ZXGD3101T8TA Diodes Inc, ZXGD3101T8TA Datasheet

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ZXGD3101T8TA

Manufacturer Part Number
ZXGD3101T8TA
Description
MOSFET & Power Driver ICs SYNCHRNS RCTFR CTRLR FOR FLYBCK CNVRTRS
Manufacturer
Diodes Inc
Type
High Side/Low Sider
Datasheet

Specifications of ZXGD3101T8TA

Rise Time
305 ns
Fall Time
20 ns
Supply Voltage (min)
5 V
Supply Current
8 mA
Maximum Power Dissipation
500 mW
Maximum Operating Temperature
+ 150 C
Mounting Style
SMD/SMT
Maximum Turn-off Delay Time
15 ns
Maximum Turn-on Delay Time
525 ns
Minimum Operating Temperature
- 40 C
Number Of Drivers
1
Number Of Outputs
1
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ZXGD3101T8TA
Manufacturer:
DIODES
Quantity:
12 000
ZXGD3101T8
Synchronous rectifier controller for flyback converters.
Description
The ZXGD3101 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 detail
Ordering information
Issue 4 - January 2009
© Diodes Incorporated 2009
ZXGD3101T8TA
Turn-off propagation delay 15ns and turn-
off time 20ns
Suitable for Discontinuous Mode (DCM),
Critical Conduction Mode (CrCM) and
Continuous
operation
Compliant with Energy Star V2.0 and
European Code of Conduct V3
Low component count
Halogen free
5-15V V
GATEH
GATEL
Device
REF
N/C
CC
range
conduction
1
2
3
4
SM8
Status
Active
8
7
6
5
mode
DRAIN
BIAS
GND
V
Package
CC
SM8
(CCM)
ZXGD3101
Part Mark
1
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
Flyback converters in:
Refer to documents; AN54, DN90, DN91 and
DN94 available from the website
Typical configuration
Adaptors
LCD monitors
Server PSU’s
Set top boxes
Diodes Incorporated
Reel size
(inches)
A Product Line of
7
Transformer
Tape width
(mm)
R
12
R E F
S yn ch ro n o u s R e ctifie r
D R AIN
GAT EL
R EF
M O S FE T
BIAS
GAT EH GN D
www.diodes.com
ZX G D
3 1 0 1
www.zetex.com
R
B IA S
Quantity
per reel
Vcc
1000
C1

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ZXGD3101T8TA Summary of contents

Page 1

... GATEH 4 5 SM8 Ordering information Device Status ZXGD3101T8TA Active Issue 4 - January 2009 © Diodes Incorporated 2009 A Product Line of Diodes Incorporated 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

... Junction to ambient (†) Junction to lead NOTES: (*) Mounted on minimum 1oz copper on FR4 PCB in still air conditions (†) Output Drivers - Junction to solder point at end of the lead 5 and 6 ESD Rating Model Human body Machine Issue 4 - January 2009 © Diodes Incorporated 2009 Symbol SOURCE ...

Page 3

... Gate fall time NOTES: (**) GATEH connected to GATEL (*) R = 100KΩ 0 († 100KΩ 0 (a) (Refer to Fig 4; Test circuit and Fig 5; Timing diagram on page 11 Issue 4 - January 2009 © Diodes Incorporated 2009 = 25°C; A =3kΩ Symbol Conditions ≤ -200m V V DRAIN I OP ≥ DRAIN (*) V ...

Page 4

... This pin is connected to V source 1.6 times I 8 DRAIN Drain connection This pin connects directly to the synchronous MOSFET Drain terminal. NOTES: 1. BIAS and REF pins should be assumed GND+0.7V Issue 4 - January 2009 © Diodes Incorporated 2009 + G ate D rive C ontrol H igh com parator - + T urn-on/off C ontrol H igh ...

Page 5

... At zero current the detector output voltage is zero and the synchronous MOSFET Gate voltage is pulled low by the GATEL, turning the device off. M OSF ET D rain Voltage M OSF ET Gate Voltage M OSF ET Gate C urrent Issue 4 - January 2009 © Diodes Incorporated 2009 Body D iode 2 C onduction D rain 1 current zero 6 ...

Page 6

... Fig 1a: Continuous Conduction Mode (CCM) Fig 1b: Critical Conduction Mode (CrCM) Fig 1c: Discontinuous Conduction Mode (DCM) Issue 4 - January 2009 © Diodes Incorporated 2009 Figure 1. Typical waveforms 6 ZXGD3101T8 www.zetex.com www.diodes.com ...

Page 7

... Typical characteristics Turn-off offset voltage Issue 4 - January 2009 © Diodes Incorporated 2009 ZXGD3101T8 Turn-off offset voltage 7 www.zetex.com www.diodes.com ...

Page 8

... Typical characteristics Turn-off offset voltage Issue 4 - January 2009 © Diodes Incorporated 2009 ZXGD3101T8 8 www.zetex.com www.diodes.com ...

Page 9

... The decoupling capacitor should be close to the V pin, and should be a X7R type. For more detailed information refer to application note AN54. Issue 4 - January 2009 © Diodes Incorporated 2009 and ground due to the possibility of high CC and R is important to the optimum device ...

Page 10

... In Figure 2 - Example connection for low side synchronous rectification T ransform clam p R clam p RdC RdD D clam controller Figure 3 - Example connection for high side synchronous rectification Issue 4 - January 2009 © Diodes Incorporated 2009 Vcc ransform BIAS D R AIN GAT EL GAT Qpri ...

Page 11

... -600mV V G Issue 4 - January 2009 © Diodes Incorporated 2009 R R REF BIAS 3 kΩ 1.8kΩ REF BIAS Vcc ZXGD R DRAIN H 3101 GATEL GATEH GND R L Figure 4: Test circuit Body Diode Conduction Zero voltage transition NOTE: GATE H AND GATE L ARE CONNECTED ...

Page 12

... Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches Soldering footprint 2.8 0.110 4.6 6.8 0.181 0.268 mm inches 0.95 1.52 0.037 0.060 Issue 4 - January 2009 © Diodes Incorporated 2009 Inches DIM Min. Max. Typ. - 0.067 - e1 0.0008 0.004 - 0.0275 He ...

Page 13

... Issue 4 - January 2009 © Diodes Incorporated 2009 Intentionally left blank 13 ZXGD3101T8 www.zetex.com www.diodes.com ...

Page 14

... Terms and Conditions All products are sold subjects to Diodes Inc. terms and conditions of sale, and this disclaimer (save in the event of a conflict between the two when the terms of the contract shall prevail) according to region, supplied at the time of order acknowledgement. ...

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