DATA SHEET www.onsemi.com Secondary Side 8 Synchronous Rectification 1 1 Driver for High Efficiency SOIC8 NB TSOP6 CASE 75107 CASE 318G02 SMPS Topologies 8 NCP4306 1 1 The NCP4306 is high performance driver tailored to control a synchronous rectification MOSFET in switch mode power supplies. DFN8, 4x4 DFN8, 2.0x2.2, 0.5P CASE 488AF CASE 506BP Thanks to its high performance drivers and versatility, it can be used in various topologies such as DCM or CCM flyback, quasi resonant flyback, forward and half bridge resonant LLC. MARKING DIAGRAMS The combination of externally or fixed adjustable minimum off-time and on-time blanking periods helps to fight the ringing 8 induced by the PCB layout and other parasitic elements. A reliable and XXXXXXXX noise less operation of the SR system is insured due to the Self XXXAYW ALYWX Synchronization feature. The NCP4306 also utilizes Kelvin connection of the driver to the MOSFET to achieve high efficiency 1 operation at full load and utilizes a light load detection architecture to 1 achieve high efficiency at light load. SOIC8 NB TSOP6 The precise turnoff threshold, extremely low turnoff delay time and high sink current capability of the driver allow the maximum XXXXXX synchronous rectification MOSFET conduction time and enables 1 XXM XXXXXX maximum SMPS efficiency. The high accuracy driver and 5 V gate ALYW clamp enables the use of GaN MOSFETs. Features DFN8, 4x4 DFN8, 2.0x2.2, 0.5P SelfContained Control of Synchronous Rectifier in CCM, DCM and See detailed marking information on page 2 of this QR for Flyback or LLC Applications data sheet. Precise True Secondary Zero Current Detection Typically 15 ns Turn off Delay from Current Sense Input to Driver XXXXX = Specific Device Code A = Assembly Location Rugged Current Sense Pin (up to 200 V) L = Wafer Lot Ultrafast Turnoff Trigger Interface / Disable Input (10.5 ns) Y = Year Adjustable or Fixed Minimum ONTime W = Work Week M = Date Code Adjustable or Fixed Minimum OFF-Time with Ringing Detection = PbFree Package Improved Robust Self Synchronization Capability (Note: Microdot may be in either location) 7 A / 2 A Peak Current Sink / Source Drive Capability Operating Voltage Range up to V = 35 V CC Automatic Lightload Disable Mode ORDERING INFORMATION See detailed ordering and shipping information on page 2 of GaN Transistor Driving Capability this data sheet. Low Startup and Disable Current Consumption Maximum Operation Frequency up to 1 MHz TSOP6, SOIC8, DFN8 4x4 and DFN8 2x2.2 Packages This is a PbFree Device Typical Applications Notebook Adapters High Power Density AC / DC Power Supplies (Cell Phone Chargers) LCD TVs All SMPS with High Efficiency Requirements Semiconductor Components Industries, LLC, 2017 1 Publication Order Number: January, 2022 Rev. 8 NCP4306/DNCP4306 ORDERING INFORMATION TABLE Table 1. AVAILABLE DEVICES Device Package Marking Package Shipping NCP4306AAAZZZADR2G 6AAAZZZA SOIC8 NCP4306AADZZZADR2G 6AADZZZA 2500 / Tape and Reel (PbFree) NCP4306AAHZZZADR2G 6AAHZZZA NCP4306DADZZDASNT1G 6AC TSOP6 NCP4306DAHZZAASNT1G 6AD 3000 / Tape and Reel (PbFree) NCP4306DADZZBASNT1G 6AK NCP4306AAAZZZAMNTWG 4306AAAZZZA DFN8 4x4 4000 / Tape and Reel (PbFree) NCP4306AADZZZAMNTWG 4306AADZZZA NCP4306AAAZZZAMN1TBG 6A DFN8 2x2.2 3000 / Tape and Reel (PbFree) NCP4306AADZZZAMN1TBG 6D For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. See the onsemi Device Nomenclature document (TND310/D) for a full description of the naming convention used for image sensors. For reference documentation, including information on evaluation kits, please visit our web site at www.onsemi.com. C3 R1 VCC DRV MIN TOFF GND CS MIN TON LLD TRIG NCP4306 +V BULK +V OUT Tr1 M1 M3 N2 LLC C2 STAGE RTN CONTROL M2 N1 D1 N3 M4 C1 OK1 R2 C4 VCC DRV MIN TOFF GND CS MIN TON LLD TRIG NCP4306 Figure 1. Typical Application Example LLC Converter with optional LLD and Trigger Utilization www.onsemi.com 2 R MIN TOFF R MIN TOFF R MIN TON R MIN TON R LLD R LLD