Diodes ZXGD3103N8 User Manual
Description, Features, Applications
ZXGD3103N8
ZXGD3103N8
Document number: DS32255 Rev. 2 - 2
1 of 12
November 2011
© Diodes Incorporated
A Product Line of
Diodes Incorporated
Device Status
Package
Part
Mark
Reel size
(inches)
Tape width
(mm)
Quantity per reel
ZXGD3103N8TC
Production SO8 ZXGD3103
13
12
2500
Description
The ZXGD3103 is intended to drive MOSFETS
configured as ideal diode replacements. The
device is comprised of a differential amplifier
detector stage and high current driver. The
detector monitors the reverse voltage of the
MOSFET such that if body diode conduction
occurs a positive voltage is applied to the
MOSFET’s Gate pin.
Once the positive voltage is applied to the Gate
the MOSFET switches on allowing reverse current
flow. The detectors’ output voltage is then
proportional to the MOSFET Drain-Source reverse
voltage drop and this is applied to the Gate via the
driver. This action provides a rapid turn off as
current decays.
Features
•
Proportional Gate Drive
•
Turn-off propagation delay 15ns and turn-off
time 20ns.
•
Detector threshold voltage ~10mV
•
Standby current 5mA
•
Suitable for Discontinuous Mode (DCM),
Critical Conduction Mode (CrCM) and
Continuous Mode (CCM) operation
•
5-15V V
CC
range
Applications
•
Flyback Converters in:
•
Adaptors
•
LCD Monitors
•
Server PSU’s
•
Set Top Boxes
•
LCD TV
•
Resonant Converters
•
LED TV
•
High power Adaptors
•
Street Lighting
•
ATX psu
Pin out details
Typical Configuration
SO-8
Ordering information
SYNCHRONOUS MOSFET CONTROLLER
Marking information
ZXGD
3103
YY WW
ZXGD
= Product Type Marking Code, Line 1
3103
= Product Type Marking Code, Line 2
YY
= Year (ex: 11 = 2011)
WW
= Week (01 - 53)