TPS54541 Series

4.5V to 42V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

Catalog

4.5V to 42V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

Part	Current - Output	Main Purpose	Frequency - Switching	Utilized IC / Part	Board Type	Voltage - Output	Supplied Contents	Outputs and Type	Outputs and Type	Voltage - Input [Max]	Voltage - Input [Min]	Regulator Topology	Voltage - Input (Min) [Min]	Voltage - Input (Max) [Max]	Number of Outputs	Mounting Type	Topology	Function	Voltage - Output (Min/Fixed)	Output Type	Voltage - Output (Max) [Max]	Output Configuration	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Frequency - Switching [Max]	Frequency - Switching [Min]
Texas Instruments TPS54541EVM-555	5 A	DC/DC Step Down	400 kHz	TPS54541	Fully Populated	3.3 V	Board(s)	Non-Isolated	1	42 V	6 V	Buck
Texas Instruments TPS54541DPRR	5 A												4.5 V	42 V	1	Surface Mount	Buck Split Rail	Step-Down	0.8 V	Adjustable	41 V	Positive	10-WDFN Exposed Pad	85 °C	-40 °C	10-WSON (4x4)	2.5 MHz	100 kHz
Texas Instruments TPS54541DPRT	5 A												4.5 V	42 V	1	Surface Mount	Buck Split Rail	Step-Down	0.8 V	Adjustable	41 V	Positive	10-WDFN Exposed Pad	85 °C	-40 °C	10-WSON (4x4)	2.5 MHz	100 kHz

Catalog

4.5V to 42V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

Key Features

• High Efficiency at Light Loads with Pulse Skipping Eco-mode™87-mΩ High-Side MOSFET152-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 HysteresisUV and OV Power-Good OutputAdjustable Soft-Start and Sequencing0.8-V 1% Internal Voltage Reference10-Pin WSON with Thermal Pad Package–40°C to 150°C TJOperating RangeCreate a Custom Design using the TPS54541 with theWEBENCH® Power DesignerHigh Efficiency at Light Loads with Pulse Skipping Eco-mode™87-mΩ High-Side MOSFET152-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 HysteresisUV and OV Power-Good OutputAdjustable Soft-Start and Sequencing0.8-V 1% Internal Voltage Reference10-Pin WSON with Thermal Pad Package–40°C to 150°C TJOperating RangeCreate a Custom Design using the TPS54541 with theWEBENCH® Power Designer

Description

The TPS54541 device is a 42-V 5-A step-down regulator with an integrated high-side MOSFET. The device survives load dump pulses up to 45 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 152 µA. When the enable pin is pulled low, the shutdown supply current is reduced to 2 µA. Undervoltage lockout is internally set at 4.3 V but can increase using an external resistor divider at the enable pin. The output voltage startup ramp is controlled by the soft-start pin that can also be configured for sequencing and tracking. An open-drain power-good signal indicates the output is within 93% to 106% of the nominal voltage. A wide adjustable switching-frequency range allows for optimization of either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback, and thermal shutdown protect internal and external components during an overload condition. The TPS54541 device is available in a 10-pin 4-mm × 4-mm WSON package. The TPS54541 device is a 42-V 5-A step-down regulator with an integrated high-side MOSFET. The device survives load dump pulses up to 45 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 152 µA. When the enable pin is pulled low, the shutdown supply current is reduced to 2 µA. Undervoltage lockout is internally set at 4.3 V but can increase using an external resistor divider at the enable pin. The output voltage startup ramp is controlled by the soft-start pin that can also be configured for sequencing and tracking. An open-drain power-good signal indicates the output is within 93% to 106% of the nominal voltage. A wide adjustable switching-frequency range allows for optimization of either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback, and thermal shutdown protect internal and external components during an overload condition. The TPS54541 device is available in a 10-pin 4-mm × 4-mm WSON package.