Product Summary

The TPS54310 is a low-input-voltage high-output-current synchronous-buck PWM converter. The TPS54310 integrates all required active components. The applications of the TPS54310 include Low-Voltage, High-Density Systems With Power Distributed at 5 V or 3.3 V, Point of Load Regulation for High Performance DSPs, FPGAs, ASICs, and Microprocessors, Broadband, Networking and Optical Communications Infrastructure and Portable Computing/Notebook PCs. The TPS54310 is available in a thermally enhanced 20-pin TSSOP (PWP) PowerPAD package, which eliminates bulky heatsinks.

Parametrics

TPS54310 absolute maximum ratings: (1)Input voltage range VI, VIN, SS/ENA, SYNC: –0.3 to 7 V; RT: -0.3 to 6 V; VSENSE: –0.3 to 4 V; BOOT: –0.3 to 17 V; (2)Output voltage range V; (3)output voltage range, VO, VBIAS, PWRGD, COMP: –0.3 to 7 V; PH: –0.6 to 10 V; (4)Source current, IO, PH: Internally Limited; COMP, VBIAS: 6 mA; (5)Sink current,PH: 6 A; COMP: 6 mA; SS/ENA,PWRGD: 10 mA; (6)Voltage differential, AGND to PGND: ±0.3 V; (7)Operating virtual junction temperature range, TJ: –40 to 150℃; (8)Storage temperature, Tstg: –65 to 150℃; (9)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 300℃.

Features

TPS54310 features: (1)60-mΩ MOSFET Switches for High Efficiency at 3-A Continuous Output Source or Sink Current; (2)0.9-V to 3.3-V Adjustable Output Voltage With 1% Accuracy; (3)Externally Compensated for Design Flexibility; (4)Fast Transient Response; (5)Wide PWM Frequency: Fixed 350 kHz, 550kHz, or Adjustable 280 kHz to 700 kHz; (6)Load Protected by Peak Current Limit and Thermal Shutdown; (7)Integrated Solution Reduces Board Area and Total Cost.

Diagrams

TPS54310 Simplified Schematic

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