Overview
The TPS54231DR is a 2-A, 28-V input, step-down (buck) DC-DC converter produced by Texas Instruments. This device integrates a low RDS(on) high-side n-channel MOSFET, making it highly efficient and suitable for a wide range of applications. The TPS54231DR features a pulse skipping Eco-mode™ to increase efficiency at light loads and a low shutdown supply current of 1 µA, which is beneficial for battery-powered applications. The device uses current mode control with internal slope compensation, simplifying external compensation calculations and allowing the use of ceramic output capacitors.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 3.5 V to 28 V |
| Output Voltage Range | Adjustable down to 0.8 V |
| Maximum Output Current | 2 A |
| Switching Frequency | 570 kHz (fixed) |
| Shutdown Quiescent Current | Typical 1 µA |
| MOSFET | Integrated 80-mΩ high-side MOSFET |
| Package | 8-pin SOIC |
| Operating Temperature Range | -40°C to 150°C |
Key Features
- Wide input voltage range of 3.5 V to 28 V
- Adjustable output voltage down to 0.8 V
- Integrated 80-mΩ high-side MOSFET
- Supports up to 2 A continuous output current
- Pulse skipping Eco-mode™ for high efficiency at light loads
- Fixed 570-kHz switching frequency
- Typical 1-µA shutdown quiescent current
- Adjustable slow-start to limit inrush currents
- Programmable UVLO (Undervoltage Lockout) threshold
- Overvoltage transient protection
- Cycle-by-cycle current limit, frequency fold back, and thermal shutdown protection
- Available in an 8-pin SOIC package optimized for thermal performance
- Supported by WEBENCH® software tool
Applications
- Consumer electronics: set-top boxes, CPE equipment, LCD displays, peripherals, and battery chargers
- Industrial equipment: power supplies, manufacturing machinery, automated systems, and process control
- Car audio power supplies
- 5-V, 12-V, and 24-V distributed power systems
- Telecommunications equipment: networking equipment, base stations
- Computing systems: providing stable power to components like processors, memory, and peripherals
- Networking devices
Q & A
- What is the TPS54231DR, and what is its primary function?
The TPS54231DR is a 2-A, 28-V input, step-down (buck) DC-DC converter that integrates a low RDS(on) high-side MOSFET. Its primary function is to regulate and provide a stable output voltage from varying input voltage sources.
- What input voltage range does the TPS54231DR support?
The TPS54231DR supports an input voltage range of 3.5 V to 28 V.
- Does the TPS54231DR have an adjustable output voltage range?
Yes, the TPS54231DR has an adjustable output voltage range down to 0.8 V.
- What type of voltage regulation topology does the TPS54231DR use?
The TPS54231DR uses a step-down (buck) topology.
- What are the key features of the TPS54231DR?
The key features include a wide input voltage range, adjustable output voltage, integrated high-side MOSFET, pulse skipping Eco-mode, fixed switching frequency, low shutdown quiescent current, and various protection mechanisms.
- What is the switching frequency of the TPS54231DR?
The switching frequency is fixed at 570 kHz.
- What is the typical shutdown quiescent current of the TPS54231DR?
The typical shutdown quiescent current is 1 µA.
- What kind of protection mechanisms does the TPS54231DR have?
The TPS54231DR features cycle-by-cycle current limit, frequency fold back, thermal shutdown, and overvoltage transient protection.
- What package type is the TPS54231DR available in?
The TPS54231DR is available in an 8-pin SOIC package.
- Is the TPS54231DR supported by any software tools?
Yes, the TPS54231DR is supported by the WEBENCH® software tool.
