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FDS6680S
February 2000 PRELIMINARY
FDS6680S
30V N-Channel PowerTrench SyncFETTM
General Description
The FDS6680S is designed to replace a single SO-8 MOSFET and Schottky diode in synchronous DC:DC power supplies. This 30V MOSFET is designed to maximize power conversion efficiency, providing a low RDS(ON) and low gate charge. The FDS6680S includes an integrated Schottky diode using Fairchild's monolithic SyncFET technology. The performance of the FDS6680S as the low-side switch in a synchronous rectifier is indistinguishable from the performance of the FDS6680 in parallel with a Schottky diode.
Features
* 11.5 A, 30 V. RDS(ON) = 0.011 @ VGS = 10 V RDS(ON) = 0.016 @ VGS = 4.5 V
* * *
Includes SyncFET Schottky body diode Low gate charge (17nC typical) High performance trench technology for extremely low RDS(ON) and fast switching High power and current handling capability
Applications
* DC/DC converter * Motor drives
*
D D
D
D
5 6 4 3 2 1
SO-8
S
S
S
G
7 8
Absolute Maximum Ratings
Symbol
VDSS VGSS ID PD Drain-Source Voltage Gate-Source Voltage Drain Current - Continuous - Pulsed
TA=25 C unless otherwise noted
o
Parameter
Ratings
30 20
(Note 1a)
Units
V V A W
11.5 50 2.5 1.2 1 -55 to +150
Power Dissipation for Single Operation
(Note 1a) (Note 1b) (Note 1c)
TJ, TSTG
Operating and Storage Junction Temperature Range
C
Thermal Characteristics
RJA RJC Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case
(Note 1a) (Note 1)
50 25
C/W C/W
Package Marking and Ordering Information
Device Marking FDS6680S
2000 Fairchild Semiconductor Corporation
Device FDS6680S
Reel Size 13''
Tape width 12mm
Quantity 2500 units
FDS6680S Rev B (W)
FDS6680S
Electrical Characteristics
Symbol
BVDSS BVDSS TJ IDSS IGSSF IGSSR
TA = 25C unless otherwise noted
Parameter
Drain-Source Breakdown Voltage Breakdown Voltage Temperature Coefficient Zero Gate Voltage Drain Current Gate-Body Leakage, Forward Gate-Body Leakage, Reverse
(Note 2)
Test Conditions
VGS = 0 V, ID = 1 mA ID = 1 mA, Referenced to 25C VDS = 24 V, VGS = 20 V, VGS = -20 V VGS = 0 V VDS = 0 V VDS = 0 V
Min
30
Typ
Max Units
V
Off Characteristics
19 1 100 -100 mV/C mA nA nA
On Characteristics
VGS(th) VGS(th) TJ RDS(on)
Gate Threshold Voltage Gate Threshold Voltage Temperature Coefficient Static Drain-Source On-Resistance On-State Drain Current Forward Transconductance
VDS = VGS, ID = 1 mA ID = 1 mA, Referenced to 25C VGS = 10 V, ID = 11.5 A VGS = 4.5 V, ID = 9.5 A VGS=10 V, ID =11.5A, TJ=125C VGS = 10 V, VDS = 15 V, VDS = 5 V ID = 11.5 A
1
2 -3.3 9.5 13.5 17
3
V mV/C
11 16 23
m
ID(on) gFS
50 27
A S
Dynamic Characteristics
Ciss Coss Crss Input Capacitance Output Capacitance Reverse Transfer Capacitance
(Note 2)
VDS = 15 V, f = 1.0 MHz
V GS = 0 V,
2010 526 186
pF pF pF
Switching Characteristics
td(on) tr td(off) tf Qg Qgs Qgd Turn-On Delay Time Turn-On Rise Time Turn-Off Delay Time Turn-Off Fall Time Total Gate Charge Gate-Source Charge Gate-Drain Charge
VDS = 15 V, VGS = 10 V,
ID = 1 A, RGEN = 6
10 10 34 14
18 18 55 23 24
ns ns ns ns nC nC nC
VDS = 15 V, VGS = 5 V
ID = 11.5 A,
17 6.2 5.5
Drain-Source Diode Characteristics and Maximum Ratings
IS VSD trr Qrr Maximum Continuous Drain-Source Diode Forward Current Drain-Source Diode Forward Voltage Diode Reverse Recovery Time Diode Reverse Recovery Charge VGS = 0 V, IS = 3.5 A VGS = 0 V, IS = 7 A IF = 11.5A, diF/dt = 300 A/s
(Note 2) (Note 2)
3.5 0.45 0.6 20 19.7 0.7
A V nS nC
(Note 3)
Notes: 1. RJA is the sum of the junction-to-case and case-to-ambient thermal resistance where the case thermal reference is defined as the solder mounting surface of the drain pins. RJC is guaranteed by design while RCA is determined by the user's board design.
a) 50/W when 2 mounted on a 1 in pad of 2 oz copper
b) 105/W when 2 mounted on a .04 in pad of 2 oz copper
c) 125/W when mounted on a minimum pad.
Scale 1 : 1 on letter size paper 2. Pulse Test: Pulse Width < 300s, Duty Cycle < 2.0% 3. See "SyncFET Schottky body diode characteristics" below.
FDS6680S Rev A (W)
FDS6680S
Typical Characteristics
50 4.5V 4.0V 5.0V ID, DRAIN CURRENT (A) 40 7.0V RDS(ON), NORMALIZED DRAIN-SOURCE ON-RESISTANCE VGS = 10V
2 1.8 VGS = 4.0V 1.6 1.4 1.2 1 0.8 0 1 2 3 0 10 20 30 40 50 ID, DRAIN CURRENT (A) 4.5V 5.0V 6.0V 7.0V 8.0V 10V
30 3.5V 20
10
3.0V
0 VDS, DRAIN-SOURCE VOLTAGE (V)
Figure 1. On-Region Characteristics.
Figure 2. On-Resistance Variation with Drain Current and Gate Voltage.
0.04 RDS(ON), ON-RESISTANCE (OHM)
1.8 RDS(ON), NORMALIZED DRAIN-SOURCE ON-RESISTANCE ID = 11.5A VGS = 10V 1.4
ID = 6A
0.03
1
0.02 TA = 100oC 0.01 TA = 25oC
0.6
0.2 -50 -25 0 25 50 75 100 TJ, JUNCTION TEMPERATURE (oC)
0 2 4 6 8 10 VGS, GATE TO SOURCE VOLTAGE (V)
Figure 3. On-Resistance Variation with Temperature.
50 VDS = 5V ID, DRAIN CURRENT (A) 40
Figure 4. On-Resistance Variation with Gate-to-Source Voltage.
10 IS, REVERSE DRAIN CURRENT (A)
100oC
TA = -55oC 25oC
VGS = 0V
1
30
0.1
TA = 100oC 25oC
20
0.01
-55oC
10
0 1 2 3 4 5 VGS, GATE TO SOURCE VOLTAGE (V)
0.001 0 0.2 0.4 0.6 0.8 VSD, BODY DIODE FORWARD VOLTAGE (V)
Figure 5. Transfer Characteristics.
Figure 6. Body Diode Forward Voltage Variation with Source Current and Temperature.
FDS6680S Rev A (W)
FDS6680S
Typical Characteristics (continued)
10 VGS, GATE-SOURCE VOLTAGE (V) ID =11.5A 8 CAPACITANCE (pF) 15V 6 VDS = 5V 10V
3000 2500 2000 1500 1000 500 0 0 10 20 Qg, GATE CHARGE (nC) 30 40 0 10 20 30 VDS, DRAIN TO SOURCE VOLTAGE (V) COSS CRSS CISS f = 1MHz VGS = 0 V
4
2
0
Figure 7. Gate Charge Characteristics.
100 50 100s 1ms 10 10ms 100ms 1s 1 VGS = 10V SINGLE PULSE RJA = 125oC/W TA = 25oC 0.01 0.1 1 10 100 VDS, DRAIN-SOURCE VOLTAGE (V) DC 10s P(pk), PEAK TRANSIENT POWER (W)
Figure 8. Capacitance Characteristics.
RDS(ON) LIMIT
ID, DRAIN CURRENT (A)
40
SINGLE PULSE RJA = 125C/W TA = 25C
30
20
0.1
10
0 0.01
0.1
1
10
100
1000
t1, TIME (sec)
Figure 9. Maximum Safe Operating Area.
Figure 10. Single Pulse Maximum Power Dissipation.
r(t), NORMALIZED EFFECTIVE TRANSIENT THERMAL RESISTANCE
1
D = 0.5 0.2
0.1
0.1 0.05 0.02
RJA(t) = r(t) + RJA RJA = 125 C/W P(pk)
0.01 SINGLE PULSE
t1 t2 TJ - TA = P * RJA(t) Duty Cycle, D = t1 / t2
0.01
0.001 0.0001
0.001
0.01
0.1 t1, TIME (sec)
1
10
100
1000
Figure 11. Transient Thermal Response Curve.
Thermal characterization performed using the conditions described in Note 1c. Transient thermal response will change depending on the circuit board design.
FDS6680S Rev A (W)
FDS6680S
Typical Characteristics (continued)
SyncFET Schottky Body Diode Characteristics
Fairchild's SyncFET 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 12 shows the reverse recovery characteristic of the FDS6680S. Schottky barrier diodes exhibit significant leakage at high temperature and high reverse voltage. This will increase the power in the device.
IDSS, REVERSE LEAKAGE CURRENT (A) 0.1
0.01
100oC
Current: 3A/div
0.001 25oC
0.0001 0 10 20 30 VDS, REVERSE VOLTAGE (V)
10nS/div
Figure 14. SyncFET body diode reverse leakage versus drain-source voltage and temperature.
Figure 12. FDS6680S SyncFET body diode reverse recovery characteristic.
For comparison purposes, Figure 13 shows the reverse recovery characteristics of the body diode of an equivalent size MOSFET produced without SyncFET (FDS6680).
Current: 3A/div
10nS/div
Figure 13. Non-SyncFET (FDS6680) body diode reverse recovery characteristic.
FDS6680S Rev A (W)
SO-8 Tape and Reel Data and Package Dimensions
SOIC(8lds) Packaging Configuration: Figure 1.0
Packaging Description:
EL ECT ROST AT IC SEN SIT IVE DEVICES
DO NO T SHI P OR STO RE N EAR ST RO NG EL ECT ROST AT IC EL ECT RO M AGN ETI C, M AG NET IC O R R ADIO ACT IVE FI ELD S
TNR D ATE PT NUMB ER PEEL STREN GTH MIN ___ __ ____ __ ___gms MAX ___ ___ ___ ___ _ gms
Antistatic Cover Tape
ESD Label
SOIC-8 parts are shipped in tape. The carrier tape is made from a dissipative (carbon filled) polycarbonate resin. The cover tape is a multilayer film (Heat Activated Adhesive in nature) primarily composed of polyester film, adhesive layer, sealant, and anti-static sprayed agent. These reeled parts in standard option are shipped with 2,500 units per 13" or 330cm diameter reel. The reels are dark blue in color and is made of polystyrene plastic (antistatic coated). Other option comes in 500 units per 7" or 177cm diameter reel. This and some other options are further described in the Packaging Information table. These full reels are individually barcode labeled and placed inside a standard intermediate box (illustrated in figure 1.0) made of recyclable corrugated brown paper. One box contains two reels maximum. And these boxes are placed inside a barcode labeled shipping box which comes in different sizes depending on the number of parts shipped.
Static Dissipative Embossed Carrier Tape
F63TNR Label Customized Label
F852 NDS 9959 F852 NDS 9959 F852 NDS 9959 F852 NDS 9959
SOIC (8lds) Packaging Information Packaging Option Packaging type Qty per Reel/Tube/Bag Reel Size Box Dimension (mm) Max qty per Box Weight per unit (gm) Weight per Reel (kg) Note/Comments Standard (no flow code) TNR 2,500 13" Dia 343x64x343 5,000 0.0774 0.6060 L86Z Rail/Tube 95 530x130x83 30,000 0.0774 F011 TNR 4,000 13" Dia 343x64x343 8,000 0.0774 0.9696 D84Z TNR 500 7" Dia 184x187x47 1,000 0.0774 0.1182
F852 NDS 9959
Pin 1
SOIC-8 Unit Orientation
343mm x 342mm x 64mm Standard Intermediate box ESD Label F63TNR Label sample
LOT: CBVK741B019 FSID: FDS9953A QTY: 2500 SPEC:
F63TNLabel F63TN Label ESD Label
(F63TNR)3
D/C1: D9842 D/C2:
QTY1: QTY2:
SPEC REV: CPN: N/F: F
SOIC(8lds) Tape Leader and Trailer Configuration: Figure 2.0
Carrier Tape Cover Tape
Components Trailer Tape 640mm minimum or 80 empty pockets Leader Tape 1680mm minimum or 210 empty pockets
July 1999, Rev. B
SO-8 Tape and Reel Data and Package Dimensions, continued
SOIC(8lds) Embossed Carrier Tape Configuration: Figure 3.0
T E1
P0
D0
F K0 Wc B0 E2 W
Tc A0 P1 D1
User Direction of Feed
Dimensions are in millimeter Pkg type SOIC(8lds) (12mm)
A0
6.50 +/-0.10
B0
5.30 +/-0.10
W
12.0 +/-0.3
D0
1.55 +/-0.05
D1
1.60 +/-0.10
E1
1.75 +/-0.10
E2
10.25 min
F
5.50 +/-0.05
P1
8.0 +/-0.1
P0
4.0 +/-0.1
K0
2.1 +/-0.10
T
0.450 +/0.150
Wc
9.2 +/-0.3
Tc
0.06 +/-0.02
Notes: A0, B0, and K0 dimensions are determined with respect to the EIA/Jedec RS-481 rotational and lateral movement requirements (see sketches A, B, and C).
20 deg maximum Typical component cavity center line
0.5mm maximum
B0 20 deg maximum component rotation
0.5mm maximum
Sketch A (Side or Front Sectional View)
Component Rotation
A0 Sketch B (Top View)
Typical component center line
Sketch C (Top View)
Component lateral movement
SOIC(8lds) Reel Configuration: Figure 4.0
Component Rotation
W1 Measured at Hub
Dim A Max
Dim A max
Dim N
See detail AA
7" Diameter Option
B Min Dim C See detail AA W3
Dim D min
13" Diameter Option
W2 max Measured at Hub DETAIL AA
Dimensions are in inches and millimeters
Tape Size
12mm
Reel Option
7" Dia
Dim A
7.00 177.8 13.00 330
Dim B
0.059 1.5 0.059 1.5
Dim C
512 +0.020/-0.008 13 +0.5/-0.2 512 +0.020/-0.008 13 +0.5/-0.2
Dim D
0.795 20.2 0.795 20.2
Dim N
2.165 55 7.00 178
Dim W1
0.488 +0.078/-0.000 12.4 +2/0 0.488 +0.078/-0.000 12.4 +2/0
Dim W2
0.724 18.4 0.724 18.4
Dim W3 (LSL-USL)
0.469 - 0.606 11.9 - 15.4 0.469 - 0.606 11.9 - 15.4
12mm
13" Dia
(c) 1998 Fairchild Semiconductor Corporation
July 1999, Rev. B
SO-8 Tape and Reel Data and Package Dimensions, continued
SOIC-8 (FS PKG Code S1)
1:1
Scale 1:1 on letter size paper
Dimensions shown below are in: inches [millimeters]
Part Weight per unit (gram): 0.0774
9
September 1998, Rev. A
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks.
ACExTM CoolFETTM CROSSVOLTTM E2CMOSTM FACTTM FACT Quiet SeriesTM FAST(R) FASTrTM GTOTM HiSeCTM
DISCLAIMER
ISOPLANARTM MICROWIRETM POPTM PowerTrench QFETTM QSTM Quiet SeriesTM SuperSOTTM-3 SuperSOTTM-6 SuperSOTTM-8
SyncFETTM TinyLogicTM UHCTM VCXTM
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.
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 herein: 1. Life support devices or systems are devices or 2. A critical component is any component of a life support device or system whose failure to perform can systems which, (a) are intended for surgical implant into be reasonably expected to cause the failure of the life the body, or (b) support or sustain life, or (c) whose support device or system, or to affect its safety or failure to perform when properly used in accordance with instructions for use provided in the labeling, can be effectiveness. reasonably expected to result in significant injury to the user. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Product Status Formative or In Design Definition This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design.
Preliminary
First Production
No Identification Needed
Full Production
Obsolete
Not In Production
This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only.
Rev. D

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