TPS56628
www.ti.com SLVSC94A – OCTOBER 2013 – REVISED DECEMBER 2013 4.5V to 18V Input, 6-A Synchronous Step-Down Converter with Eco-mode™
Check for Samples: TPS56628 FEATURES DESCRIPTION The TPS56628 is an adaptive on-time D-CAP2в„ў
mode synchronous buck converter. The TPS56628
enables system designers to complete the suite of
various end-equipment power bus regulators with a
cost effective, low component count, low standby
current solution. The main control loop for the
TPS56628 uses the D-CAP2в„ў mode control that
provides a fast transient response with no external
compensation components. The adaptive on-time
control supports seamless transition between PWM
mode at higher load conditions and Eco-modeв„ў
operation at light loads. Eco-modeв„ў allows the
TPS56628 to maintain high efficiency during lighter
load conditions. The TPS56628 also has a proprietary
circuit that enables the device to adopt to both low
equivalent series resistance (ESR) output capacitors,
such as POSCAP or SP-CAP, and ultra-low ESR
ceramic capacitors. The device operates from 4.5-V
to 18-V VIN input. The output voltage can be
programmed between 0.76 V and 5.5 V. The
TPS56628 is available in the 8-pin DDA package, …
