仕様
| 属性 | 値 |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Series | D-CAP2™, Eco-Mode™ |
| ProductStatus | Active |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 4.5V |
| Voltage-Input(Max) | 18V |
| Voltage-Output(Min/Fixed) | 0.76V |
| Voltage-Output(Max) | 7V |
| Current-Output | 2A |
| Frequency-Switching | 700kHz |
| SynchronousRectifier | Yes |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 8-PowerSOIC (0.154, 3.90mm Width) |
概要
Description
The TPS54228DDAR is a high-efficiency, synchronous buck converter from Texas Instruments, designed for compact and power-efficient applications. It features a 4.5 V to 18 V input voltage range and delivers up to 2 A of continuous output current, making it suitable for a variety of power regulation tasks in electronics. The device operates at a fixed switching frequency of 700 kHz, optimizing it for efficiency and compactness by minimizing the size of external components required.
Key features include a low 80 mΩ MOSFET switch to reduce conduction losses, a voltage-mode control architecture for improved transient response, and an adjustable output voltage down to 0.8 V, allowing flexibility in application designs. It also incorporates an enable pin, thermal shutdown, and current limit protection to enhance reliability. The TPS54228DDAR is offered in a small SO PowerPAD package, which improves thermal performance. Its design is targeted at applications like consumer electronics, industrial equipment, and communication infrastructure, where space-saving and energy efficiency are critical.
Key features include a low 80 mΩ MOSFET switch to reduce conduction losses, a voltage-mode control architecture for improved transient response, and an adjustable output voltage down to 0.8 V, allowing flexibility in application designs. It also incorporates an enable pin, thermal shutdown, and current limit protection to enhance reliability. The TPS54228DDAR is offered in a small SO PowerPAD package, which improves thermal performance. Its design is targeted at applications like consumer electronics, industrial equipment, and communication infrastructure, where space-saving and energy efficiency are critical.
Equivalent
The TPS54228DDAR is a step-down (buck) converter from Texas Instruments. Equivalent products with similar functionality might include:
1. LM2596 from Texas Instruments - A 3A step-down voltage regulator.
2. MP1584 from MPS (Monolithic Power Systems) - A 3A buck converter.
3. LM2576 from Texas Instruments - Known for a 3A output current.
4. LT8608 from Analog Devices - A low quiescent current step-down regulator.
5. AP3211 from Diodes Incorporated - A 3A buck converter.
Always verify specifications to ensure compatibility.
1. LM2596 from Texas Instruments - A 3A step-down voltage regulator.
2. MP1584 from MPS (Monolithic Power Systems) - A 3A buck converter.
3. LM2576 from Texas Instruments - Known for a 3A output current.
4. LT8608 from Analog Devices - A low quiescent current step-down regulator.
5. AP3211 from Diodes Incorporated - A 3A buck converter.
Always verify specifications to ensure compatibility.
Features
The TPS54228DDAR is a high-efficiency synchronous buck converter designed by Texas Instruments. Key features include:
1. Input Voltage Range: 4.5 V to 18 V, supporting a variety of power sources.
2. Output Current: Capable of delivering up to 2 A of continuous output current.
3. Adjustable Output Voltage: Allows for output voltage to be set between 0.8 V and 6 V using an external resistor divider.
4. High Efficiency: Utilizes synchronous rectification to achieve high efficiency.
5. Switching Frequency: Operates at a fixed frequency of 700 kHz, optimizing power conversion and size.
6. Soft Start: Features an internal soft-start to limit inrush current during startup.
7. Protection Features: Includes overcurrent protection, thermal shutdown, and undervoltage lockout to enhance reliability.
8. Compact Package: Comes in a small 8-pin SO PowerPAD package, which aids in thermal management.
9. Low Output Ripple: Ensures low noise performance suitable for sensitive applications.
These features make the TPS54228DDAR well-suited for applications like consumer electronics, telecommunications, and industrial equipment.
1. Input Voltage Range: 4.5 V to 18 V, supporting a variety of power sources.
2. Output Current: Capable of delivering up to 2 A of continuous output current.
3. Adjustable Output Voltage: Allows for output voltage to be set between 0.8 V and 6 V using an external resistor divider.
4. High Efficiency: Utilizes synchronous rectification to achieve high efficiency.
5. Switching Frequency: Operates at a fixed frequency of 700 kHz, optimizing power conversion and size.
6. Soft Start: Features an internal soft-start to limit inrush current during startup.
7. Protection Features: Includes overcurrent protection, thermal shutdown, and undervoltage lockout to enhance reliability.
8. Compact Package: Comes in a small 8-pin SO PowerPAD package, which aids in thermal management.
9. Low Output Ripple: Ensures low noise performance suitable for sensitive applications.
These features make the TPS54228DDAR well-suited for applications like consumer electronics, telecommunications, and industrial equipment.
Pinout
The TPS54228DDAR is a step-down converter from Texas Instruments. It comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here's a brief overview of its pin functions:
1. BOOT: Supplies the drive voltage to the high-side MOSFET driver.
2. VIN: Input voltage supply.
3. EN: Enable pin; used to turn the device on or off.
4. SS/TR: Soft-start/tracking pin; used for controlling the soft-start time.
5. GND: Ground pin.
6. VSENSE: Feedback voltage pin; connected to the output for voltage regulation.
7. COMP: Compensation pin; used for loop compensation.
8. SW: Switch node; connects to the inductor and switches between VIN and GND.
The device is designed for high-efficiency applications, providing a 2A continuous output current with an adjustable output voltage. It is commonly used in applications like consumer electronics, networking, and industrial systems.
1. BOOT: Supplies the drive voltage to the high-side MOSFET driver.
2. VIN: Input voltage supply.
3. EN: Enable pin; used to turn the device on or off.
4. SS/TR: Soft-start/tracking pin; used for controlling the soft-start time.
5. GND: Ground pin.
6. VSENSE: Feedback voltage pin; connected to the output for voltage regulation.
7. COMP: Compensation pin; used for loop compensation.
8. SW: Switch node; connects to the inductor and switches between VIN and GND.
The device is designed for high-efficiency applications, providing a 2A continuous output current with an adjustable output voltage. It is commonly used in applications like consumer electronics, networking, and industrial systems.
Manufacturer
The TPS54228DDAR is manufactured by Texas Instruments Incorporated. Texas Instruments, commonly referred to as TI, is an American technology company that designs and manufactures semiconductors and various integrated circuits. These products are used in a wide range of electronic applications, including industrial, automotive, personal electronics, and communications equipment. Founded in 1930 and headquartered in Dallas, Texas, TI is one of the largest semiconductor companies in the world. The company is known for its innovation in analog and embedded processing products, which are crucial for a variety of applications that require efficient power management, data conversion, and processing capabilities.
Application
The TPS54228DDAR is a synchronous buck converter commonly used in various applications due to its efficiency and compact design. Key application areas include:
1. Telecommunications Equipment: Provides stable power for networking devices.
2. Consumer Electronics: Powers devices like set-top boxes, digital TVs, and gaming consoles.
3. Computer Systems: Used in desktop and notebook PCs for efficient power management.
4. Industrial Equipment: Supports automation and control systems with reliable power delivery.
5. Embedded Systems: Ideal for microcontrollers and FPGA power supply.
6. Automotive Electronics: Used in infotainment systems and advanced driver-assistance systems (ADAS).
These applications benefit from the device's ability to deliver high efficiency and low output ripple.
1. Telecommunications Equipment: Provides stable power for networking devices.
2. Consumer Electronics: Powers devices like set-top boxes, digital TVs, and gaming consoles.
3. Computer Systems: Used in desktop and notebook PCs for efficient power management.
4. Industrial Equipment: Supports automation and control systems with reliable power delivery.
5. Embedded Systems: Ideal for microcontrollers and FPGA power supply.
6. Automotive Electronics: Used in infotainment systems and advanced driver-assistance systems (ADAS).
These applications benefit from the device's ability to deliver high efficiency and low output ripple.
Package
The TPS54228DDAR is a DC-DC buck converter from Texas Instruments. It comes in an 8-pin SOIC (Small Outline Integrated Circuit) package with a PowerPAD for enhanced thermal performance.
