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TPS54372QPWPRQ1
Automotive Catalog 3-A Output Tracking/Termination Sync PWM Switcher
TPS54372-Q1
SGLS267E − OCTOBER 2004 − REVISED JUNE 2008
3-A OUTPUT TRACKING/TERMINATION SYNCHRONOUS PWM
SWITCHER WITH INTEGRATED FETs (SWIFT)
6,4 mm X 6,6 mm
Typical Size
FEATURES Qualified for Automotive Applications Tracks Externally Applied Reference Voltage 60-mΩ MOSFET Switches for High Efficiency
at 3-A Continuous Output Source or Sink
Current 6% to 90% VI Output Tracking Range Wide PWM Frequency:
Fixed 350 kHz or Adjustable 280 kHz to
700 kHz Load Protected by Peak Current Limit and
Thermal Shutdown Integrated Solution Reduces Board Area and
Total Cost
APPLICATIONS DDR Memory Termination Voltage Active Termination of GTL and SSTL
High-Speed Logic Families DAC Controlled High Current Output Stage Precision Point of Load Power Supply
DESCRIPTIONAs 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.
The TPS54372 is available in a thermally enhanced
20-pin TSSOP (PWP) PowerPAD package, which
eliminates bulky heatsinks. T exas 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
Input
SIMPLIFIED SCHEMATIC
VDDQ
t − Time − 25 ms/div
− Output V
oltage − 50 mV/div
TRANSIENT RESPONSE
− Output Current
− 1
A/div
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