  
7
16  
5
AVIN  
EN  
VOS  
FB  
R3  
500k  
C3  
10nF  
4
PG  
FREQ  
AGND  
CP  
CN  
SS  
Power Good  
3
8
C4  
VOUT = 3.3 V  
L = 1 µH  
f = 1.4 MHz  
VIN = 3.7 V  
VIN = 4.2 V  
VIN = 5 V  
60  
55  
50  
10nF  
9
6
PGND PGND  
14 15  
100m  
1
10  
100  
1k  
10k  
I load (mA)  
G002  
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
All trademarks are the property of their respective owners.  
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 © 2012, Texas Instruments Incorporated  

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