The TPS542A50 is a high-efficiency, single-channel, synchronous buck converter with integrated n-channel MOSFETs. The device suits low-output voltage point-of-load applications with 15-A or lower current. The TPS542A50 has a maximum operating junction temperature of 150°C, which makes it suitable for high-ambient temperature applications such as wireless infrastructure. The input voltage range is 4 V to 18 V, and the output voltage range is 0.5 V to 5.5 V. The device features a fixed-frequency voltage-control mode with a switching frequency range of 400 kHz to 2.2 MHz, allowing for efficiency and size optimization when selecting output filter components. The controller features selectable internal compensation making the device easy to use with a low external-component count. The internal compensation networks are able to support a wide range of output inductance and capacitance, supporting all types of capacitors. The controller utilizes a digital PWM modulator that allows for very narrow on-times making it ideal for high-frequency and high-step down ratio applications. The switching frequency of the device can be synchronized to an external clock applied to the SYNC pin. The TPS542A50 also features an I²C interface for device configuration and output voltage adjustments.