The TPS56325x is a 3-A integrated FET synchronous buck converter that operates from 3-V to 17-V input voltage and 0.6-V to 10-V output voltage. This device also integrates the bootstrap capacitor in an internal IC, which is helpful for easy layout. The device employs a D-CAP3 control mode that provides fast transient response with no external compensation components and an accurate feedback voltage. The proprietary D-CAP3 control mode enables low external component count, ease of design, and optimization of the power design for cost, size and efficiency. The topology provides a seamless transition between CCM operating mode at higher load condition and DCM operation mode at lighter load condition.

The Eco-mode version allows the TPS563252 to maintain high efficiency at light load. The FCCM version allows the TPS563257 to maintain a fixed switching frequency and lower voltage output ripple. The TPS56325x is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors.