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TPS54386-Q1

更新时间： 2024-11-08 12:16:15
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
50页 1076K
描述
3-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH-SIDE MOSFET

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TPS54386-Q1 数据手册

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TPS54386-Q1  
www.ti.com  
SLUSAZ9A –MARCH 2012–REVISED MARCH 2012  
3-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH-SIDE MOSFET  
Check for Samples: TPS54386-Q1  
1
FEATURES  
APPLICATIONS  
23  
•
Qualified for Automotive Applications  
•
Power for DSP  
•
AEC-Q100 Qualified With the Following  
Results:  
•
Consumer Electronics  
CONTENTS  
–
Device Temperature Grade 2: –40°C to  
+105°C Ambient Operating Temperature  
Device Ratings  
2
3
Electrical Characteristics  
Device Information  
Application Information  
Design Examples  
–
–
Device HBM ESD Classification Level H2  
Device CDM ESD Classification Level C3B  
9
12  
32  
44  
•
•
4.5-V to 28-V Input Range  
Output Voltage Range 0.8 V to 90% of Input  
Voltage  
Additional References  
•
•
•
Output Current Up to 3 A  
DESCRIPTION  
Fixed Switching Frequency: 600 kHz  
The TPS54386-Q1 are dual-output, non-synchronous  
buck converters capable of supporting 3-A output  
applications that operate from a 4.5-V to 28-V input  
supply voltage, and require output voltages between  
0.8 V and 90% of the input voltage.  
Three Selectable Levels of Overcurrent  
Protection (Output 2)  
•
•
•
•
0.8-V 1.5% Voltage Reference  
2.1-ms Internal Soft Start  
With an internally-determined operating frequency,  
soft-start time, and control-loop compensation, these  
converters provide many features with a minimum of  
Dual PWM Outputs 180° Out-of-Phase  
Ratiometric or Sequential Startup Modes  
Selectable by a Single Pin  
external  
components.  
Channel-1  
overcurrent  
protection is set at 4.5 A, whereas the channel-2  
overcurrent protection level is selected by connecting  
a pin to ground, to BP, or left floating. The setting  
levels are used to allow for scaling of external  
components for applications that do not need the full  
load capability of both outputs.  
•
•
•
•
•
•
85-mΩ Internal High-Side MOSFETs  
Current Mode Control  
Internal Compensation  
Pulse-by-Pulse Overcurrent Protection  
Thermal Shutdown Protection at 148°C  
14-Pin PowerPAD™ HTSSOP Package  
The outputs may be enabled independently, or may  
be configured to allow either ratiometric or sequential  
start-up sequencing. Additionally, the two outputs  
may be powered from different sources.  
VIN  
TPS54386  
1
PVDD1 PVDD2 14  
BOOT1 BOOT2 13  
2
3
4
5
6
7
OUTPUT1  
SW1  
GND  
EN1  
EN2  
FB1  
SW2 12  
BP 11  
SEQ 10  
ILIM2  
FB2  
9
8
GND  
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
PowerPAD is a trademark of Texas Instruments.  
All other 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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