TPS5430DDA Description

The TPS5430 is a high-output-current PWM converter that integrates a low resistance high side N-channel MOSFET. Included on the substrate with the listed features are a high performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 μA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5430 feedback loop is internally compensated. The TPS5430 regulates a wide variety of power sources including 24-V bus.

The TPS5430 device is available in a thermally enhanced, easy to use 8-pin SOIC PowerPAD^TM package. TI provides evaluation modules and the Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

TPS5430DDA Features

• Wide Input Voltage Range: 5.5 V to 36 V

• Up to 3-A Continuous (4-A Peak) Output Current

• High Efficiency up to 95% Enabled by 110-mΩ Integrated MOSFET Switch

• Wide Output Voltage Range: Adjustable Down to 1.22 V with 1.5% Initial Accuracy

• Internal Compensation Minimizes External Parts Count

• Fixed 500 kHz Switching Frequency for Small Filter Size

• Improved Line Regulation and Transient Response by Input Voltage Feed Forward

• System Protected by Overcurrent Limiting, Overvoltage Protection and Thermal Shutdown

• -40 °C to 125 °C Operating Junction Temperature Range

• Available in Small Thermally Enhanced 8-Pin SOlC PowerPAD^TM Package

TPS5430DDA Applications

• Consumer: Set-top Box, DVD, LCD Displays

• Industrial and Car Audio Power Supplies

• Battery Chargers, High Power LED Supply

• 12-V/24-V Distributed Power Systems

• 5G Communication

• Electrification of automobile

• Industrial 4.0