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TPS54910-TPS54910PWP-TPS54910PWPR-TPS54910PWPRG4
3.3V Input 9A Continuous Buck Converter with Adjustable Output Voltage
TPS54910
3-V TO 4-V INPUT, 9-A OUTPUT SYNCHRONOUS BUCK PWM
SWITCHER WITH INTEGRATED FETs (SWIFT™)
6,4 mm X 9,7 mmTypical SizeSLVS421C − MARCH 2002 − REVISED FEBRUARY 2005
FEATURES 15-mΩ MOSFET Switches for High Efficiencyat 9-A Continuous Output 0.9-V to 2.5-V Adjustable Output Voltage Externally Compensated With 1% Accuracy Fast Transient Response Wide PWM Frequency: Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz Load Protected by Peak Current Limit andThermal Shutdown Integrated Solution Reduces Board Area andTotal Cost
APPLICATIONS Low-Voltage, High-Density Systems WithPower Distributed at 3.3 V Point of Load Regulation for High Performance DSPs, FPGAs, ASICs andMicroprocessors Broadband, Networking and OpticalCommunications Infrastructure Portable Computing/Notebook PCs
DESCRIPTIONAs a member of the SWIFT™ family of dc/dc regulators,the TPS54910 low-input voltage high-output currentsynchronous buck PWM converter integrates allrequired active components. Included on the substratewith the listed features are a true, high performance,voltage error amplifier that enables maximumperformance under transient conditions and flexibility inchoosing the output filter L and C components; anunder-voltage-lockout circuit to prevent start-up untilthe input voltage reaches 3 V; an internally andexternally set slow-start circuit to limit in-rush currents;and a power good output useful for processor/logicreset, fault signaling, and supply sequencing.
The TPS54910 is available in a thermally enhanced28-pin TSSOP (PWP) PowerPAD™ package, whicheliminates bulky heatsinks. TI provides evaluationmodules and the SWIFT™ designer software tool to aidin quickly achieving high-performance power supplydesigns to meet aggressive equipment developmentcycles.
SIMPLIFIED SCHEMATICEfficiency
EFFICIENCY AT 700 kHz
IO − Output Current − A
0123 45 6789101112
Input
SIMPLIFIED SCHEMATIC
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