NXP SSL2109T GreenChip 23W LED照明控制方案

1、nxp ssl2109t greenchip 23w led照明控制方案ssl2109t可用于紧凑，小型的led灯及单电源输入电压，精确的固定电流输出。主电源输入电压包括，100v，120v和230v（沟通）。用法pwm信号，其输出信号可调制,其电压的范围由外部元件打算。ssl2109参考板ssl2109是的控制器ic，旨在提供低成本，小尺寸的led驱动器。该参考板工作电压为230v或120v（沟通），用法30v或更高的输出电压。该参考板优化了230v（50hz）或120v（50hz或60hz）的主电源板。除了主电源电压的优化外，该板可以与多个led一起工作，或与一个具有较高正向电压的led模

2、块一起工作。其主电源电压的衔接不同于其他普通的评估/参考板。电源与螺丝j6衔接。the ssl2109t is a high-voltage integrated circuit (ic), intended to drive led lamps in general lighting applications.ssl2109t主要特性:small printed-circuit board (pcb) footprint, and compact solutionhigh efficiency (up to 95 %)ease of integration and many protecti

3、on featureslow electronic bill of material (bom)the ic is supplementary to the ssl2108x series, but without internal switch. the ic range has been designed to start up directly from the hv supply by an internal high-voltage current source. thereafter, the dv/dt supply is used with capacitive couplin

4、g from the drain, or any other auxiliary supply. this functionality provides full flexibility in the application design. an internal clamp limits the supply voltage.the ic provides accurate output current control to within 5 % led current accuracy. the ic can be operated using pulse-width modulation

5、 (pwm) dimming and has many protection features including easy led temperature feedback.ssl2109t性能和优势:led controller ic for driving strings of leds or high-voltage led modules from a rectified mains supplypart of a high-efficiency switch mode buck driver product familycontroller that has power-effic

6、ient boundary conduction mode of operation with:no reverse recovery losses in freewheel diodezero current switching (zcs) for switch turn-onzero voltage or valley switching for switch turn-offminimal required inductance value and sizedirect pwm dimming possiblefast transient response through cycle-b

7、y-cycle current control:negligible ac mains ripple in led current and minimal total capacitor valueno over or undershoots in the led currentno binning on the led forward voltage requiredinternal protections:undervoltage lockout (uvlo)leading-edge blanking (leb)overcurrent protection (ocp)short-windi

8、ng protection (swp)internal overtemperature protection (otp)brownout protectionoutput short protection (osp)low component count (see figure 3) led driver solution:no dim switch and high-side driver required for pwm dimmingeasy external temperature protection with a single ntcoption for soft-start functioncompatible with wall switches with built-in indication light during standbyic lifetime easily matches or surpasses led lamp lifetimessl2109t应用:the ssl2109t is intended for compact led lamps with accurate fixed current output for single mains input voltages. mains input voltages include 100 v,