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TPS40050-Q1 Datasheet

  • TPS40050-Q1

  • WIDE-INPUT SYNCHRONOUS BUCK CONTROLLER

  • 32頁

  • TI

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8
TPS40050 Q1
TPS40051 Q1
TPS40053 Q1
SGLS219 鈭?NOVEMBER 2003
WIDE INPUT SYNCHRONOUS
BUCK CONTROLLER
FEATURES
D
Qualification in Accordance With AEC-Q100
(1)
D
Qualified for Automotive Applications
D
Customer-Specific Configuration Control Can
D
D
D
D
D
D
D
D
D
D
D
D
D
Be Supported Along With Major-Change
Approval
Operating Input Voltage 8 V to 40 V
Input Voltage Feed-Forward Compensation
< 1 % Internal 0.7-V Reference
Programmable Fixed-Frequency Up to 1 MHz
Voltage Mode Controller
Internal Gate Drive Outputs for High-Side and
Synchronous N-Channel MOSFETs
16-Pin PowerPADt Package (胃
JC
= 2擄C/W)
Thermal Shutdown
Externally Synchronizable
Programmable High-Side Current Limit
Programmable Closed-Loop Soft-Start
TPS40050 Source Only
TPS40051 Source/Sink
TPS40053 Source/Sink With V
OUT
Prebias
DESCRIPTION
The TPS4005x is a family of high-voltage, wide input
(8 V to 40 V), synchronous, step-down converters.
The TPS4005x family offers design flexibility with a
variety of user programmable functions, including
soft-start, UVLO, operating frequency, voltage feed-
forward, high-side current limit, and loop compensation.
The TPS4005x are also synchronizable to an external
supply. They incorporate MOSFET gate drivers for
external N-channel high-side and synchronous rectifier
(SR) MOSFETs. Gate drive logic incorporates
anti-cross conduction circuitry to prevent simultaneous
high-side and synchronous rectifier conduction.
The TPS4005x uses voltage feed-forward control
techniques to provide good line regulation over the wide
(4:1) input voltage range, and fast response to input line
transients with near constant gain with input variation
which eases loop compensation.
The externally programmable current limit provides
pulse-by-pulse current limit, as well as hiccup mode
operation utilizing an internal fault counter for longer
duration overloads.
(1) Contact factory for details. Q100 qualification data available on
request.
APPLICATIONS
D
Power Modules
D
Networking/Telecom
D
Industrial
D
Servers
ORDERING INFORMATION
TA
鈭?0 C 125 C
鈭?0擄C to 125擄C
APPLICATION
SOURCE(2)
SOURCE/SINK(2)
SOURCE/SINK(2) with prebias
PACKAGE
Plastic HTSSOP (PWP)(1)
Plastic HTSSOP (PWP)(1)
Plastic HTSSOP (PWP)(1)
PART NUMBER
TPS40050QPWPRQ1
TPS40051QPWPRQ1
TPS40053QPWPRQ1
(1) This PWP package is taped and reeled as indicated by the R suffix on the device type (i.e., TPS40050QPWPRQ1). See the application section of
the data sheet for PowerPAD drawing and layout information.
(2) See
Application Information
section, pg. 8
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.
PowerPADt is trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright
錚?/div>
2002, 2003, Texas Instruments Incorporated

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