Buck Boost & PFC Controller For Lighting Power Supply（SILERGY)

SILERGY series power management ICs and LED driver chips are widely adopted in LED landscape lighting, flood lights, garden lights, switching power adapters and industrial power PCBA boards. The full product lineup covers step-down buck, step-up boost, buck-boost, high-voltage wide-input, PFC control, dimming driver, power distribution switch and lithium battery charger ICs, fully meeting engineers’ mainstream power design requirements.

The SILERGY series includes multi-spec current and voltage models, ranging from 0.3A small current to 8A high current, and supports ultra-wide input voltage from 3V low voltage to 100V high voltage. Common mainstream models such as SY8204, SY8205, SY8366, SY8368, SY8388 provide stable high-current buck conversion, featuring low on-resistance, low heat and high surge resistance, ideal for medium and high power LED constant-current driving schemes.

For outdoor high-brightness lighting and boost power solutions, SY7200, SY7203, SY7301, SY7304 series boost driver ICs support wide voltage input and PWM dimming function, effectively solving voltage drop and unstable current problems in long-line landscape lighting systems.

In terms of power factor correction and dimming control, SY5881, SY5882, SY5830, SY5839 and other single-stage PFC controllers support primary-side control, high power factor and multi-dimming modes, which are core chips for high-efficiency and energy-saving commercial LED lighting power supplies. Meanwhile, SY5862, SY5863, SY5864 adaptive LED current filter series effectively optimize current fluctuation and improve lighting stability.

In low-loss power distribution and battery management scenarios, SY6280 series low-loss power switches and SY6935, SY6974 lithium battery charger ICs provide reliable solutions for intelligent power supply, battery charging and USB OTG circuit design.

All SILERGY power management chips feature high efficiency, high withstand voltage, fast response and ultra-low standby loss. They are standard replacement components for mainstream lighting power supply schemes and perfectly fit mass production of indoor and outdoor LED lighting, smart power adapters and small household appliance power boards.