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TPS40170-Q1 Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza TPS40170-Q1
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-Q1 Datasheet(HTML) 1 Page - Texas Instruments

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TPS40170-Q1
www.ti.com
SLVSB90A – JANUARY 2012 – REVISED MARCH 2012
4.5-V TO 60-V WIDE-INPUT SYNCHRONOUS PWM BUCK CONTROLLER
Check for Samples: TPS40170-Q1
1
FEATURES
APPLICATIONS
2
Qualified for Automotive Applications
POL Modules
AEC-Q100 Qualified With the Following
Wide Input Voltage, High-Power-Density
Results:
DC/DC Converter
DESCRIPTION
Device Temperature Grade 1:
TPS40170-Q1 is a full-featured, synchronous PWM
–40°C to +125°C Ambient Operating
buck controller that operates at an input voltage
Temperature Range
between 4.5 V and 60 V and is optimized for high-
Device HBM ESD Classification Level H1C
power-density,
high-reliability
dc-dc
converter
applications. The controller implements voltage-mode
Device CDM ESD Classification Level C3B
control with input-voltage feed-forward compensation
Wide-Input Voltage Range from 4.5 V to 60 V
that enables instant response to an input voltage
600-mV Reference Voltage With 1% Accuracy
change. The switching frequency is programmable
Programmable UVLO and Hysteresis
from 100 kHz to 600 kHz.
Voltage-Mode Control With Voltage Feed-
The TPS40170-Q1 has a complete set of system
Forward
protection
and
monitoring
features
such
as
programmable
UVLO,
programmable
overcurrent
Programmable Frequency Between 100 kHz
protection (OCP) by sensing the low-side FET,
and 600 kHz
selectable short-circuit protection (SCP) by sensing
Bidirectional Frequency Synchronization With
the high-side FET, and thermal shutdown. The
Master/Slave Option
ENABLE pin allows for system shutdown in a low-
Low-Side FET Sensing Overcurrent Protection
current (1-µA typical) mode. The controller supports
and High-Side FET Sensing Short-Circuit
pre-biased output, provides an open-drain PGOOD
signal, and has closed-loop soft-start, output-voltage
Protection With Integrated Thermal
tracking, and adaptive dead-time control.
Compensation
Programmable Closed-Loop Soft-Start
TPS40170-Q1
provides
accurate
output-voltage
regulation within 1% accuracy. Additionally, the
Supports Pre-Biased Outputs
controller implements a novel scheme of bidirectional
Thermal Shutdown at 165°C With Hysteresis
synchronization with one controller acting as the
Voltage Tracking
master and other downstream controllers acting as
slaves, synchronized to the master in-phase or 180°
Power Good
out-of-phase. Slave controllers can be synchronized
ENABLE With 1-µA Low-Current Shutdown
to an external clock within ±30% of the free-running
8-V and 3.3-V LDO Output
switching frequency.
Integrated Bootstrap Diode
20-Pin 3.5-mm × 4.5-mm QFN (RGY) Package
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 © 2012, 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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