ZXGD3105N8TC Diodes Incorporated

ZXGD3105N8 SYNCHRONOUS MOSFET CONT ROLLER IN SO-8 Description Features ZXGD3105N8 synchronous controller is designed for driving a Proportional Gate Drive to Minimize Body Diode Conduction MOSFET as an ideal rectifier. This is to replace a diode for increasing Low Standby Power with Quiescent Supply Current <1mA the power transfer efficiency. 4.5V Operation Enables Low Voltage Supply 25V V Rating CC Proportional Gate drive control monitors the reverse voltage of the 100V Drain Voltage Rating MOSFET such that if body diode conduction occurs a positive voltage Operation up to 500kHz is applied to the MOSFETs Gate Pin. Once the positive voltage is Critical Conduction Mode (CrCM) & Continuous Mode (CCM) applied to the Gate the MOSFET switches on allowing reverse current Compliant with Eco-Design Directive flow. The controllers output voltage is then proportional to the Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2) MOSFET Drain-Source voltage and this is applied to the Gate via the Halogen and Antimony free. Green Device (Note 3) driver. This action minimizes body diode conduction whilst enabling a Qualified to AEC-Q101 Standards for High Reliability rapid MOSFET turn-off as the Drain current decays to zero. Mechanical Data Applications Case: SO-8 Flyback Converters in: Case Material: Molded Plastic. Green Molding Compound. Low Voltage AC- DC Adaptors UL Flammability Classification Rating 94V-0 Set-Top-Box Moisture Sensitivity: Level 1 per J-STD-020 PoE Power Devices Terminals: Finish Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 Resonant Converters in: Weight: 0.074 grams (Approximate) Telecoms PSU Laptop Adaptors Computing Power Supplies ATX and Server PSU SO-8 Vcc GATE DNC GND BIAS DNC DRAIN REF Top View Pin-Out Ordering Information (Note 4) Product Marking Reel Size (inches) Tape Width (mm) Quantity per Reel ZXGD3105N8TC ZXGD3105 13 12 2,500 Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See ZXGD3105N8 Functional Block Diagram Pin Pin Description Number Name Power Supply 1 V CC This supply pin should be closely decoupled to ground with a ceramic capacitor. Do Not Connect 2 DNC Leave pin floating. Bias 3 BIAS Connect this pin to V via R resistor. Select R to source 0.54mA into this pin. CC BIAS BIAS Refer to Table 1 and 2, in Application Information section. Drain Sense 4 DRAIN Connect directly to the synchronous MOSFET drain terminal. Reference 5 REF Connect this pin to V via R resistor. Select R to source 1.02mA into this pin. CC REF REF Refer to Table 1 and 2, in Application Information section. Do Not Connect 6 DNC Leave pin floating. Ground 7 GND Connect this pin to the synchronous MOSFET source terminal and ground reference point. Gate Drive 8 GATE This pin sinks and sources the I and I current to the synchronous MOSFET SINK SOURCE gate. 2 of 14 ZXGD3105N8 November 2015 Diodes Incorporated www.diodes.com Document Number DS35101 Rev. 4 - 2