NCP1607 Cost Effective Power Factor Controller The NCP1607 is an active power factor controller specifically designed for use as a preconverter in acdc adapters, electronic ballasts, and other medium power off line converters (typically up to 250 W). It utilizes Critical Conduction Mode (CRM) to ensure unity www.onsemi.com power factor across a wide range of input voltages and power levels. The NCP1607 minimizes the number of external components. The MARKING integration of comprehensive safety protection features makes it an DIAGRAMS 8 excellent choice for designing robust PFC stages. It is available in a 8 1 SOIC8 package. 1607B SO8 General Features ALYW D SUFFIX Unity Power Factor CASE 751 1 No Need for Input Voltage Sensing A = Assembly Location Latching PWM for Cycle by Cycle On Time Control (Voltage Mode) L = Wafer Lot High Precision Voltage Reference (1.6% over the Temperature Y = Year Range) W = Work Week = PbFree Package Very Low Startup Current Consumption ( 40 A) Low Typical Operating Current (2.1 mA) PIN CONNECTION Source 500 mA / Sink 800 mA Totem Pole Gate Driver FB V CC Undervoltage Lockout with Hysteresis Control DRV Ct GND Pin to Pin Compatible with Industry Standards CS ZCD This is a PbFree Device (Top View) This Device uses HalogenFree Molding Compound Safety Features ORDERING INFORMATION Programmable Overvoltage Protection Device Package Shipping Open Feedback Loop Protection NCP1607BDR2G SOIC8 2500 / Tape & Reel Accurate and Programmable On Time Control (PbFree) Accurate Overcurrent Detector For information on tape and reel specifications, including part orientation and tape sizes, please Typical Applications refer to our Tape and Reel Packaging Specifications ACDC Adapters, TVs, Monitors Brochure, BRD8011/D. Off Line Appliances Requiring Power Factor Correction Electronic Light Ballast L BOOST V OUT D BOOST LOAD R ZCD (Ballast, SMPS, etc.) V CC R OUT1 NCP1607 + 8 + 1 C IN FB V CC C BULK EMI 7 2 AC Line Filter C Control DRV COMP 6 3 Ct GND R OUT2 5 4 CS ZCD C T R S Figure 1. Typical Application Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: July, 2015 Rev. 2 NCP1607/DNCP1607 V CC Shutdown V OUT P OK V CC UVP UVLO + V DD + C R BULK OUT1 V V UVP DDGD V Reg (Enable EA) DD FB Dynamic OVP E/A + I >I sink ovp R OUT2 Measure uV D ESD DD V BOOST REF I EAsink Fault R FB V DD Static OVP V EAL Enable Static OVP is triggered C Clamp COMP V CONTROL when clamp is activated. Control ESD V EAH Clamp L AC IN BOOST P OK V DD PWM I Add V CHARGE C EAL T + Offset ESD C T Q S DRV R Q OCP + LEB CS ESD V CC V CS(limit) UVLO R S Demag DRV + V S Q DD S Q V ZCDH R Q V CL(NEG) Q R + V DDGD Active Clamp Off Timer V uV ZCDL DD ZCD S Q Reset + R Shutdown ZCD R Q GND V SDL V CL(POS) S Q uV DD Clamp R Q P OK *All SR Latches are Reset Dominant Figure 2. Block Diagram www.onsemi.com 2 + + + + + + +