ZXGD3103N8TC Diodes Inc, ZXGD3103N8TC Datasheet

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ZXGD3103N8TC

Manufacturer Part Number
ZXGD3103N8TC
Description
MOSFET & Power Driver ICs SYNC Mosfet CNTRL Vcc 15V 25mA 490mA
Manufacturer
Diodes Inc
Datasheet

Specifications of ZXGD3103N8TC

Lead Free Status / Rohs Status
Lead free / RoHS Compliant

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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.
Features
Pin out details
Ordering information
ZXGD3103N8
Document number: DS32255 Rev. 2 - 2
ZXGD3103N8TC Production
GATEH 4
GATEL 3
Proportional Gate Drive
Turn-off propagation delay 15ns and turn-off
Detector threshold voltage ~10mV
Standby current 5mA
Suitable
Critical
Continuous Mode (CCM) operation
5-15V V
time 20ns.
REF
N/C 1
Device
2
CC
Conduction
for
range
SO-8
Discontinuous
Status
Mode
Package
8 DRAIN
7 BIAS
6 GND
5 V
SO8
Mode
CC
(CrCM)
(DCM),
ZXGD3103
Part Mark
www.diodes.com
and
1 of 12
SYNCHRONOUS MOSFET CONTROLLER
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.
Applications
Typical Configuration
Flyback Converters in:
Resonant Converters
Reel size
(inches)
13
Adaptors
LCD Monitors
Server PSU’s
Set Top Boxes
LCD TV
LED TV
High power Adaptors
Street Lighting
ATX psu
Diodes Incorporated
A Product Line of
Tape width
(mm)
12
ZXGD3103N8
Quantity per reel
© Diodes Incorporated
2500
July 2010

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ZXGD3103N8TC Summary of contents

Page 1

... REF 2 GATEL 3 GATEH 4 SO-8 Ordering information Device Status ZXGD3103N8TC Production ZXGD3103N8 Document number: DS32255 Rev Diodes Incorporated SYNCHRONOUS MOSFET CONTROLLER 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 ...

Page 2

... Diodes Incorporated Symbol SOURCE I SINK I REF V BIAS I BIAS stg Symbol R θJA R θ www.diodes.com A Product Line of ZXGD3103N8 Limit Unit to180 2 100 mA 490 mW °C -40 to +150 °C -50 to +150 Value Unit 255 °C/W 120 °C/W Rating Unit 4000 V 400 V July 2010 © Diodes Incorporated ...

Page 3

... Fig Continuous Conduction Mode t f Discontinuous Conduction Mode www.diodes.com A Product Line of ZXGD3103N8 = 3.3kΩ 4.3kΩ REF Min. Typ. Max. Unit - 2. 5.16 - -16 - 0.73 1 6.0 7.2 - 8.8 9.2 - 9.2 9.4 - 9.3 9.5 - 150 15 450 21 17 July 2010 © Diodes Incorporated V ns ...

Page 4

... This pin connects directly to the synchronous MOSFET Drain terminal. ZXGD3103N8 Document number: DS32255 Rev Product Line of Diodes Incorporated via resistor REF , from the synchronous MOSFET Gate. SINK , to the synchronous MOSFET Gate. SOURCE via resistor BIAS www.diodes.com ZXGD3103N8 July 2010 © Diodes Incorporated ...

Page 5

... ZXGD3103N8 T = -40° 25° 85° 125°C -80 -60 -40 - Drain Voltage (mV =22nF LOAD C =10nF LOAD C =4.7nF LOAD C =2.2nF LOAD C =1nF LOAD 10k 100k Frequency (Hz) Current flow Supply to Gate V = 10V CC R =3K3 BIAS R =4K3 REF T = 25° Capacitance (nF) July 2010 © Diodes Incorporated ...

Page 6

... OFF 100 125 150 www.diodes.com A Product Line of ZXGD3103N8 V =10V CC R =10k BIAS R =4K7 REF C =10nF LOAD 100 120 140 Time (ns) Switch Off Speed V =10V CC R =3k3 BIAS R =4K3 REF C =10nF LOAD 100 120 140 Time (ns) July 2010 © Diodes Incorporated ...

Page 7

... ZXGD3103 for synchronous rectification in a Flyback and a multiple output resonant converter. Figure 1. Example connections in Flyback supply Figure 2. Example connections in LLC supply ZXGD3103N8 Document number: DS32255 Rev Product Line of Diodes Incorporated Schottky diode replacement in offline F MOSFET, it can yield significant power efficiency DS(ON www.diodes.com ZXGD3103N8 July 2010 © Diodes Incorporated ...

Page 8

... Figure 4 shows typical operating waveforms for ZXGD3103 driving a MOSFET with Q Flyback converter operating in critical conduction mode. Figure 3. Timing diagram for a critical conduction mode Flyback converter ZXGD3103N8 Document number: DS32255 Rev Product Line of Diodes Incorporated G(off www.diodes.com ZXGD3103N8 to ensure that the = 82nC in a g(TOT) July 2010 © Diodes Incorporated ...

Page 9

... Time (μ www.diodes.com A Product Line of Diodes Incorporated ZXGD3103N8 = 10V = 3K3 = 4K3 = 82nC = 82nC MOSFET g(TOT 10V 3K3 BIAS R = 4K3 REF Q = 82nC g(TOT) = 82nC MOSFET g(TOT) July 2010 © Diodes Incorporated ...

Page 10

... REF BIAS and R from Table 1 based on the desired Vcc value. This provides the BIAS BIAS 5V 1K6 10V 3K3 12V 3K9 15V 5K1 www.diodes.com A Product Line of Diodes Incorporated ZXGD3103N8 R REF 2K0 4K3 5K1 6K8 July 2010 © Diodes Incorporated ...

Page 11

... Package Outline and Dimensions ZXGD3103N8 Document number: DS32255 Rev Product Line of Diodes Incorporated www.diodes.com ZXGD3103N8 July 2010 © Diodes Incorporated ...

Page 12

... Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others ...

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