TPS546D24S Series

2.95-V to 16-V, stackable 40-A synchronous SWIFT™ step-down PMBus® converter with extended security

Catalog

2.95-V to 16-V, stackable 40-A synchronous SWIFT™ step-down PMBus® converter with extended security

Part	Output Type	Voltage - Output (Max) [Max]	Current - Output	Voltage - Input (Min) [Min]	Topology	Package / Case	Voltage - Output (Min/Fixed)	Mounting Type	Voltage - Input (Max) [Max]	Number of Outputs	Function	Supplier Device Package	Frequency - Switching [Max]	Frequency - Switching [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Output Configuration	Regulator Topology	Board Type	Supplied Contents	Voltage - Input [Min]	Voltage - Input [Max]	Frequency - Switching	Outputs and Type	Outputs and Type	Voltage - Output	Main Purpose	Utilized IC / Part
Texas Instruments TPS546D24RVFR
Texas Instruments TPS546B24SRVFR	Programmable	5.5 V	20 A	2.95 V	Buck	40-PowerLFQFN	0.25 V	Surface Mount	18 V	1	Step-Down	40-LQFN-CLIP (7x5)	1.5 MHz	225 kHz	150 °C	-40 °C	Positive
Texas Instruments TPS546C20ARVFR	Adjustable	5.5 V	35 A	4.5 V	Buck	40-PowerLFQFN	0.35 V	Surface Mount	18 V	1	Step-Down	40-LQFN-CLIP (7x5)	1 MHz	200 kHz	125 ¯C	-40 °C	Positive
Texas Instruments TPS546D24SRVFR	Programmable	5.5 V	40 A	2.95 V	Buck	40-PowerLFQFN	0.25 V	Surface Mount	16 V	1	Step-Down	40-LQFN-CLIP (7x5)	1.5 MHz	225 kHz	150 °C	-40 °C	Positive
Texas Instruments TPS546B24AEVM-1PH			20 A															Buck	Fully Populated	Board(s)	2.95 V	18 V	650 kHz	Non-Isolated	1	1.2 V	DC/DC Step Down	TPS546B24A
Texas Instruments TPS546C23EVM2-746			70 A															Buck	Fully Populated	Board(s)	5 V	18 V	500 kHz	Non-Isolated	1	1.2 V	DC/DC Step Down	TPS546C23
Texas Instruments TPS546C20AEVM1-746			35 A															Buck	Fully Populated	Board(s)	5 V	18 V	500 kHz	Non-Isolated	2	0.9 V 0.95 V	DC/DC Step Down	TPS546C20A
Texas Instruments TPS546B24ARVFR	Adjustable	5.5 V	20 A	2.95 V	Buck	40-PowerLFQFN	0.6 V	Surface Mount	18 V	1	Step-Down	40-LQFN-CLIP (7x5)	1.5 MHz	225 kHz	150 °C	-40 °C	Positive
Texas Instruments TPS546C23ZRVFT	Adjustable	5.5 V	35 A	4.5 V	Buck	40-PowerLFQFN	0.35 V	Surface Mount	18 V	1	Step-Down	40-LQFN-CLIP (7x5)	1 MHz	200 kHz	125 ¯C	-40 °C	Positive
Texas Instruments TPS546A24SRVFR	Programmable	5.5 V	10 A	2.95 V	Buck	40-PowerLFQFN	0.25 V	Surface Mount	18 V	1	Step-Down	40-LQFN-CLIP (7x5)	1.5 MHz	225 kHz	150 °C	-40 °C	Positive

Catalog

2.95-V to 16-V, stackable 40-A synchronous SWIFT™ step-down PMBus® converter with extended security

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 TPS546D24S is a highly integrated, non-isolated DC/DC converter that expands on the TPS546D24A by adding manufacturer-specific PMBus commands and Extended Write Protect and Passkey. This feature improves security against malicious access to the PMBus by restricting Write capability with greater resolution than the standard Write Protect command. TPS546D24S is capable of high frequency operation and 40-A current output from a 7-mm × 5-mm package. Two, three, and four TPS546D24S devices can be interconnected to provide up to 160 A on a single output. The device has an option to overdrive the internal 5-V LDO with an external 5-V supply through the VDD5 pin to improve efficiency and reduce power dissipation of the converter. The TPS546D24S uses a proprietary fixed-frequency current-mode control with input feedforward and selectable internal compensation components for minimal size and stability over a wide range of output capacitances. The PMBus interface with 1-MHz clock support gives a convenient, standardized digital interface for converter configuration as well as monitoring of key parameters including output voltage, output current, and internal die temperature. Response to fault conditions can be set to restart, latch off, or ignore, depending on system requirements. Back-channel communication between stacked devices enables all TPS546D24S converters powering a single output rail to share a single address to simplify system software/firmware design. Key parameters including output voltage, switching frequency, soft-start time, and overcurrent fault limits can also be configured through BOM selection without PMBus communication to support program free power up. The TPS546D24S is a highly integrated, non-isolated DC/DC converter that expands on the TPS546D24A by adding manufacturer-specific PMBus commands and Extended Write Protect and Passkey. This feature improves security against malicious access to the PMBus by restricting Write capability with greater resolution than the standard Write Protect command. TPS546D24S is capable of high frequency operation and 40-A current output from a 7-mm × 5-mm package. Two, three, and four TPS546D24S devices can be interconnected to provide up to 160 A on a single output. The device has an option to overdrive the internal 5-V LDO with an external 5-V supply through the VDD5 pin to improve efficiency and reduce power dissipation of the converter. The TPS546D24S uses a proprietary fixed-frequency current-mode control with input feedforward and selectable internal compensation components for minimal size and stability over a wide range of output capacitances. The PMBus interface with 1-MHz clock support gives a convenient, standardized digital interface for converter configuration as well as monitoring of key parameters including output voltage, output current, and internal die temperature. Response to fault conditions can be set to restart, latch off, or ignore, depending on system requirements. Back-channel communication between stacked devices enables all TPS546D24S converters powering a single output rail to share a single address to simplify system software/firmware design. Key parameters including output voltage, switching frequency, soft-start time, and overcurrent fault limits can also be configured through BOM selection without PMBus communication to support program free power up.