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V62/13607-01XE

更新时间: 2024-11-20 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开关式稳压器或控制器
页数 文件大小 规格书
49页 1352K
描述
增强型产品 4.5 V 至 60 V 宽输入同步 PWM 降压控制器 | RGY | 20 | -55 to 125

V62/13607-01XE 数据手册

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TPS40170  
www.ti.com  
SLUS970 MARCH 2011  
4.5-V TO 60-V WIDE-INPUT SYNCHRONOUS PWM BUCK CONTROLLER  
Check for Samples: TPS40170  
1
FEATURES  
DESCRIPTION  
TPS40170 is a full-featured, synchronous PWM buck  
controller that operates at an input voltage between  
Wide-Input Voltage Range from 4.5 V to 60 V  
600-mV Reference Voltage with 1% Accuracy  
Programmable UVLO and Hysteresis  
4.5  
V and 60 V and is optimized for high-  
power-density, high-reliability DC/DC converter  
applications. The controller implements voltage-mode  
control with input-voltage feed-forward compensation  
that enables instant response to input voltage  
change. The switching frequency is programmable  
from 100 kHz to 600 kHz.  
Voltage Mode Control With Voltage Feed  
Forward  
Programmable Frequency Between 100 kHz  
and 600 kHz  
Bi-directional -Frequency Synchronization  
With Master/Slave Option  
The TPS40170 has a complete set of system  
protection and monitoring features such as  
programmable UVLO, programmable overcurrent  
protection (OCP) by sensing the low-side FET,  
selectable short-circuit protection (SCP) by sensing  
the high-side FET and thermal shutdown. The  
ENABLE pin allows for system shutdown in a  
low-current (1-µA typical) mode. The controller  
supports pre-biased output, provides an open-drain  
PGOOD signal, and has closed loop soft-start, output  
voltage tracking and adaptive dead-time control.  
Low-side FET Sensing Overcurrent Protection  
and High-Side FET Sensing Short-Circuit  
Protection With Integrated Thermal  
Compensation  
Programmable Closed Loop Soft-Start  
Supports Pre-Biased Outputs  
Thermal Shutdown at 165°C with Hysteresis  
Voltage Tracking  
TPS40170 provides accurate output voltage  
regulation via 1% ensured accuracy. Additionally, the  
controller implements a novel scheme of bi-directional  
synchronization with one controller acting as the  
master and other downstream controllers acting as  
slaves synchronized to the master in-phase or 180°  
out-of-phase. Slave controllers can be synchronized  
to an external clock within ±30% of the free running  
switching frequency.  
Power Good  
ENABLE with 1-µA Low-Current Shutdown  
8.0-V and 3.3-V LDO Output  
Integrated Bootstrap Diode  
20-Pin 3.5 mm × 4.5 mm QFN (RGY) Package  
APPLICATIONS  
POL Modules  
Wide Input Voltage, High-Power Density  
DC/DC Converters for Industrial, Networking  
and Telecomm Equipment  
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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