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PDF ZXGD3108N8 Data sheet ( Hoja de datos )

Número de pieza ZXGD3108N8
Descripción 40V ACTIVE OR-ING MOSFET CONTROLLER
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Description
ZXGD3108N8 is a 40V Active ORing MOSFET Controller designed
for driving a very low RDS(ON) Power MOSFET as an ideal diode. This
replaces the standard rectifier to reduce the forward voltage drop and
overall increase the power transfer efficiency.
The ZXGD3108N8 can be used on both high-side and low-side power
supply units (PSU) with rails up to ±40V. It enables very low RDS(ON)
MOSFETs to operate as ideal diodes as the turn-off threshold is
only -3mV with ±2mV tolerance. In the typical 12V configuration, the
standby power consumption is <5mW as the low quiescent supply
current is <400µA. During PSU fault condition, the ORing Controller
detects the power reduction and rapidly turns off the MOSFET in
<600ns to block reverse current flow and avoid the common bus
voltage dropping.
Applications
Active ORing Controller in:
(N+1) Redundant Power Supplies
Telecom and Networking
Data Centers and Servers
ZXGD3108N8
40V ACTIVE OR'ING MOSFET CONTROLLER IN SO8
Features
Active ORing MOSFET Controller for High- or Low-Side PSU
Ideal Diode to Reduce Forward Voltage Drop
-3mV Typical Turn-Off Threshold with ±2mV Tolerance
40V Drain Voltage Rating
25V VCC Rating
<5mW Standby Power with Quiescent Supply Current <400µA
<600ns Turn-Off Time to Minimize Reverse Current
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 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)
-ve Rail
Typical Configuration for
Low-Side -ve Supply Rail
VD VS
-ve Vout
DRAIN
VG
GATE GND
ZXGD3108
Vcc
C1
GND Rail
GND
SO-8
Top View
DNC
DNC
GND
GND
GND
GND
GATE
GATE
DRAIN
DRAIN
DNC
DNC
VCC
VCC
Vcc
Pin Name
DNC
GND
GATE
DRAIN
VCC
Pin Function
Do Not Connect
Power Ground
Gate Drive
Drain Sense
Power Supply
Ordering Information (Note 4)
Product
ZXGD3108N8TC
Marking
ZXGD3108
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.
Marking Information
ZXGD
3108
YY WW
ZXGD = Product Type Marking Code, Line 1
3108 = Product Type Marking Code, Line 2
YY = Year (ex: 16 = 2016)
WW = Week (01 - 53)
ZXGD3108N8
Document Number DS36530 Rev. 2 - 2
1 of 10
www.diodes.com
January 2016
© Diodes Incorporated

1 page




ZXGD3108N8 pdf
ZXGD3108N8
Typical Application Circuits
-12V Rail
PSU
(A)
GND Rail
-12V Rail
PSU
(A)
GND Rail
30V N-channel
Power MOSFET
VD VS
DRAIN
VG
GATE GND
ZXGD3108
Vcc
30V N-channel
Power MOSFET
VD VS
DRAIN
VG
GATE GND
ZXGD3108
Vcc
C1
C1
Common -12V Bus
-12V
LOAD
GND
Common GND
Focus Application of the ZXGD3108 ORing Controller is for Redundant Low-Side -12V Power Supply Rail
+12V Rail
30V N-channel
Power MOSFET
VS VD
Common +12V Bus
+12V
PSU
(A)
VG
GATE
DRAIN Vcc
ZXGD3108 C1
GND
+10V
Vcc
GND
LOAD
GND Rail
+12V Rail
30V N-channel
Power MOSFET
VS VD
PSU
(B)
VG
GATE
DRAIN Vcc
ZXGD3108 C1
GND
GND
Common GND
GND Rail
Example of the ZXGD3108 ORing Controller in a Redundant High-Side +12V Power Supply Rail with VCC Supply
ZXGD3108N8
Document Number DS36530 Rev. 2 - 2
5 of 10
www.diodes.com
January 2016
© Diodes Incorporated

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