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FLS3217N Dataheets PDF



Part Number FLS3217N
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description Single-Stage PFC Primary-Side-Regulation Offline LED Driver
Datasheet FLS3217N DatasheetFLS3217N Datasheet (PDF)

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  Lin.

  FLS3217N   FLS3217N


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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 control regulates accurate output current versus changes in input voltage and output voltage. The operating frequency is proportionally changed by the output voltage to guarantee DCM operation with higher efficiency and simple design. FLS3217 and FLS3247 provide protection features such as open-LED, short-LED, and over-temperature protection. The current-limit level is automatically reduced to minimize the output current and protect external components in short-LED condition. Ordering Information Part Number Operating Temperature Range FLS3217M FLS3217N -40°C to +125°C FLS3247N . Package Packing Method 7-Lead, Small Outline Package (SOIC) Tape & Reel 7-Lead, Small Outline Package (DIP) Tube © 2012 Fairchild Semiconductor Corporation FLS3217 / FLS3247 • Rev. 1.0.1 www.fairchildsemi.com FLS3217 / FLS3247 — Single-Stage PFC Primary-Side-Regulation Offline LED Driver with Integrated Power MOSFET + + Application Diagram BRIDGE DIODE LINE INPUT FUSE 2 VDD DRAIN 7 NC 6 5 COMI VS 4 3 GND CS 1 TRANS Figure 1. Typical Application Internal Block Diagram DRAIN 7 VDD 2 VOVP Internal Bias VDD Good + - Max. Duty Controller SQ OSC NC 6 TSD R VDD Good GND 3 DCM Frequency Controller Auto Restart Protection: OVP (Over-Voltage Protection) UVLO (Under-Voltage Lockout) OTP (Over-Temperature Protection) Freq. VS Shutdown Gate Driver SQ R OCP Level Controller + VOCP - - + Sawtooth Generator VS LEB tDIS Detector VREF Error Amp. TRUECURRENT® Calculation Sample & Hold 1 CS 5 COMI 4 VS Figure 2. Functional Block Diagram © 2012 Fairchild Semiconductor Corporation FLS3217 / FLS3247 • Rev. 1.0.1 2 www.fairchildsemi.com FLS3217 / FLS3247 — Single-Stage PFC Primary-Side-Regulation Offline LED Driver with Integrated Power MOSFET Marking Information ZXYTT S3217 TM Pin Configuration ZXYTT S3247 TM F: Fairchild Logo Z: Plant Code X: 1-Digit Year Code Y: 1-Digit Week Code TT: 2-Digit Die Run Code T: Package Type (M=SOIC, N=DIP) M: Manufacture Flow Code Figure 3. Top Mark Figure 4. Pin Configuration Pin Definitions Pin # 1 2 3 4 5 6 7 Name CS VDD GND VS COMI NC DRAIN Description Current Sense. This pin connects a current-sense resistor to detect the MOSFET current for the output-current regulation in Constant-Current (CC) regulation. Power Supply. IC operating current and MOSFET driving current are supplied using this pin. Ground Voltage Sense. This pin detects the output voltage information and discharge time for maximum frequency control and constant current regulation. This pin is connected to an auxiliary winding of the transformer via resistors of the divider. Constant Current Loop Compensation. This pin is connected to a capacitor between the COMI and GND pins for compensation current loop gain. No Connect Power MOSFET Drain. This pin is the high-voltage power MOSFET drain. © 2012 Fairchild Semiconductor Corporation FLS3217 / FLS3247 • Rev. 1.0.1 3 www.fairchildsemi.com FLS3217 / FLS3247 — Single-Stage PFC Primary-Side-Regulation Offline LED Driver with Integrated Power MOSFET Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol VVDD V.


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