TPS563211 Synchronous Buck Converter

Texas Instruments' TPS563211 is a cost-effective and highly flexible synchronous buck converter that provides selectable Eco-mode operation or force continuous conduction mode (FCCM) operation. A selectable Power-Good indicator or external soft-start is configurable through the MODE pin. Power sequencing is possible by correctly configuring the enable, Power-Good indicator, or the external soft-start. A wide input voltage range of 4.2 V to 18 V supports a variety of common input rails such as 12 V and 15 V. The converter supports up to 3 A continuous output current at output voltages between 0.6 V and 7 V.

The TPS563211 provides a fast transient response with true fixed-switching frequency through the advanced emulated current mode (AECM) control topology. With internal smart loop bandwidth control, the converter provides a  fast transient response over a wide output voltage range without the need for external compensation. The cycle-by-cycle current limit on the high-side peak current protects the device in overload situations and is enhanced by a low-side valley current limit preventing current runaway. Hiccup mode is triggered under overvoltage protection (OVP), undervoltage protection (UVP), UVLO protection, and thermal shutdown. The device is available in a 1.6 mm x 2.1 mm SOT583 package.