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TPS40170-EP Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza TPS40170-EP
Descripción Electrónicos  4.5-V TO 60-V WIDE-INPUT SYNCHRONOUS PWM BUCK CONTROLLER
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS40170-EP Datasheet(HTML) 1 Page - Texas Instruments

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TPS40170-EP
www.ti.com
SLVSBT7A – MARCH 2013 – REVISED APRIL 2013
4.5-V TO 60-V WIDE-INPUT SYNCHRONOUS PWM BUCK CONTROLLER
Check for Samples: TPS40170-EP
1
FEATURES
2
Wide-Input Voltage Range from 4.5 V to 60 V
SUPPORTS DEFENSE, AEROSPACE,
AND MEDICAL APPLICATIONS
600-mV Reference Voltage With 1% Accuracy
Controlled Baseline
Programmable UVLO and Hysteresis
One Assembly and Test Site
Voltage-Mode Control With Voltage Feed-
Forward
One Fabrication Site
Programmable Frequency Between 100 kHz
Available in Military (–55°C to 125°C)
and 600 kHz
Temperature Range
Bidirectional Frequency Synchronization With
Extended Product Life Cycle
Master/Slave Option
Extended Product-Change Notification
Low-Side FET Sensing Overcurrent Protection
Product Traceability
and High-Side FET Sensing Short-Circuit
Protection With Integrated Thermal
DESCRIPTION
Compensation
TPS40170 is a full-featured, synchronous PWM buck
Programmable Closed-Loop Soft-Start
controller that operates at an input voltage between
4.5 V and 60 V and is optimized for high-power-
Supports Pre-Biased Outputs
density, high-reliability dc-dc converter applications.
Thermal Shutdown at 165°C With Hysteresis
The controller implements voltage-mode control with
Voltage Tracking
input-voltage feed-forward compensation that enables
instant response to an input voltage change. The
Power Good
switching frequency is programmable from 100 kHz to
ENABLE With 1-µA Low-Current Shutdown
600 kHz.
8-V and 3.3-V LDO Output
The TPS40170 has a complete set of system
Integrated Bootstrap Diode
protection
and
monitoring
features
such
as
20-Pin 3.5-mm × 4.5-mm QFN (RGY) Package
programmable
UVLO,
programmable
overcurrent
protection (OCP) by sensing the low-side FET,
APPLICATIONS
selectable short-circuit protection (SCP) by sensing
the high-side FET, and thermal shutdown. The
POL Modules
ENABLE pin allows for system shutdown in a low-
Wide Input Voltage, High-Power-Density
current (1-µA typical) mode. The controller supports
DC/DC Converter
pre-biased output, provides an open-drain PGOOD
signal, and has closed-loop soft-start, output-voltage
tracking, and adaptive dead-time control.
TPS40170
provides
accurate
output-voltage
regulation within 1% accuracy. Additionally, the
controller implements a novel scheme of bidirectional
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.
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
NexFET is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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