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TPS40195RGYT Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce TPS40195RGYT
Description  4.5-V TO 20-V SYNCHRONOUS BUCK CONTROLLER WITH SYNCHRONIZATION AND
Download  44 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS40195RGYT Fiches technique(HTML) 1 Page - Texas Instruments

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1
2
3
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EN
FB
COMP
VDD
TPS40195
5
6
7
8
ULVO
RT
ILIM
GND
16
15
14
13
HDRV
SW
BOOT
LDRV
12
11
10
9
BP
SS_SEL
PGOOD
SYNC
Power Good
V
OUT
UDG-06066
TPS40195
www.ti.com
SLUS720E – FEBRUARY 2007 – REVISED JULY 2012
4.5-V TO 20-V SYNCHRONOUS BUCK CONTROLLER WITH SYNCHRONIZATION AND
POWER GOOD
Check for Samples: TPS40195
1
FEATURES
CONTENTS
Input Operating Voltage Range: 4.5 V to 20 V
Device Ratings
2
Output Voltage as Low as 0.591 V ±0.5%
Electrical Characteristics
3
180° Bi-Directional Out-of-Phase
Synchronization
Typical Characteristics
5
Internal 5-V Regulator
Terminal Information
10
High and Low MOSFET Sense Overcurrent
Application Information
12
100 kHz to 600 kHz Switching Frequency
Design Example
21
Enable and Power Good
Additional References
34
Programmable UVLO and Hysteresis
Thermal Shutdown at 150°C
DESCRIPTION
Selectable Soft-Start
The TPS40195 is a flexible synchronous buck
Pre-Bias Output Safe
controller that operates from a nominal 4.5 V to 20 V
supply. This controller implements voltage mode
control with the switching frequency adjustable from
APPLICATIONS
100 kHz to 600 kHz. Flexible features found on this
Digital TV
device
include
selectable
soft-start
time,
Entry-Level and Midrange Servers
programmable
short
circuit
limit,
programmable
undervoltage lockout (UVLO) and synchronization
Networking Equipment
capability. An adaptive anti-cross conduction scheme
Non-Isolated DC-DC modules
is used to prevent shoot through current in the power
FETs. Over-current detection is done by sensing the
voltage drop across the low-side MOSFET when it is
on, and comparing it with a user programmable
threshold.
SIMPLIFIED APPLICATION DIAGRAM
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.
Copyright © 2007–2012, 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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