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TPS61170-Q1

更新时间： 2024-11-02 12:47:11
品牌 Logo 应用领域
德州仪器 - TI 转换器升压转换器
页数 文件大小 规格书
28页 872K
描述
1.2A High Voltage Boost Converter in 2x2mm2 QFN Package

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TPS61170-Q1 数据手册

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TPS61170-Q1  
www.ti.com  
SLVSAX2 –SEPTEMBER 2011  
2
1.2A High Voltage Boost Converter in 2x2mm QFN Package  
Check for Samples: TPS61170-Q1  
1
FEATURES  
DESCRIPTION  
•
•
•
•
•
•
Qualified for Automotive Applications  
The TPS61170-Q1 is a monolithic, high-voltage  
switching regulator with integrated 1.2-A, 40-V power  
MOSFET. It can be configured in several standard  
switching-regulator topologies, including boost and  
SEPIC. The device has a wide input-voltage range to  
support applications with input voltage from multi-cell  
batteries or regulated 5-V, 12-V power rails.  
3-V to 18-V Input Voltage Range  
High Output Voltage: Up to 38 V  
1.2-A integrated Switch  
1.2-MHz Fixed Switching Frequency  
12 V at 300 mA and 24 V at 150 mA from 5-V  
Input (Typical)  
The TPS61170-Q1 operates at a 1.2-MHz switching  
frequency, allowing the use of low-profile inductors  
and low-value ceramic input and output capacitors.  
External loop compensation components give the  
user flexibility to optimize loop compensation and  
transient response. The device has built-in protection  
features, such as pulse-by-pulse overcurrent limit,  
soft start and thermal shutdown.  
•
•
•
Up to 93% Efficiency  
On-The-Fly Output Voltage Reprogramming  
Skip-Switching Cycle for Output Regulation at  
Light Load  
•
•
Built-in Soft Start  
6-Pin, 2 mm × 2 mm QFN Package  
The reference voltage to which the FB pin regulates  
is 1.229V. The reference voltage can be lowered  
using a 1-wire digital interface (Easyscale™ protocol)  
APPLICATIONS  
•
5-V to 12-V and 24-V, 12-V to 24-V Boost  
Converter  
through the CTRL pin. Alternatively,  
a
pulse  
width-modulation (PWM) signal can be applied to the  
CTRL pin. The duty cycle of the signal reduces the  
feedback reference voltage proportionally.  
•
Buck Boost Regulation Using SEPIC Topology  
The TPS61170-Q1 is available in a 6-pin 2 mm × 2  
mm QFN package, allowing a compact power-supply  
solution.  
L1  
10 mH  
VIN 5 V  
VOUT 12 V/ 300 mA  
D1  
C2  
4.7 mF  
C1  
4.7 mF  
TPS 61170  
R1  
87.6 kW  
VIN  
SW  
FB  
CTRL  
R3  
4.99 kW  
R2  
10 kW  
GND  
COMP  
C3  
10 nF  
L1: TOKO#A915_Y-100M  
C1: Murata GRM188R61A475K  
C2: Murata GRM21BR61E475K  
D1: ONsemi MBR0540T1  
*R3, C3: Compensation RC network  
Figure 1. Typical Application  
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.  
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, Texas Instruments Incorporated  
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