Medical Applications Guide (Rev. B - Mouser Electronics

44➔Diagnostic, Patient Monitoring and TherapyPower Management for Diagnostics1.6MHz, 3V to 6V Input, 3A DC/DC SynchronousBuck ConverterTPS54317Get samples, datasheets, evaluation modules, app reports and software toolsat: www.ti.com/sc/device/TPS54317Key Features• Input voltage range: 3V to 6V• Two 3A (4.5A peak) integrated MOSFETs provide synchronousrectification• Adjustable/synchronizable switching frequency to 1.6MHz• Output voltage adjustable down to 0.9V• Power good, enable, adjustable slow-start, current limit,thermal shutdown and 1% accuracy• Supported by free SwitcherPro design softwareApplications*• TI TMS320C64x DSPs• Altera ® Cyclone ® II, Stratix ® II, Stratix II GX, Stratix III• Xilinx ® Spartan ® -3 family, Virtex ® -5• Core and IO power supplies* TI’s reference to other companies’ products does not constitute TI’s recommendationor approval of such products for use in any application.Other Low-Voltage SWIFT Components*V IN Range I OUTPart Number (V) (A) Frequency PackageTPS54310 3 to 6 3 Up to 700kHz 20HTSSOPTPS54610 3 to 6 6 Up to 700kHz 28HTSSOPTPS54910 3 to 4 9 Up to 700kHz 28HTSSOPTPS54010 3 to 4 14 Up to 700kHz 28HTSSOP* Same feature set as TPS54317InputVINPWRGDSS/ENASYNCHRTVBIASAGNDTPS54317COMPPHBOOTPGNDVSENSEOutput4.5V to 20V Input, 3A and 6A ConvertersTPS54350, TPS54550Get samples, datasheets, evaluation modules, app reports and software toolsat: www.ti.com/sc/device/TPS54350 or www.ti.com/sc/device/TPS54550Key Features• Input voltage range: 4.5V to 20V• Synchronous buck for high efficiency• Adjustable output voltage down to 0.9V• Power good, enable, adjustable slow-start, current limit,thermal shutdown• 180° out-of-phase switching• TPS54350 and TPS54550 are footprint compatible• Fixed 250kHz, 500kHz, or adjustable switching frequencyApplications*• TI TMS320C64x DSPs• Altera Cyclone II, Stratix II, Stratix II GX, Stratix III• Xilinx Spartan-3 family, Virtex-5• Core and IO power supplies* TI’s reference to other companies’ products does not constitute TI’s recommendationor approval of such products for use in any application.Mid-Voltage SWIFT ComponentsV IN Range I OUTPart Number (V) (A) Compensation PackageTPS54350 4.5 to 20 3 External 16HTSSOPTPS5435x 4.5 to 20 3 Internal* 16HTSSOPTPS54550 4.5 to 20 6 External 16HTSSOP* Fixed output versions available (1.2, 1.5, 1.8, 2.5 and 3.3V)TPS54350 and TPS54550*SYNCPWRGDSS/ENAVBIASCOMPVSENSEPWRPADVINBOOTPHLSGPGNDInputVoltageOutputVoltageTPS54317 functional block diagram.*Note: TPS54350 and TPS54550 are footprint compatible.Functional block diagram.Medical Applications Guide Texas Instruments 2Q 2007