NCP43080DMNTWG ON Semiconductor

NCP43080 Synchronous Rectifier Controller The NCP43080 is a synchronous rectifier controller for switch mode power supplies. The controller enables high efficiency designs for flyback and quasi resonant flyback topologies. www.onsemi.com Externally adjustable minimum offtime and ontime blanking periods provides flexibility to drive various MOSFET package types and PCB layout. A reliable and noise less operation of the SR system is MARKING insured due to the Self Synchronization feature. The NCP43080 also DIAGRAMS 8 utilizes Kelvin connection of the driver to the MOSFET to achieve high 8 1 efficiency operation at full load and utilizes a light load detection 43080x SOIC8 architecture to achieve high efficiency at light load. ALYW D SUFFIX The precise turnoff threshold, extremely low turnoff delay time CASE 751 and high sink current capability of the driver allow the maximum 1 synchronous rectification MOSFET conduction time. The high accuracy driver and 5 V gate clamp make it ideally suited for directly driving GaN devices. 1 43080x DFN8 ALYW Features MN SUFFIX SelfContained Control of Synchronous Rectifier in CCM, DCM and CASE 488AF QR for Flyback, Forward or LLC Applications Precise True Secondary Zero Current Detection Rugged Current Sense Pin (up to 150 V) 1 FxM Adjustable Minimum ONTime WDFN8 Adjustable Minimum OFF-Time with Ringing Detection MT SUFFIX CASE 511AT Adjustable Maximum ONTime for CCM Controlling of Primary QR Controller 43080x = Specific Device Code Improved Robust Self Synchronization Capability x = A, B, C, D or Q Fx = Specific Device Code 8 A / 4 A Peak Current Sink / Source Drive Capability x = A or D Operating Voltage Range up to V = 35 V CC A = Assembly Location L = Wafer Lot Automatic Lightload & Disable Mode Y = Year Adaptive Gate Drive Clamp W = Work Week M = Date Code GaN Transistor Driving Capability (options A and C) = PbFree Package Low Startup and Disable Current Consumption (Note: Microdot may be in either location) Maximum Operation Frequency up to 1 MHz SOIC-8 and DFN8 (4x4) and WDFN8 (2x2) Packages ORDERING INFORMATION These are PbFree Devices See detailed ordering and shipping information on page 33 of Typical Applications this data sheet. Notebook Adapters High Power Density AC/DC Power Supplies (Cell Phone Chargers) LCD TVs All SMPS with High Efficiency Requirements Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: February, 2017 Rev. 0 NCP43080/DNCP43080 RTN D1 OK1 Figure 1. Typical Application Example LLC Converter with Optional LLD +Vout Vbulk TR1 R1 R7 C6 C7 C1 C2 C5 R6 D3 R5 VCC M2 D4 FLYBACK D6 C3 CONTROL GND C4 CIRCUITRY DRV M1 FB CS R2 R3 R4 D5 R8 OK1 Figure 2. Typical Application Example DCM, CCM or QR Flyback Converter with optional LLD www.onsemi.com 2 + + MIN TOFF MIN TOFF MIN TON MIN TON +