The UCC256302 is a fully featured LLC controller with integrated high-voltage gate
driver. It has been designed for use in offline AC-DC or isolated DC-DC to provide a complete power
system using a minimum of external components. The resulting power system is designed to meet the
most stringent requirements for standby power without the need for a separate standby power
UCC256302 includes an integrated, high voltage startup function which eliminates the need
for an external bias supply, reducing BOM count and minimizing solution size. UCC256302 uses hybrid
hysteretic control to provide best in class line and load transient response. The control makes the
open loop transfer function a first order system so that it’s very easy to compensate.
UCC256302 provides a high efficient burst mode with consistent burst power level during
each burst on cycle. The burst power level is programmable and adaptively changes with input
voltage, making the optimization of efficiency very easy.
Select the appropriate LLC resonant controller for your design with UCC25630x Selection