AP1682EMTR-G1 Diodes Incorporated

NOT RECOMMENDED FOR NEW DESIGN USE AL1665 AP1682E SINGLE STAGE PRIMARY SIDE REGULATION PFC CONTROLLER FOR LED DRIVER Description Pin Assignments The AP1682E is a high performance AC/DC universal input Primary Side Regulation Power Factor Controller for LED driver applications. (Top View) The device uses Pulse Frequency Modulation (PFM) technology to regulate output current while achieving high power factor and low 1 8 VCC NC THD. 2 7 OUT VS VPK 3 6 GND The AP1682E provides accurate constant current (CC) regulation while removing the opto-coupler and secondary control circuitry. It CS 4 5 FB also eliminates the need of loop compensation circuitry while maintaining stability. The AP1682E achieves excellent regulation and SO-8 high efficiency, yet meets the requirement of IEC61000-3-2 harmonic standard. The AP1682E features low start-up current, low operation current and high efficiency. It also has rich protection features including over voltage, short circuit, over current protection etc. The AP1682E is available in SO-8 package. Features Applications Primary Side Control for Output Current Regulation Without Single Stage Power Factor Correction Power Supply for LED Opto-coupler and Secondary CV/CC Control Circuitry Lighting Low Start-up Current High Power Factor and Low THD for Universal Input Range Tight CC Regulation Performance for Universal Input Mains Voltage Range Eliminates Control Loop Compensation Circuitry Built-in Acceleration Start Open-load and Reload Detection Over Voltage and Short Circuit Protection Over Current Protection Cost Effective Total PFC LED Driver Solution Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. AP1682E Typical Applications Circuit T1 L1 C6 R19 D3 1 R8 ZD2 R3 R20 + R1 OUT D2 5 C7 R9 R18 DB1 R4 F1 R15 R10 D1 3 ZD1 AC C1 VR1 C2 C5 Input R16 8 5 VCC R7 4 FB 3 CY1 VPK R17 AP1682E R5 C4 R11 7 OUT 2 R2 VS Q1 4 CS GND C3 6 R12 R6 R13 R14 L2 Pin Descriptions Pin Number Pin Name Function 1 NC No connection The rectified input voltage sensing pin. The pin is detecting the instantaneous rectified sine waveform of 2 VS input voltage The rectified input voltage peak value sensing pin. The pin is detecting the rectified sine waveform peak 3 VPK value of input voltage 4 CS Primary current sensing This pin captures the feedback voltage from the auxiliary winding. FB voltage is used to control no load 5 FB output voltage and determine acceleration stop point at start-up phase 6 GND Ground. Current return for gate driver and control circuits of the IC 7 OUT Gate driver output 8 VCC Supply voltage of gate driver and control circuits of the IC Functional Block Diagram VCC 8 UVLO pro OVP 5 Regulator FB & UVLO 0.1V Bias COMP Tonsec Tons Detector PFM Acceleration Start EA 1.8 Control 7 CV CTRL PFM Driver R Q OUT S Peak Current Control 4 CS & LEB Input Current CC CTRL 6 R Q Shaping and GND 2 VS Constant Current S Control 3 VPK 2 of 10 AP1682E February 2020 Diodes Incorporated www.diodes.com Document number: DS36648 Rev. 2 - 3