TPS54540DDAR

NRND

Texas Instruments

SWITCHING VOLTAGE REGULATORS 42V 5A SD DC-DC CONV ERTER A 595-TPS54540DDA

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TPS54540DDAR

NRND

Texas Instruments

SWITCHING VOLTAGE REGULATORS 42V 5A SD DC-DC CONV ERTER A 595-TPS54540DDA

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Description Specifications Series Pricing CAD Documents

Description

General part information

TPS54540 Series

The TPS54540B-Q1 device is a 42-V, 5-A, step-down regulator with an integrated high-side MOSFET. The device survives load-dump pulses up to 65 V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using an external resistor divider at the enable pin. The output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot.

A wide adjustable frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protect internal and external components during an overload condition.

Technical Specifications

Parameters and characteristics for this part

Specification	TPS54540DDAR

Current - Output	5 A
Frequency - Switching (Max)	2.5 MHz
Frequency - Switching (Min)	100 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package Length	0.154 in
Package Name	8-PowerSOIC, 8-SO PowerPad
Package Width	3.9 mm
Synchronous Rectifier	No
Topology	Buck, Split Rail
Voltage - Input (Max)	42 V
Voltage - Input (Min)	4.5 V
Voltage - Output (Max)	41.1 V
Voltage - Output (Min/Fixed)	0.8 V

TPS54540 Series

4.5-V to 42-V input, 5-A, step-down DC-DC converter with Eco-mode™

Part	Number of Outputs	Current - Output	Synchronous Rectifier	Operating Temperature (Min)	Operating Temperature (Max)	Package Name	Output Type	Mounting Type	Output Configuration	Voltage - Output (Min/Fixed)	Voltage - Input (Min)	Package Width	Package Length	Voltage - Output (Max)	Topology	Function	Voltage - Input (Max)	Frequency - Switching (Max)	Frequency - Switching (Min)	Supplied Contents	Total Output Count	Non-Isolated Output Count	Board Type	Contents	Voltage - Output	Main Purpose	Utilized IC / Part	Frequency - Switching	Regulator Topology	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Grade	Qualification
Texas Instruments TPS54540BDDA	1	5 A	No	-40 °C	150 °C	8-PowerSOIC 8-SO PowerPad	Adjustable	Surface Mount	Positive	0.8 V	4.5 V	3.9 mm	0.154 in	41.1 V	Buck Split Rail	Step-Down	42 V	2.5 MHz	100 kHz
Texas Instruments TPS54540DDAR	1	5 A	No	-40 °C	150 °C	8-PowerSOIC 8-SO PowerPad	Adjustable	Surface Mount	Positive	0.8 V	4.5 V	3.9 mm	0.154 in	41.1 V	Buck Split Rail	Step-Down	42 V	2.5 MHz	100 kHz
Texas Instruments TPS54540-Q1EVM-593		5 A					Non-Isolated													Board(s)	1	1 count	Fully Populated	Board	5 VDC	DC/DC Step Down	TPS54540-Q1	400 kHz	Buck	7 V	42 V
Texas Instruments TPS54540QDDAQ1	1	5 A	No	-40 °C	150 °C	8-PowerSOIC 8-SO PowerPad	Adjustable	Surface Mount	Positive	0.8 V	4.5 V	3.9 mm	0.154 in	41.1 V	Buck Split Rail	Step-Down	42 V	2.5 MHz	100 kHz													Automotive	AEC-Q100
Texas Instruments TPS54540BQDDAQ1	1	5 A	No	-40 °C	125 °C	8-PowerSOIC 8-SO PowerPad	Adjustable	Surface Mount	Positive	0.8 V	4.5 V	3.9 mm	0.154 in	41.1 V	Buck Split Rail	Step-Down	42 V	2.5 MHz	100 kHz													Automotive	AEC-Q100
Texas Instruments TPS54540DDA	1	5 A	No	-40 °C	150 °C	8-PowerSOIC 8-SO PowerPad	Adjustable	Surface Mount	Positive	0.8 V	4.5 V	3.9 mm	0.154 in	41.1 V	Buck Split Rail	Step-Down	42 V	2.5 MHz	100 kHz
Texas Instruments TPS54540EVM-558		5 A					Non-Isolated													Board(s)	1	1 count	Fully Populated	Board	3.3 V	DC/DC Step Down	TPS54540	400 kHz	Buck	6 V	42 V
Texas Instruments TPS54540BQDDARQ1	1	5 A	No	-40 °C	125 °C	8-PowerSOIC 8-SO PowerPad	Adjustable	Surface Mount	Positive	0.8 V	4.5 V	3.9 mm	0.154 in	41.1 V	Buck Split Rail	Step-Down	42 V	2.5 MHz	100 kHz													Automotive	AEC-Q100
Texas Instruments TPS54540QDDARQ1	1	5 A	No	-40 °C	150 °C	8-PowerSOIC 8-SO PowerPad	Adjustable	Surface Mount	Positive	0.8 V	4.5 V	3.9 mm	0.154 in	41.1 V	Buck Split Rail	Step-Down	42 V	2.5 MHz	100 kHz													Automotive	AEC-Q100
Texas Instruments TPS54540BDDAR	1	5 A	No	-40 °C	150 °C	8-PowerSOIC 8-SO PowerPad	Adjustable	Surface Mount	Positive	0.8 V	4.5 V	3.9 mm	0.154 in	41.1 V	Buck Split Rail	Step-Down	42 V											500 kHz

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Create a Split-Rail Power Supply with a Wide Input Voltage Buck Regulator (Rev. A)

Creating a Universal Car Charger for USB Devices From the TPS54240 and TPS2511 (Rev. E)

Power Management Guide 2018 (Rev. R)

NRND & Differences TPS54340/360/540/560 and TPS54340B/360B/540B/560B

Evaluation Module for the TPS54540 Step-Down Converter

TPS54540 4.5-V to 42-V Input, 5 A, Step Down DC-DC Converter with Eco-mode™ datasheet (Rev. B)

Create an Inverting Power Supply from a Step-Down Regulator (Rev. B)