TPS54541 Series
4.5V to 42V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™
Manufacturer: Texas Instruments
Catalog(3 parts)
| Part | Frequency - Switching▲▼ | Current - Output▲▼ | Outputs and Type | Outputs and Type▲▼ | Voltage - Input▲▼ | Voltage - Input▲▼ | Utilized IC / Part | Board Type | Voltage - Output▲▼ | Main Purpose | Supplied Contents | Output Configuration | Voltage - Output (Max)▲▼ | Synchronous Rectifier▲▼ | Output Type | Package / Case | Frequency - Switching▲▼ | Frequency - Switching▲▼ | Mounting Type | Voltage - Input (Min)▲▼ | Number of Outputs▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Voltage - Output (Min/Fixed)▲▼ | Supplier Device Package | Topology | Voltage - Input (Max)▲▼ | Function |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS54541EVM-555TPS54541 - DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board | 400000 Hz | 5 A | Non-Isolated | 1 ul | 6 V | 42 V | TPS54541 | Fully Populated | 3.299999952316284 V | DC/DC, Step Down | Board(s) | |||||||||||||||||
Texas Instruments TPS54541DPRRBuck, Split Rail Switching Regulator IC Positive Adjustable 0.8V 1 Output 5A 10-WDFN Exposed Pad | 5 A | Positive | 41 V | Adjustable | 10-WDFN Exposed Pad | 100000 Hz | 2500000 Hz | Surface Mount | 4.5 V | 1 ul | 85 °C | -40 °C | 0.800000011920929 V | 10-WSON (4x4) | Buck, Split Rail | 42 V | Step-Down | |||||||||||
Texas Instruments TPS54541DPRTBuck, Split Rail Switching Regulator IC Positive Adjustable 0.8V 1 Output 5A 10-WDFN Exposed Pad | 5 A | Positive | 41 V | Adjustable | 10-WDFN Exposed Pad | 100000 Hz | 2500000 Hz | Surface Mount | 4.5 V | 1 ul | 85 °C | -40 °C | 0.800000011920929 V | 10-WSON (4x4) | Buck, Split Rail | 42 V | Step-Down |
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
AI
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.