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关键词: Fairchild , FL103 , LED照明
Fairchild公司的FL103是用于LED照明的第三代初级调整(PSR)PWM控制器,采用TRUECURRENT拓扑可使具有精密的恒流(CC)调整,并简化LED照明电路,和通常设计或线性变压器相比,具有更低的成本和更小的体积,其待机功耗小于30mW,主要用在LED照明和通用反激转换器.本文介绍了FL103主要特性,方框图, 典型应用电路图和采用FL103M初级调整(PSR)的LED灯控制电路设计电路.
2011-11-15 19:41:20 上传
FL103: Primary-Side-Regulation PWM Controller for LED Illumination
This third-generation Primary-Side-Regulation (PSR) and highly integrated PWM controller provides features to enhance the performance of LED illumination.
The proprietary topology, TRUECURRENT™, enables precise CC regulation and simplified circuit for LED illumination applications. The result is lower-cost and smaller LED lighting compared to a conventional design or a linear transformer.
To minimize standby power consumption, the proprietary green-mode function provides off-time modulation to linearly decrease PWM frequency under light-load conditions. Green mode assists the power supply in meeting the power conservation requirements.By using the FL103, LED illumination can be implemented with few external components and minimized cost.
FL103主要特性:
Low Standby Power: < 30mW
High-Voltage Startup
Few External Component Counts
Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry
Green-Mode: Linearly-Decreasing PWM Frequency
Fixed PWM Frequency at 50kHz and 33kHz with Frequency Hopping to Solve EMI Problems
Peak-Current-Mode Control in CV Mode
Cycle-by-Cycle Current Limiting
VDD Over-Voltage Protection (OVP)
VDD Under-Voltage Lockout (UVLO)
Adjustable Brownout Detector
Gate Output Maximum Voltage Clamped at 15V
Thermal Shutdown (TSD) Protection
Available in the 8-Lead SOIC Package
FL103应用:
LED Illumination
General Flyback Converter
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