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SY5055 - PFC+LLC Combo Controller

General Description

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 adopted to get unity PF and lowest THD.

Key Features

  • PF>0.95, THD.

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Datasheet Details

Part number SY5055
Manufacturer Silergy
File Size 484.57 KB
Description PFC+LLC Combo Controller
Datasheet download datasheet SY5055 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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SY5055 PFC+LLC Combo Controller General Description 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 adopted to get unity PF and lowest THD. Burst function increases efficiency at low load. Reliable input BO/BI protection, Boost output OVP/UVP, over current protection, Boost feedback protection guarantees safety work. The LLC converter with proprietary control achieves fast dynamic response and easy loop compensation parameters design. The peripheral devices count is greatly reduced to save BOM cost. The SY5055 also has Output OVP, OTP and OLP for safety operation.