ZXGD3110N8 Datasheet, PDF (1/11 Pages) Diodes Incorporated – SYNCHRONOUS MOSFET CONTROLLER IN SO-8

Description
The ZXGD3110N8 is intended to drive a MOSFET configured as an
ideal diode replacement. The device is comprised of a high voltage
detector stage and gate driver. The detector monitors the voltage
between the drain and the source of the MOSFET and if this voltage is
less than the turn on threshold voltage of the controller a positive
voltage is applied to the MOSFET’s Gate Pin. As the load current
decays to zero and the voltage between the drain and source of the
MOSFET increases beyond the turn-off threshold value MOSFET is
rapidly turned off.
Intelligent features of this IC are the Minimum Off-Time (TOFF) and
Minimum On-Time (TON), these features blanket the noise generated
during the turn-on and turn-off instances of the power FET. Also Light
Load Detection (LLD) for improved efficiency at light and no load,
where synchronous rectification is no more beneficial. Other features
include Undervoltage Lockout (UVLO), SYNC feature for CCM
operation and low turn-off threshold voltage for improved efficiency.
Applications
Flyback Converters in:
 Power Adaptors
 Auxiliary Power Supplies
 PoE Power Devices
Resonant Converters in:
 High Power Adaptors
 85+/90+ Compliant ATX and Server Power Supplies
ZXGD3110N8
SYNCHRONOUS MOSFET CONTROLLER IN SO-8
Features
 Frequency of Operation up to 500kHz
 Suitable for Discontinuous Conduction Mode (DCM),
Continuous Conduction Mode (CCM) and Critical (CrCM)
Conduction Mode
 Minimum On-Time and Off-Time to Reduce Turn-On/Off
Oscillations
 Intelligent Light Load Detection and Sleep Mode
 Turn-Off Propagation Delay Time 30ns
 Drain Voltage Rating of 200V
 Recommended Operating Voltage from 4.5V up to 12V
 Source and Sink Current of 2A and 4A Respectively
 Low Component Count
 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
 Halogen and Antimony free. “Green” Device (Note 3)
Mechanical Data
 Case: SO-8
 Case Material: Molded Plastic. “Green” Molding Compound.
UL Flammability Classification Rating 94V-0
 Moisture Sensitivity: Level 1 per J-STD-020
 Terminals: Finish – Matte Tin Plated Leads, Solderable per MIL-
STD-202, Method 208
 Weight: 0.074 grams (Approximate)
SO-8
Top View
V_CC
T_ON
VS
V_D
Top View
Pin-Out
GND
SYNC
GATE
PGATE
Ordering Information (Note 4)
Product
ZXGD3110N8TC
Marking
ZXGD3110
Reel Size (inches)
13
Tape Width (mm)
12
Quantity per Reel
2,500
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony free,"Green"
and Lead-Free.
3. Halogen and Antimony free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
4. For packaging details, go to our website at http://www.diodes.com/products/packages.html.
ZXGD3110N8
Document Number DS37336 Rev. 1 - 2
1 of 11
www.diodes.com
December 2015
© Diodes Incorporated