TPS5430DDARG4
3A step-down voltage regulator with 5.5V to 36V input range
Manufacturer： ti
series introduction
# TPS5430DDARG4 Product Series Introduction
## 1. Overview
The TPS5430DDARG4 is a highly efficient and versatile step - down (buck) DC - DC converter integrated circuit (IC) offered by Texas Instruments. This product series is designed to meet the power conversion needs of a wide range of electronic devices, providing a reliable and stable power supply solution.
## 2. Key Features
### 2.1 High Efficiency
- The TPS5430DDARG4 features a high - efficiency synchronous rectification topology. This design significantly reduces power losses compared to traditional non - synchronous converters. It can achieve efficiency levels of up to 95% under typical operating conditions. High efficiency not only reduces power consumption but also helps in minimizing heat generation, which is crucial for the long - term reliability of the device and the overall system.
### 2.2 Wide Input Voltage Range
- It supports a wide input voltage range, typically from 4.5V to 28V. This wide range makes it suitable for various power sources, such as batteries (e.g., lithium - ion batteries with different cell configurations) and regulated or unregulated DC power supplies. For example, in automotive applications, where the battery voltage can vary depending on the charging state and the vehicle's electrical system, the wide input voltage range allows the TPS5430DDARG4 to operate stably.
### 2.3 Adjustable Output Voltage
- The output voltage of the TPS5430DDARG4 can be easily adjusted using an external resistor divider network. The adjustable output voltage range is typically from 0.8V to the input voltage minus a small dropout voltage. This flexibility enables the device to be used in different applications that require specific output voltages, such as powering microcontrollers, digital signal processors (DSPs), and other integrated circuits with different power requirements.
### 2.4 Integrated Power MOSFETs
- The converter integrates both the high - side and low - side power MOSFETs on - chip. This integration simplifies the design process by reducing the number of external components required. It also helps in saving board space, which is especially important in compact electronic devices. Additionally, the integrated MOSFETs are optimized for low on - resistance, further improving the overall efficiency of the converter.
### 2.5 Current - Mode Control
- The TPS5430DDARG4 utilizes current - mode control architecture. This control method provides fast transient response, excellent line and load regulation, and inherent cycle - by - cycle current limiting. In applications where the load current can change rapidly, such as in portable devices with burst - mode operation or in systems with dynamic loads, the current - mode control ensures that the output voltage remains stable and well - regulated.
### 2.6 Thermal Shutdown and Over - Current Protection
- To ensure the safety and reliability of the device, the TPS5430DDARG4 is equipped with thermal shutdown and over - current protection features. The thermal shutdown function automatically turns off the converter when the junction temperature exceeds a certain threshold, preventing damage due to overheating. The over - current protection limits the output current to a safe level, protecting the device and the load from excessive current in case of a short - circuit or other fault conditions.
## 3. Applications
### 3.1 Industrial Applications
- In industrial automation systems, the TPS5430DDARG4 can be used to power various control modules, sensors, and communication interfaces. Its wide input voltage range and high efficiency make it suitable for use in industrial environments where power sources may be unstable or subject to fluctuations. For example, it can be used to power programmable logic controllers (PLCs), motor control units, and industrial Ethernet interfaces.
### 3.2 Automotive Electronics
Images for reference
DDA-8-SOIC Pkg
Image Preview
Image Preview