TPS54540B-Q1 Series

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

Catalog

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

Part	Output Type	Voltage - Input (Min) [Min]	Number of Outputs	Mounting Type	Topology	Current - Output	Voltage - Input (Max) [Max]	Supplier Device Package	Package / Case [y]	Package / Case [x]	Package / Case	Voltage - Output (Max) [Max]	Output Configuration	Function	Voltage - Output (Min/Fixed)	Frequency - Switching [Max]	Frequency - Switching [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input [Min]	Voltage - Input [Max]	Outputs and Type	Outputs and Type	Supplied Contents	Voltage - Output	Utilized IC / Part	Regulator Topology	Board Type	Frequency - Switching	Main Purpose	Grade	Qualification
Texas Instruments TPS54540BDDA	Adjustable	4.5 V	1	Surface Mount	Buck Split Rail	5 A	42 V	8-SO PowerPad	3.9 mm	0.154 in	8-PowerSOIC	41.1 V	Positive	Step-Down	0.8 V	2.5 MHz	100 kHz	150 °C	-40 °C
Texas Instruments TPS54540DDAR	Adjustable	4.5 V	1	Surface Mount	Buck Split Rail	5 A	42 V	8-SO PowerPad	3.9 mm	0.154 in	8-PowerSOIC	41.1 V	Positive	Step-Down	0.8 V	2.5 MHz	100 kHz	150 °C	-40 °C
Texas Instruments TPS54540-Q1EVM-593						5 A														7 V	42 V	Non-Isolated	1	Board(s)	5 V	TPS54540-Q1	Buck	Fully Populated	400 kHz	DC/DC Step Down
Texas Instruments TPS54540DDA	Adjustable	4.5 V	1	Surface Mount	Buck Split Rail	5 A	42 V	8-SO PowerPad	3.9 mm	0.154 in	8-PowerSOIC	41.1 V	Positive	Step-Down	0.8 V	2.5 MHz	100 kHz	150 °C	-40 °C
Texas Instruments TPS54540EVM-558						5 A														6 V	42 V	Non-Isolated	1	Board(s)	3.3 V		Buck	Fully Populated	400 kHz	DC/DC Step Down
Texas Instruments TPS54540BQDDARQ1	Adjustable	4.5 V	1	Surface Mount	Buck Split Rail	5 A	42 V	8-SO PowerPad	3.9 mm	0.154 in	8-PowerSOIC	41.1 V	Positive	Step-Down	0.8 V	2.5 MHz	100 kHz	125 °C	-40 °C												Automotive	AEC-Q100
Texas Instruments TPS54540BDDAR	Adjustable	4.5 V	1	Surface Mount	Buck Split Rail	5 A	42 V	8-SO PowerPad	3.9 mm	0.154 in	8-PowerSOIC	41.1 V	Positive	Step-Down	0.8 V			150 °C	-40 °C										500 kHz

Catalog

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

Key Features

• Qualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature RangeDevice HBM ESD Classification Level H1CDevice CDM ESD Classification Level C3BHigh-Efficiency at Light Loads With Pulse-Skipping Eco-mode™92-mΩ High-Side MOSFET146-µA Operating Quiescent Current and 2-µA Shutdown Current100-kHz to 2.5-MHz Adjustable Switching FrequencySynchronizes to External ClockLow Dropout at Light Loads With Integrated BOOT Recharge FETAdjustable UVLO Voltage and Hysteresis0.8-V 1% Internal Voltage Reference8-Pin HSOP PowerPAD™ Package–40°C to 150°C TJOperating RangeSupported by WEBENCH Software ToolQualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature RangeDevice HBM ESD Classification Level H1CDevice CDM ESD Classification Level C3BHigh-Efficiency at Light Loads With Pulse-Skipping Eco-mode™92-mΩ High-Side MOSFET146-µA Operating Quiescent Current and 2-µA Shutdown Current100-kHz to 2.5-MHz Adjustable Switching FrequencySynchronizes to External ClockLow Dropout at Light Loads With Integrated BOOT Recharge FETAdjustable UVLO Voltage and Hysteresis0.8-V 1% Internal Voltage Reference8-Pin HSOP PowerPAD™ Package–40°C to 150°C TJOperating RangeSupported by WEBENCH Software Tool

Description

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. The TPS54540B-Q1 is available in an 8-pin thermally-enhanced HSOP PowerPAD package. 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. The TPS54540B-Q1 is available in an 8-pin thermally-enhanced HSOP PowerPAD package.