TPS40054_16 Datasheet, PDF (1/39 Pages) Texas Instruments – Wide-Input Synchronous Buck Controller

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TPS40054, TPS40055, TPS40057
SLUS593I – DECEMBER 2003 – REVISED DECEMBER 2014
TPS4005x Wide-Input Synchronous Buck Controller
1 Features
•1 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 and Sink
• TPS40057 Source and Sink With V_O Prebias
2 Applications
• Power Modules
• Networking and Telecom
• Industrial and Servers
3 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 using an internal fault counter for longer
duration overloads.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS4005x
HTSSOP (16)
5.00 mm x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
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
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.