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High power drive controller The most common lamp in life is led lamp, but few people know that led lamp needs LED driver. The following is a guide to understand the relevant knowledge of LED driver controller. On May 29, Current Logic announced the release of the AL1665 single-stage flyback and buck-boost controller for commercial, online, dimmable LED lighting installations that can operate up to 100 W. Designed to drive external MOSFETs to control LED loads and maintain high power factors, the AL1665 also provides a small, high-efficiency solution that helps minimize additional components and maintain high switching efficiency. LED driver The AL1665 is designed for AC 1nput voltages between 85VAC and 305VAC and uses a primary side regulation (PSR) topology without optical isolation or a secondary side controller. Developers can use PSR to design smaller solutions with less PCB area and lower material costs while providing constant current regulation for the highest power LED lighting product applications. Dimmable fr0m 0.5% to 100% of high power output, the AL1665 is suitable for commercial LED product applications where lighting output levels can be adjusted for aesthetics or power savings, such as retail displays. The output voltage is compatible with ANSI approved dimmers and can be adjusted fr0m 0 V to 10 V using a dedicated PWM output or fr0m 0 V to 2.5 V using an analog 1nput voltage, simplifying the development of online lighting systems for local and remote management. The device uses boundary condition mode (BCM) switching and valley switching to significantly reduce losses and provide high efficiency at low EMI. The wide supply voltage allows the AL1665 to operate directly fr0m the mains in any region with line and load regulation of less than ± 2%, a power factor greater than 0.9, and a THD of less than 20%, enabling manufacturers to comply with all relevant regulations. The above is the relevant knowledge about LED driver chip |
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