Overview
The TPS54232DR is a 28-V, 2-A step-down (buck) converter produced by Texas Instruments. This device integrates a low RDS(on) high-side n-channel MOSFET, making it suitable for high-efficiency power supply designs. The TPS54232DR operates with a fixed 1-MHz switching frequency and features a pulse-skipping Eco-Mode to enhance efficiency at light loads. It also includes various protection mechanisms such as cycle-by-cycle current limit, frequency foldback, and thermal shutdown. The device is available in an 8-pin SOIC package and is supported by the WEBENCH software tool for ease of design and optimization.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.5 to 28 | V |
| Output Voltage Range | Down to 0.8 | V |
| Output Current | Up to 2 | A |
| Switching Frequency | 1 MHz | |
| Shutdown Quiescent Current | Typical 1 μA | A |
| Operating Junction Temperature | -40 to 150 | °C |
| Package Type | 8-Pin SOIC (D) | |
| Thermal Shutdown | 165 °C | °C |
Key Features
- 3.5-V to 28-V input voltage range
- Adjustable output voltage down to 0.8 V
- Integrated 80-mΩ high-side MOSFET supporting up to 2-A continuous output current
- High efficiency at light loads with pulse-skipping Eco-Mode
- Fixed 1-MHz switching frequency
- Typical 1-μA shutdown quiescent current
- Adjustable slow-start limits inrush currents
- Programmable UVLO threshold
- Overvoltage transient protection
- Cycle-by-cycle current limit, frequency foldback, and thermal shutdown protection
- Available in 8-pin SOIC package
- Supported by WEBENCH software tool
Applications
- Consumer applications such as set-top boxes, CPE equipment, LCD displays, peripherals, and battery chargers
- Industrial and car audio power supplies
- 5-V, 12-V, and 24-V distributed power systems
Q & A
- What is the input voltage range of the TPS54232DR?
The input voltage range is from 3.5 V to 28 V.
- What is the maximum output current of the TPS54232DR?
The maximum output current is up to 2 A.
- What is the switching frequency of the TPS54232DR?
The switching frequency is fixed at 1 MHz.
- What is the typical shutdown quiescent current of the TPS54232DR?
The typical shutdown quiescent current is 1 μA.
- What protection mechanisms are included in the TPS54232DR?
The device includes cycle-by-cycle current limit, frequency foldback, and thermal shutdown protection.
- What package type is the TPS54232DR available in?
The device is available in an 8-pin SOIC (D) package.
- What is the thermal shutdown temperature of the TPS54232DR?
The thermal shutdown temperature is 165 °C.
- Does the TPS54232DR support any specific software tools?
Yes, it is supported by the WEBENCH software tool.
- What are some common applications for the TPS54232DR?
Common applications include consumer electronics, industrial power supplies, and distributed power systems.
- How does the TPS54232DR enhance efficiency at light loads?
The device enters a pulse-skipping Eco-Mode at light loads to enhance efficiency.
