用于离线LED驱动器的开关控制直接驱动线性控制器 TPS92410DR SOIC-13

TPS92410是一款具有高压启动功能的先进线性驱动器，适用于低功耗离线LED照明应用。该器件可与TPS92411直接驱动开关结合使用，用于调节流过LED的平均电流。TPS92410设有基准电压，可用于设定电流级别和温度折返阈值。此器件内含乘法器，可用于获取优异的功率因数同时保持良好的线路调节性能。其它特性包括：欠压锁定、过压保护、正向相位调光器检测、切换到恒流模式、温度折返以及热关断。The TPS92410 device is a high-voltage linear regulator driver that can be used for offline LED drivers. It includes a feature that forces the regulator current to follow the rectified AC voltage to achieve high power-factor and low total harmonic distortion (THD). When the device detects multiple forward phase dimmer edges, the regulator current changes to a DC level to maintain a DC current draw to provide for a triac dimmer's hold current requirements. The TPS92410 device also includes linear MOSFET over-voltage protection to protect the MOSFET if the LEDs are shorted. It includes a thermal foldback feature to protect the entire circuit in the event it becomes overheated. Analog dimming capability allows light output to be controlled by a microcontroller or a 0 V to 10 V dimmer. The device also includes a precision voltage reference.