TPS5420D | Texas Instruments

Step-Down Converter, TPS5420D, Texas Instruments

The TPS5420D 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 is 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 TPS5420D feedback loop is internally compensated.#

Features

• Internal Compensation Minimizes External Parts Count
• Improved Line Regulation and Transient Response by Input Voltage Feed Forward
• System Protected by Over Current Limiting, Over Voltage Protection and Thermal Shutdown

Applications

• Industrial and Car Audio Power Supplies
• Battery Chargers, High Power LED Supply