TPS54372-Q1 Datasheet, PDF (1/17 Pages) Texas Instruments – 3-A OUTPUT TRACKING/TERMINATION SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FETs

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Typical Size
6,4 mm X 6,6 mm
TPS54372-Q1
SGLS267E − OCTOBER 2004 − REVISED JUNE 2008
3-A OUTPUT TRACKING/TERMINATION SYNCHRONOUS PWM
SWITCHER WITH INTEGRATED FETs (SWIFT)
FEATURES
D Qualified for Automotive Applications
D Tracks Externally Applied Reference Voltage
D 60-mΩ MOSFET Switches for High Efficiency
at 3-A Continuous Output Source or Sink
Current
D 6% to 90% V_I Output Tracking Range
D Wide PWM Frequency:
Fixed 350 kHz or Adjustable 280 kHz to
700 kHz
D Load Protected by Peak Current Limit and
Thermal Shutdown
D Integrated Solution Reduces Board Area and
Total Cost
DESCRIPTION
As a member of the SWIFT family of dc/dc regulators,
the TPS54372 low-input voltage high-output current
synchronous-buck PWM converter integrates all
required active components. Included on the substrate
with the listed features are a true, high performance,
voltage error amplifier that enables maximum
performance under transient conditions and flexibility in
choosing the output filter L and C components; an
under-voltage-lockout circuit to prevent start-up until
the input voltage reaches 3 V; an internally and
externally set slow-start circuit to limit in-rush currents;
and a status output to indicate valid operating
conditions.
APPLICATIONS
D DDR Memory Termination Voltage
D Active Termination of GTL and SSTL
High-Speed Logic Families
D DAC Controlled High Current Output Stage
D Precision Point of Load Power Supply
The TPS54372 is available in a thermally enhanced
20-pin TSSOP (PWP) PowerPAD package, which
eliminates bulky heatsinks. Texas Instruments provides
evaluation modules and the SWIFT designer software
tool to aid in quickly achieving high-performance power
supply designs to meet aggressive equipment
development cycles.
SIMPLIFIED SCHEMATIC
VDDQ
Input
SIMPLIFIED SCHEMATIC
VIN
PH
TPS54372
BOOT
PGND
REFIN
VBIAS
COMP
AGND ^VSENSE
VTTQ
Compensation
Network
TRANSIENT RESPONSE
V_I = 5 V,
V_O = 1.25 V
0 A to
2.25 A
t − Time − 25 ms/div
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 and SWIFT are trademarks 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  2008, Texas Instruments Incorporated