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TPS54350

更新时间： 2024-11-07 22:49:39
品牌 Logo 应用领域
德州仪器 - TI 输出元件输入元件
页数 文件大小 规格书
27页 434K
描述
4.5-V 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FET(SWIFT)

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TPS54350 数据手册

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www.ti.com  
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SLVS456C − OCTOBER 2003 − REVISED OCTOBER 2004  
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FEATURES  
DESCRIPTION  
D
100 mΩ, 4.5-A Peak MOSFET Switch for High  
Efficiency at 3-A Continuous Output Current  
The TPS54350 is a medium output current synchronous  
buck PWM converter with an integrated high side  
MOSFET and a gate driver for an optional low side  
external MOSFET. Features include a high performance  
voltage error amplifier that enables maximum  
performance under transient conditions and flexibility in  
choosing the output filter inductors and capacitors. The  
TPS54350 has an under-voltage-lockout circuit to prevent  
start-up until the input voltage reaches 4.5 V; an internal  
slow-start circuit to limit in-rush currents; and a power good  
output to indicate valid output conditions. The  
synchronization feature is configurable as either an input  
or an output for easy 180° out of phase synchronization.  
D
Uses External Lowside MOSFET or Diode  
D
Output Voltage Adjustable Down to 0.891 V  
With 1% Accuracy  
D
D
D
Synchronizes to External Clock  
1805 Out of Phase Synchronization  
Wide PWM Frequency − Fixed 250 kHz,  
500 kHz or Adjustable 250 kHz to 700 kHz  
D
Internal Slow Start  
D
Load Protected by Peak Current Limit and  
Thermal Shutdown  
D
D
Adjustable Undervoltage Lockout  
16-Pin TSSOP PowerPADE Package  
The TPS54350 device is available in a thermally  
enhanced 16-pin TSSOP (PWP) PowerPADpackage.  
TI provides evaluation modules and the SWIFTDesigner  
software tool to aid in quickly achieving high-performance  
power supply designs to meet aggressive equipment  
development cycles.  
APPLICATIONS  
D
D
D
D
Industrial & Commercial Low Power Systems  
LCD Monitors and TVs  
Computer Peripherals  
Point of Load Regulation for High  
Performance DSPs, FPGAs, ASICs and  
Microprocessors  
EFFICIENCY  
vs  
LOAD CURRENT  
Simplified Schematic  
Input  
Voltage  
TPS54350  
SYNC  
95  
90  
85  
80  
75  
70  
65  
60  
VIN  
PWRGD  
ENA  
BOOT  
PH  
VBIAS  
COMP  
Output  
Voltage  
LSG  
PGND  
V
V
= 12 V  
= 5 V  
= 250 kHz  
VSENSE  
I
O
55  
50  
PWRPAD  
f
S
0.0 0.5  
1.0  
1.5 2.0  
2.5  
3.0 3.5  
I
− Load Current − A  
L
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.  
PowerPAD and SWIFT are trademarks of Texas Instruments.  
ꢁꢔ ꢊ ꢙꢎ ꢒ ꢀꢌ ꢊꢍ ꢙ ꢐꢀꢐ ꢟꢠ ꢡꢢ ꢣ ꢞꢤ ꢥꢟꢢꢠ ꢟꢦ ꢧꢨ ꢣ ꢣ ꢩꢠꢥ ꢤꢦ ꢢꢡ ꢪꢨꢫ ꢬꢟꢧ ꢤꢥꢟ ꢢꢠ ꢭꢤ ꢥꢩꢇ ꢁꢣ ꢢꢭꢨ ꢧꢥꢦ  
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Copyright 2003 − 2004, Texas Instruments Incorporated  
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与TPS54350相关器件

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 		4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS P
TPS54350MPWPREP TI

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 		4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS P
TPS54350MPWPREPG4 TI

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TPS54350PWP TI

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 		4.5-V 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FET(SWIFT)
TPS54350PWPG4 TI

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 		具有低侧 栅极驱动的 4.5V 至 20V 输入、3A 同步降压转换器 | PWP | 1
TPS54350PWPR TI

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 		4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM SWITCHER WITH INTEGRANTED FET(SWIFT)
TPS54350PWPRG4 TI

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 		具有低侧 栅极驱动的 4.5V 至 20V 输入、3A 同步降压转换器 | PWP | 1
TPS54352 TI

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 		4.5V TO 20 V INPUT 3-A OUTPUT SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FET
TPS54352-EP TI

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 		4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM SWITCHES
TPS54352MPWPREP TI

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 		4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM SWITCHES

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