TPS40057PWPG4 Datasheet, PDF (1/35 Pages) Texas Instruments – WIDE-INPUT SYNCHRONOUS BUCK CONTROLLER

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TPS40054
TPS40055
8
TPS40057
SLUS593H – DECEMBER 2003 – REVISED JULY 2012
WIDE-INPUT SYNCHRONOUS BUCK CONTROLLER
Check for Samples: TPS40054, TPS40055, TPS40057
FEATURES
1
•2 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 PowerPAD™ Package (θ_JC = 2°C/W)
• Thermal Shutdown
• Externally Synchronizable
• Programmable High-Side Sense Short-Circuit
Protection
• Programmable Closed-Loop Soft-Start
• TPS40054 Source Only
• TPS40055 Source/Sink
• TPS40057 Source/Sink With V_O Prebias
APPLICATIONS
• Power Modules
• Networking/Telecom
• Industrial/Servers
CONTENTS
Device Ratings
2
Electrical Characteristics
3
Pin Descriptions
5
Application Information
7
Design Examples
22
Additional References
27
DESCRIPTION
The TPS4005x is a family of high-voltage, wide input
(8 V to 40 V), synchronous, step-down controllers.
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 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. Near-constant modulator gain
with input variation 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.
TPS4005xPWP
+
1 KFF
ILIM 16
V_IN
–
2 _RT
3 BP5
4 SYNC
VIN 15
BOOST 14
HDRV 13
5 _SGND
SW 12
+
6 SS/SD
BP10 11
V_O
7 VFB
LDRV 10
8 COMP PGND 9
–
UDG-03179
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.
PowerPAD is a trademark of Texas Instruments.
2
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 © 2003–2012, Texas Instruments Incorporated