The TPS56425x is a 4-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 TPS564252 to maintain high efficiency at light load. The FCCM version allows the TPS564257 to maintain a fixed switching frequency and lower voltage output ripple. The OOA version allows the TPS564255 to prevent audio noise generation. The TPS56425x 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.