* PF>0.95, THD<5%
* Boost Quasi Resonant (QR) Operation
* Boost Burst Operation at Light Load
* LLC Fast Dynamic Response
* LLC Integrated Half-bridge.

* LCD Television
* Desktop, All in One PC
* Adapter, Charger
* Printer Typical Applications D4 L1 D3 .

The SY5055 is a PFC+LLC combo controller, which integrates a Boost PFC controller and a resonant halfbridge controller. The Boost converter works in CrM/DCM mode to minimize switching losses and get better EMI performance. Proprietary control is ado.

+LLC

SY5055A

SY5000

SY5002C

SY50103

SY50131

SY50133

SY5018B

SY50281

SY5040

SY5060

SY5072

SY5120

SY5220