TPS546 Series

4.5-V to 18-V, stackable 35-A synchronous SWIFT™ buck converter with PMBus and pin-strapping

Catalog(15 parts)

Part	Voltage - Input (Max)▲▼	Mounting Type	Package / Case	Number of Outputs▲▼	Output Configuration	Current - Output▲▼	Voltage - Input (Min)▲▼	Operating Temperature▲▼	Operating Temperature▲▼	Frequency - Switching▲▼	Frequency - Switching▲▼	Topology	Supplier Device Package	Voltage - Output (Max)▲▼	Voltage - Output (Min/Fixed)▲▼	Output Type	Function	Supplied Contents	Frequency - Switching▲▼	Board Type	Outputs and Type	Outputs and Type▲▼	Voltage - Input▲▼	Voltage - Input▲▼	Main Purpose	Voltage - Output▲▼	Utilized IC / Part
Texas Instruments TPS546B24SRVFR Buck Switching Regulator IC Positive Programmable 0.25V 1 Output 20A 40-PowerLFQFN	18 V	Surface Mount	40-PowerLFQFN	1 ul	Positive	20 A	2.950000047683716 V	150 °C	-40 °C	1500000 Hz	225000 Hz	Buck	40-LQFN-CLIP (7x5)	5.5 V	0.25 V	Programmable	Step-Down
Texas Instruments TPS546C20ARVFR Buck Switching Regulator IC Positive Adjustable 0.35V 1 Output 35A 40-PowerLFQFN	18 V	Surface Mount	40-PowerLFQFN	1 ul	Positive	35 A	4.5 V	125 °C	-40 °C	1000000 Hz	200000 Hz	Buck	40-LQFN-CLIP (7x5)	5.5 V	0.3499999940395355 V	Adjustable	Step-Down
Texas Instruments TPS54614EVM-183 TPS54614 SWIFT™ DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board						6 A												Board(s)	550000 Hz	Fully Populated	Non-Isolated	1 ul	6 V	3 V	DC/DC, Step Down	1.7999999523162842 V	TPS54614
Texas Instruments TPS546D24SRVFR Buck Switching Regulator IC Positive Programmable 0.25V 1 Output 40A 40-PowerLFQFN	16 V	Surface Mount	40-PowerLFQFN	1 ul	Positive	40 A	2.950000047683716 V	150 °C	-40 °C	1500000 Hz	225000 Hz	Buck	40-LQFN-CLIP (7x5)	5.5 V	0.25 V	Programmable	Step-Down
Texas Instruments TPS546B24AEVM-1PH TPS546B24A - DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board						20 A												Board(s)	650000 Hz	Fully Populated	Non-Isolated	1 ul	18 V	2.950000047683716 V	DC/DC, Step Down	1.2000000476837158 V	TPS546B24A
Texas Instruments TPS546C23EVM2-746 TPS546C23 - DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board						70 A												Board(s)	500000 Hz	Fully Populated	Non-Isolated	1 ul	18 V	5 V	DC/DC, Step Down	1.2000000476837158 V	TPS546C23
Texas Instruments TPS546C23EVM1-746 TPS546C23 - DC/DC, Step Down 2, Non-Isolated Outputs Evaluation Board						35 A												Board(s)	500000 Hz	Fully Populated	Non-Isolated	2 ul	18 V	5 V	DC/DC, Step Down	0.8999999761581421 V	TPS546C23
Texas Instruments TPS546D24ARVFR Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 40A 40-PowerLFQFN	16 V	Surface Mount	40-PowerLFQFN	1 ul	Positive	40 A	2.950000047683716 V	125 °C	-40 °C	1500000 Hz	225000 Hz	Buck	40-LQFN-CLIP (7x5)	5.5 V	0.6000000238418579 V	Adjustable	Step-Down
Texas Instruments TPS546C20AEVM1-746 TPS546C20A - DC/DC, Step Down 2, Non-Isolated Outputs Evaluation Board						35 A												Board(s)	500000 Hz	Fully Populated	Non-Isolated	2 ul	18 V	5 V	DC/DC, Step Down	0.8999999761581421 V, 0.949999988079071 V	TPS546C20A
Texas Instruments TPS546B24ARVFR Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 20A 40-PowerLFQFN	18 V	Surface Mount	40-PowerLFQFN	1 ul	Positive	20 A	2.950000047683716 V	150 °C	-40 °C	1500000 Hz	225000 Hz	Buck	40-LQFN-CLIP (7x5)	5.5 V	0.6000000238418579 V	Adjustable	Step-Down
Texas Instruments TPS546C23ZRVFT Buck Switching Regulator IC Positive Adjustable 0.35V 1 Output 35A 40-PowerLFQFN	18 V	Surface Mount	40-PowerLFQFN	1 ul	Positive	35 A	4.5 V	125 °C	-40 °C	1000000 Hz	200000 Hz	Buck	40-LQFN-CLIP (7x5)	5.5 V	0.3499999940395355 V	Adjustable	Step-Down
Texas Instruments TPS546C20AEVM2-746 TPS546C20A - DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board						70 A												Board(s)	500000 Hz	Fully Populated	Non-Isolated	1 ul	18 V	5 V	DC/DC, Step Down	0.8999999761581421 V	TPS546C20A
Texas Instruments TPS546A24SRVFR Buck Switching Regulator IC Positive Programmable 0.25V 1 Output 10A 40-PowerLFQFN	18 V	Surface Mount	40-PowerLFQFN	1 ul	Positive	10 A	2.950000047683716 V	150 °C	-40 °C	1500000 Hz	225000 Hz	Buck	40-LQFN-CLIP (7x5)	5.5 V	0.25 V	Programmable	Step-Down
Texas Instruments TPS546C23RVFR Buck Switching Regulator IC Positive Adjustable 0.35V 1 Output 35A 40-PowerLFQFN	18 V	Surface Mount	40-PowerLFQFN	1 ul	Positive	35 A	4.5 V	125 °C	-40 °C	1000000 Hz	200000 Hz	Buck	40-LQFN-CLIP (7x5)	5.5 V	0.3499999940395355 V	Adjustable	Step-Down
Texas Instruments TPS546A24ARVFR Buck Switching Regulator IC Positive Adjustable 0.5V 1 Output 10A 40-PowerLFQFN	18 V	Surface Mount	40-PowerLFQFN	1 ul	Positive	10 A	2.950000047683716 V	150 °C	-40 °C			Buck	40-LQFN-CLIP (7x5)	5.5 V	0.5 V	Adjustable	Step-Down

Key Features

• PMBus™ 1.3 Compliant Converters: 35 A2-Device Stackable for up to 70 A With Current SharingInput Voltage Range: 4.5 V to 18 VOutput Voltage Range: 0.35 V to 5.5 VIntegrated 3.2-mΩ and 1.4-mΩ Stacked NexFET™ Power Stage350-mV to 1650-mV Reference for Adaptive Voltage Scaling (AVS) Function and Margining through PMBus0.5% Reference Accuracy at 600 mV and AboveLossless Low-Side MOSFET Current SensingVoltage Mode Control With Input Feed-ForwardDifferential Remote SensingMonotonic Start-Up into Pre-Biased OutputOutput Voltage and Output Current ReportingInternal Die Temperature Monitoring2 PMBus Addresses (Master 36d/Slave 37d)Selectable Boot-up Vout and Soft Start Values via Pin-StrappingProgrammable via the PMBus Interface:OCP, UVLO, Soft-Start, PG, OV, UV, OT Levels, Fault ResponsesTurnon and Turnoff DelaysThermal ShutdownPin Strapping for Switching Frequency: 200 kHz to 1 MHzFrequency Synchronization to an External Clock or Output Clock to Sync OutCreate a Custom Design Using the TPS546C20A With theWEBENCH®Power DesignerPMBus™ 1.3 Compliant Converters: 35 A2-Device Stackable for up to 70 A With Current SharingInput Voltage Range: 4.5 V to 18 VOutput Voltage Range: 0.35 V to 5.5 VIntegrated 3.2-mΩ and 1.4-mΩ Stacked NexFET™ Power Stage350-mV to 1650-mV Reference for Adaptive Voltage Scaling (AVS) Function and Margining through PMBus0.5% Reference Accuracy at 600 mV and AboveLossless Low-Side MOSFET Current SensingVoltage Mode Control With Input Feed-ForwardDifferential Remote SensingMonotonic Start-Up into Pre-Biased OutputOutput Voltage and Output Current ReportingInternal Die Temperature Monitoring2 PMBus Addresses (Master 36d/Slave 37d)Selectable Boot-up Vout and Soft Start Values via Pin-StrappingProgrammable via the PMBus Interface:OCP, UVLO, Soft-Start, PG, OV, UV, OT Levels, Fault ResponsesTurnon and Turnoff DelaysThermal ShutdownPin Strapping for Switching Frequency: 200 kHz to 1 MHzFrequency Synchronization to an External Clock or Output Clock to Sync OutCreate a Custom Design Using the TPS546C20A With theWEBENCH®Power Designer

Description

The TPS546C20A devices are PMBus 1.3 Compliant, non-isolated DC/DC converters with integrated FETs, capable of high-frequency operation and 35-A current output from a 7-mm × 5-mm package. Two TPS546C20A devices can be paralleled together to provide up to 70-A load. Current sensing is realized by sampling a small portion of the power stage current and independent on the device temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS functions through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current, and internal die temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements. The TPS546C20A devices are PMBus 1.3 Compliant, non-isolated DC/DC converters with integrated FETs, capable of high-frequency operation and 35-A current output from a 7-mm × 5-mm package. Two TPS546C20A devices can be paralleled together to provide up to 70-A load. Current sensing is realized by sampling a small portion of the power stage current and independent on the device temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS functions through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current, and internal die temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.