China KP3111LGA Manufacturer, Supplier, Factory

​For high power density, high power output fast charge needs, Sillij launched a high-performance PFC+LLC combination controller SY5055, which sealed the front BOOST PFC and the rear LLC controller, making the peripheral circuit more concise, saving costs and also conducive to improving the power density of the entire power solution.

The KP2591(A) is a resonant switching power controller based on half-bridge LLC resonant converter, which integrates half-bridge driver with 50% duty cycle, and the maximum operating frequency is up to 350kHz.

This DEMO board is a high performance nonisolated 600W constant current LED driver which is controlled by KP1469.Besides the multi-protection function (OVP, SCP, OTP), this demo also has very good efficiency, load regulation, low standby power loss and wide dimming range.

The demo board is designed to demonstrate a highperformance 50WLED filament lamp solution with a full input voltage range. The demonstration board is realized through a highly integrated high-frequency direct drive gallium nitride boost boost PFC constant current controller KP1352, with 650V power GaN FET.

In the modern era of electronics, ACDC Constant Current Chips have become indispensable in powering devices that demand stable and efficient energy conversion. These chips act as the essential link between alternating current (AC) input and direct current (DC) output, ensuring that electronic devices receive a constant, regulated current supply regardless of voltage fluctuations. This feature is crucial for maintaining performance stability and extending the lifespan of devices such as LED lighting, power adapters, battery chargers, industrial control systems, and communication equipment.

A DCDC Constant Current Chip is a core component in modern power management systems, designed to deliver a stable and controllable output current regardless of load or input voltage variations. This article provides a comprehensive technical overview of how DCDC Constant Current Chips function, examines key electrical parameters, explores real-world application scenarios, and answers frequently asked technical questions. The content is structured to support engineering decision-making, component selection, and long-term system optimization while aligning with current search behavior and professional reading habits.