Dual CoolTM PQFN package
Max r
Max r
High performance technology for extremely low r
SyncFETTM Schottky Body Diode
RoHS Compliant
= 1.5 mΩ at VGS = 10 V, ID = 38 A
DS(on)
= 1.7 mΩ at VGS = 4.5 V, ID = 36 A
DS(on)
DS(on)
TM
General Description
This N-Channel SyncFETTM is produced using Fairchild
Semiconductor’s advanced PowerTrench
Advancements in both silicon and package technologies have
been combined to offer the lowest r
excellent switching performance by extremely low Junction-toAmbient thermal resistance. This device has the added benefit
of an efficient monolithic Schottky body diode.
Applications
Synchronous Rectifier for DC/DC Converters
Telecom Secondary Side Rectification
High End Server/Workstation Vcore Low Side
Drain to Source Voltage25V
Gate to Source Voltage 12V
Drain Current -Continuous (Package limited) TC = 25 °C 90
-Pulsed140
Single Pulse Avalanche Energy (Note 3)145mJ
Power Dissipation TC = 25 °C89
Power Dissipation T
Operating and Storage Junction Temperature Range-55 to +150°C
Thermal Resistance, Junction to Case (Top Source)2.8
Thermal Resistance, Junction to Case (Bottom Drain)1.4
Thermal Resistance, Junction to Ambient (Note 1a)38
Thermal Resistance, Junction to Ambient (Note 1b)81
Thermal Resistance, Junction to Ambient (Note 1i)16
Thermal Resistance, Junction to Ambient (Note 1j)23
Thermal Resistance, Junction to Ambient (Note 1k)11
09DCFDMS8558SDCPower 5613’’12 mm3000 units
= 25°C unless otherwise noted
A
= 25 °C (Note 1a)38
A
= 25 °C (Note 1a)3.3
A
1
TM
A -Continuous T
W
°C/W
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Page 2
FDMS8558SDC N-Channel PowerTrench
Electrical Characteristics T
= 25 °C unless otherwise noted
J
SymbolParameterTest ConditionsMinTypMaxUnits
Off Characteristics
BV
ΔBV
ΔT
I
DSS
I
GSS
DSS
DSS
J
Drain to Source Breakdown VoltageID = 1 mA, VGS = 0 V25V
Breakdown Voltage Temperature
Coefficient
Zero Gate Voltage Drain CurrentVDS = 20 V, V
Gate to Source Leakage CurrentVGS = +12 V/-8 V, V
I
= 10 mA, referenced to 25 °C24mV/°C
D
= 0 V500μA
GS
= 0 V±100nA
DS
On Characteristics
V
GS(th)
ΔV
ΔT
r
DS(on)
g
FS
GS(th)
J
Gate to Source Threshold VoltageVGS = VDS, ID = 1 mA1.11.42.2V
Gate to Source Threshold Voltage
Temperature Coefficient
Static Drain to Source On Resistance
I
= 10 mA, referenced to 25 °C-3mV/°C
D
V
= 10 V, ID = 38 A1.11.5
GS
= 4.5 V, ID = 36 A1.31.7
GS
= 10 V, ID = 38 A, TJ = 125 °C1.62.1
V
GS
Forward TransconductanceVDS = 5 V, ID = 38 A317S
Dynamic Characteristics
C
iss
C
oss
C
rss
R
g
Input Capacitance
Output Capacitance1508pF
Reverse Transfer Capacitance195pF
= 13 V, VGS = 0 V,
V
DS
f = 1 MHz
Gate Resistance0.9Ω
5118pF
Switching Characteristics
t
d(on)
t
r
t
d(off)
t
f
Q
Q
Q
Q
Turn-On De lay Time
Rise Time 8ns
Turn-Off Delay Time51ns
= 13 V, ID = 38 A,
V
DD
V
= 10 V, R
GS
GEN
= 6 Ω
Fall Time 7ns
g
g
gs
gd
Total Gate ChargeVGS = 0 V to 10 V
Total Gate Charge VGS = 0 V to 4.5 V38nC
Gate to Source Gate Charge10nC
Source to Drain Diode Forward Voltage
Reverse Recovery Time
Reverse Recovery Charge49nC
V
= 0 V, IS = 2 A (Note 2)0.60.8
GS
= 0 V, IS = 38 A (Note 2)0.81.2
V
GS
= 38 A, di/dt = 300 A/μs
I
F
2
35ns
V
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Page 3
Thermal Characteristics
FDMS8558SDC N-Channel PowerTrench
R
θJC
R
θJC
R
θJA
R
θJA
R
θJA
R
θJA
R
θJA
R
θJA
R
θJA
R
θJA
R
θJA
R
θJA
R
θJA
R
θJA
NOTES:
1. R
is determined with the device mounted on a FR-4 board using a specified pad of 2 oz copper as shown below. R
θJA
by the user's board design.
Thermal Resistance, Junction to Case (Top Source)2.8
Thermal Resistance, Junction to Case (Bottom Drain)1.4
Thermal Resistance, Junction to Ambient (Note 1a)38
Thermal Resistance, Junction to Ambient (Note 1b)81
Thermal Resistance, Junction to Ambient (Note 1c)27
Thermal Resistance, Junction to Ambient (Note 1d)34
Thermal Resistance, Junction to Ambient (Note 1e)16
Thermal Resistance, Junction to Ambient (Note 1f)19
Thermal Resistance, Junction to Ambient (Note 1g)26
Thermal Resistance, Junction to Ambient (Note 1h)61
Thermal Resistance, Junction to Ambient (Note 1i)16
Thermal Resistance, Junction to Ambient (Note 1j)23
Thermal Resistance, Junction to Ambient (Note 1k)11
Thermal Resistance, Junction to Ambient (Note 1l)13
a. 38 °C/W when mounted on
2
a 1 in
pad of 2 oz copper
is guaranteed by design while R
θJC
b. 81 °C/W when mounted on
a minimum pad of 2 oz copper
is determined
θCA
°C/W
®
SyncFET
TM
SF
SS
DF
DS
G
c. Still air, 20.9x10.4x12.7mm Aluminum Heat Sink, 1 in2 pad of 2 oz copper
d. Still air, 20.9x10.4x12.7mm Aluminum Heat Sink, minimum pad of 2 oz copper
e. Still air, 45.2x41.4x11.7mm Aavid Thermalloy Part # 10-L41B-11 Heat Sink, 1 in
f. Still air, 45.2x41.4x11.7mm Aavid Thermalloy Part # 10-L41B-11 Heat Sink, minimum pad of 2 oz copper
g. 200FPM Airflow, No Heat Sink,1 in2 pad of 2 oz copper
h. 200FPM Airflow, No Heat Sink, minimum pad of 2 oz copper
i. 200FPM Airflow, 20.9x10.4x12.7mm Aluminum Heat Sink, 1 in2 pad of 2 oz copper
j. 200FPM Airflow, 20.9x10.4x12.7mm Aluminum Heat Sink, minimum pad of 2 oz copper
k. 200FPM Airflow, 45.2x41.4x11.7mm Aavid Thermalloy Part # 10-L41B-11 Heat Sink, 1 in2 pad of 2 oz copper
l. 200FPM Airflow, 45.2x41.4x11.7mm Aavid Thermalloy Part # 10-L41B-11 Heat Sink, minimum pad of 2 oz copper
Fairchild’s SyncFETTM process embeds a Schottky diode in
parallel with PowerTrench MOSFET. This diode exhibits similar
characteristics to a discrete external Schottky diode in parallel
with a MOSFET. Figure 14 shows the reverse recovery
characteristic of the FDMS8558SDC.
Figure 14. FDMS8558SDC SyncFET
TM
body
diode reverse recovery characteristic
Schottky barrier diodes exhibit significant leakage at high temperature and high reverse voltage. This will increase the power
in the device.
NOTES: UNLESS OTHERWISE SPECIFIED
A) PACKAGE STAND ARD REFERENC E:
JEDEC MO-240, ISSUE A, VAR. AA,
DATED OCTOBER 2002.
B) ALL DIMENS IONS ARE IN MILLIMETERS.
C) DIMENSIONS DO NOT INCLUDE B URRS
OR MOLD FLASH. MOLD FLASH OR
BURRS DOES NOT EXCEED 0.10MM .
D) DIME NSI O NI N G AN D T O L E RA N C ING PER
ASME Y14.5M-1994.
E) IT IS RECOMMENDED TO HAVE NO TR ACE S
The following includes registered and unregistered trademarks and se rvice marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not
intended to be an exhaustive list of all such trademarks.
2Cool™
AccuPower™
AX-CAP™*
®
BitSiC
Build it Now™
CorePLUS™
CorePOWER™
CROSSVOLT™
CTL™
Current Transfer Logic™
DEUXPEED
Dual Cool™
EcoSPARK
EfficentMax™
ESBC™
*Trademarks of System General Corporation, used under license by Fairchild Semiconductor.
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE
RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY
PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY
THEREIN, WHICH COVERS THESE PRODUCTS.
FDMS8558SDC N-Channel PowerTrench
®
SyncFET
TM
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE
EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used here in:
1. Life support devices or systems are devices or systems which, (a) are
intended for surgical implant into the body or (b) support or sustain life,
and (c) whose failure to perform when properly used in accordance with
instructions for use provided in the labeling, can be reasonably
expected to result in a significant injury of the user.
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Counterfeiting of semiconductor parts is a growing problem in the industry. All manufactures of semiconductor products are experien cing counterfeiting of their
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PRODUCT STATUS DEFINITIONS
Definition of Terms
.
2. A critical component in any component of a life support, device, or
system whose failure to perform can be reasonably expected to cause
the failure of the life support device or system, or to affect its safety or
effectiveness.
Datasheet IdentificationProduct StatusDefinition
Advance InformationFormative / In Design
PreliminaryFirst Production
No Identification NeededFull Production
ObsoleteNot In Production
Datasheet contains the design specifications for product development. Specifications
may change in any manner without notice.
Datasheet contains preliminary data; supplementary data will be published at a later
date. Fairchild Semiconductor reserves the right to make changes at any time without
notice to improve design.
Datasheet contains final specifications. Fairchild Semiconductor reserves the right to
make changes at any time without notice to improve the design.
Datasheet contains specifications on a product that is discontinued by Fairchild
Semiconductor. The dat asheet is for refere nce information only.