NCP1608 Critical Conduction Mode PFC Controller Utilizing a Transconductance Error Amplifier www.onsemi.com The NCP1608 is an active power factor correction (PFC) controller specifically designed for use as a preconverter in acdc adapters, electronic ballasts, and other medium power offline 8 converters (typically up to 350 W). It uses critical conduction mode 1 (CrM) to ensure near unity power factor across a wide range of input SOIC8 voltages and output power. The NCP1608 minimizes the number of D SUFFIX external components by integrating safety features, making it an CASE 751 excellent choice for designing robust PFC stages. It is available in a SOIC8 package. MARKING DIAGRAM General Features Near Unity Power Factor 8 1608B No Input Voltage Sensing Requirement ALYW Latching PWM for CyclebyCycle On Time Control (Voltage Mode) 1 Wide Control Range for High Power Application (>150 W) Noise A = Assembly Location Immunity L = Wafer Lot Transconductance Error Amplifier Y = Year W = Work Week High Precision Voltage Reference (1.6% Over the Temperature = PbFree Package Range) Very Low Startup Current Consumption ( 35 A) PIN CONNECTION Low Typical Operating Current Consumption (2.1 mA) Source 500 mA/Sink 800 mA Totem Pole Gate Driver FB V CC Control DRV Undervoltage Lockout with Hysteresis Ct GND PintoPin Compatible with Industry Standards CS ZCD This is a PbFree and HalideFree Device (Top View) Safety Features ORDERING INFORMATION Overvoltage Protection Device Package Shipping Undervoltage Protection NCP1608BDR2G SOIC8 2500 / Tape & Reel Open/Floating Feedback Loop Protection (PbFree) Overcurrent Protection For information on tape and reel specifications, Accurate and Programmable On Time Limitation including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Typical Applications Brochure, BRD8011/D. Solid State Lighting Electronic Light Ballast AC Adapters, TVs, Monitors All OffLine Appliances Requiring Power Factor Correction Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: July, 2015 Rev. 5 NCP1608/DNCP1608 V in L V out N :N D B ZCD LOAD R ZCD (Ballast, SMPS, etc.) V CC R out1 NCP1608 + 8 + 1 C in V FB CC C bulk EMI M 7 AC Line 2 Filter Control DRV 6 3 Ct GND R out2 5 4 CS ZCD C C COMP t R sense Figure 1. Typical Application OVP + V + V CC CC V out V OVP UVLO V DD UVP + POK - V + + + DDGD C bulk R out1 V Reg DD V UVP (Enable EA) FB E/A V + DD g m R out2 D + R FB V REF Fault Haversine Control V Control V L in V EAH C COMP Clamp N :N POK B ZCD V DD PWM I charge C Add Ct t + Offset C t S Q M DRV CS OCP R Q + LEB + V CC R V sense ILIM UVLO DRV Demag + S Q S Q + R Q V R ZCD(ARM) Q V DDGD + Reset + V ZCD DD S Q V ZCD(TRIG) Off Timer GND R ZCD R Q ZCD Clamp S Q V DD R Q POK All SR Latches are Reset Dominant Figure 2. Block Diagram www.onsemi.com 2