Single-Stage PFC Primary-Side-Regulation Offline LED Driver
FLS3217 / FLS3247 — Single-Stage PFC Primary-Side-Regulation Offline LED Driver with Integrated Power MOSFET
July 2014
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Description
FLS3217 / FLS3247 — Single-Stage PFC Primary-Side-Regulation Offline LED Driver with Integrated Power MOSFET
July 2014
FLS3217 / FLS3247 Single-Stage PFC Primary-Side-Regulation Offline LED Driver with Integrated Power MOSFET
Features
Cost-Effective Solution without Input Bulk Capacitor
and Feedback Circuitry
Power-Factor Correction (PFC) Integrated Power MOSFET Accurate Constant-Current (CC) Control
Independent Online Voltage, Output Voltage, and Magnetizing Inductance Variation
Linear Frequency Control for Increased Efficiency Open / Short-LED Protection Cycle-by-Cycle Current Limiting Over-Temperature Protection with Auto Restart Low Startup Current: 20μA Low Operating Current: 5mA VDD Over-Voltage Protection (OVP) VDD Under-Voltage Lockout (UVLO)
Application Voltage Range: 80 VAC ~ 308 VAC
Applications
LED Lighting System
Description
This highly integrated PWM controller with power MOSFET, FLS3217 / FLS3247, provides several features to enhance the performance of low-power flyback converters. The proprietary topology enables simplified circuit design for LED lighting applications.
By using the single-stage topology with primary-side regulation, an LED lighting board can be implemented with the few external components and minimized cost; requiring no input bulk capacitor or feedback circuitry. To implement good power factor and low THD, constant on-time control is utilized with an external capacitor connected to COMI.
Precise constant-current...
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