NOT RECOMMENDED FOR NEW DESIGN - USE AP1682EMTR-G1 AP1682 SINGLE STAGE PRIMARY SIDE REGULATION PFC CONTROLLER FOR LED DRIVER Description Pin Assignments The AP1682 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 8 NC 1 VCC THD. 7 VS 2 OUT The AP1682 provides accurate constant current (CC) regulation while removing the opto-coupler and secondary control circuitry. It also VPK 3 6 GND eliminates the need of loop compensation circuitry while maintaining CS 5 FB stability. The AP1682 achieves excellent regulation and high 4 efficiency, yet meets the requirement of IEC61000-3-2 harmonic standard. The AP1682 features low start-up current, low operation current and SOIC-8 high efficiency. It also has rich protection features including over voltage, short circuit, over current, over temperature protection etc. Applications The AP1682 is available in SOIC-8 package. Single Stage Power Factor Correction Power Supply for LED Lighting Features Primary Side Control for Output Current Regulation without Opto-coupler and Secondary CV/CC Control Circuitry 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 Temperature 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) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See NOT RECOMMENDED FOR NEW DESIGN - USE AP1682EMTR-G1 AP1682 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 C2 VR1 C5 Input R16 8 5 VCC 4 R7 FB 3 CY1 VPK R17 AP1682 R5 R11 C4 7 OUT 2 VS R2 Q1 4 CS GND C3 R12 6 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 2 VS waveform of input voltage The rectified input voltage peak value sensing pin. The pin is detecting the rectified sine waveform 3 VPK peak 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 5 FB load 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 2 of 11 AP1682 March 2018 Diodes Incorporated www.diodes.com Document number: DS40848 Rev. 2 - 3