The TPS54326 is a single, adaptive on-time D-CAP2™ mode synchronous buck converter requiring a very low external component count. The D-CAP2 control circuit is optimized for low-ESR output capacitors such as POSCAP, SP-CAP, or ceramic types, and features fast transient response with no external compensation. The switching frequency is internally set at a nominal 700 kHz. The high-side and low-side switching MOSFETs are incorporated inside the TPS54326 package along with the gate drive circuitry. The low drain-to-source on resistance of the MOSFETs allow the TPS54326 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The TPS54226 also has an auto-skip mode to enable higher efficiency at light loads. The TPS54326 DC/DC synchronous converter is designed to provide up to a 2-A output from an input control voltage source of 4.5 V to 18 V, input power voltage source of 2 V to 18 V, and output voltage from 0.76 V to 5.5 V. Rated input voltage, output voltage, and output current range for the evaluation module are given in Table 1-1.