TPS54550PWPR

Product Summary

The TPS54550PWPR is a medium output current synchronous buck PWM converter with an integrated high side MOSFET and a gate driver for an low side external MOSFET. Features include a high performance voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter inductors and capacitors. The TPS54550PWPR has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4.5 V. The applications of the TPS54550PWPR include Industrial and Commercial Low Power Systems, LCD Monitors and TVs, Computer Peripherals, Point of Load Regulation for High, Performance DSPs, FPGAs, ASICs and Microprocessors.

Parametrics

TPS54550PWPR absolute maximum ratings: (1)VI, Input voltage range, VIN: -0.3 V to 21.5V; VSENSE: -0.3 V to 8.0V; UVLO: -0.3 V to 8.0V: SYNC -0.3 V to 4.0V; SSENA -0.3 V to 4.0V; BOOT: VI(PH) + 8.0V; (2)VO, Output voltage range, VBIAS: -0.3 to 8.5V; LSG: -0.3 to 8.5V; SYNC -0.3 to 4.0V; RT: -0.3 to 4.0V; PWRGD -0.3 to 6.0V; COMP -0.3 to 4.0V; PH -1.5 V to 22V; (3)IO, Source current , PH: Internally Limite; LSG (Steady State Current): 10 mA; COMP, VBIAS: 3 mA; (4)IS, Sink current, SYNC: 5 mA; LSG (Steady State Current): 100 mA; PH (Steady State Current): 500 mA; COMP: 3 mA; SSENA, PWRGD: 10 mA; (5)Voltage differential, AGND to PGND: ± 0.3 V; (6)T J Junction temperature: +150℃; (7)T stg Storage temperature: -65 to +150℃; (8)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 260 ℃.

Features

TPS54550PWPR features: (1)40-mΩ MOSFET Switches for High Efficiencyat 6-A Continuous Output Source or SinkCurrent; (2)Disabled Current Sinking During Start-Up; (3)Adjustable Output Voltage Down to 0.891 V With 1.0% Accuracy; (4)Wide PWM Frequency: Fixed 250 kHz, 500 kHz or Adjustable 250 kHz to 700 kHz; (5)Adjustable Slow Start; (6)Adjustable Undervoltage Lockout; (7)Load Protected by Peak Current Limit and Thermal Shutdown; (7)16-Pin TSSOP PowerPAD Package; (8)SWIFT Documentation Application Notes, and Design Software.

Diagrams