ABSOLUTE MAXIMUM RATINGS TA = 25 °C, unless otherwise noted
Parameter Symbol LimitUnit
Drain-Source Voltage V
Gate-Source Voltage V
T
= 25 °C
C
= 70 °C
T
Continuous Drain Current (T
= 150 °C)
J
C
TA = 25 °C
TA = 70 °C
Pulsed Drain CurrentI
= 25 °C
T
Continuous Source-Drain Diode Current
Avalanche Current
Single-Pulse Avalanche EnergyE
Maximum Power Dissipation
C
TA = 25 °C
L = 0.1 mH
T
= 25 °C
C
T
= 70 °C53
C
T
= 25 °C
A
I
P
TA = 70 °C
Operating Junction and Storage Temperature Range TJ, T
Soldering Recommendations (Peak Temperature)
d, e
DS
GS
I
D
DM
I
AS
AS
S
D
stg
- 100
± 20
a
- 28
a
- 24.9
b, c
- 7.8
b, c
- 6.2
- 40
a
- 28
b, c
- 4.3
- 35
61mJ
83
b, c
5.2
b, c
3.3
- 55 to 150
260
V
A
W
°C
THERMAL RESISTANCE RATINGS
Parameter Symbol TypicalMaximumUnit
Maximum Junction-to-Ambient
Maximum Junction-to-Case (Drain)Steady StateR
Notes:
a. Package Limited.
b. Surface Mounted on 1" x 1" FR4 board.
c. t = 10 s.
d. See Solder Profile (www.vishay.com/ppg?73257
(not plated) as a result of the singulation process in manufacturing. A solder fillet at the exposed copper tip cannot be guaranteed and is not
required to ensure adequate bottom side solder interconnection.
e. Rework Conditions: manual soldering with a soldering iron is not recommended for leadless components.
f. Maximum under Steady State conditions is 65 °C/W.
Document Number: 73436
S09-0271-Rev. C, 16-Feb-09
b, f
t ≤ 10 sR
thJA
thJC
1924
1.21.5
°C/W
). The PowerPAK SO-8 is a leadless package. The end of the lead terminal is exposed copper
www.vishay.com
1
Page 2
Si7489DP
Vishay Siliconix
SPECIFICATIONS TJ = 25 °C, unless otherwise noted
Parameter Symbol Test Conditions Min.Typ.Max.Unit
Static
Drain-Source Breakdown Voltage
V
Temperature CoefficientΔVDS/T
DS
V
Temperature CoefficientΔV
GS(th)
Gate-Source Threshold Voltage
Gate-Source Leakage
Zero Gate Voltage Drain Current
On-State Drain Current
Drain-Source On-State Resistance
Forward Transconductance
Dynamic
b
a
a
a
Input Capacitance
Reverse Transfer Capacitance
Total Gate Charge
Gate-Source Charge
Gate-Drain Charge
Gate Resistance
Tur n -O n De l a y T i m e
Rise Time
Turn-Off Delay Time
Fall Time
Tur n -O n De l a y T i m e
Rise Time
Turn-Off Delay Time
Fall Time
V
DS
J
GS(th)/TJ
V
GS(th)
I
GSS
I
DSS
I
V
D(on)
R
DS(on)
g
fs
C
iss
C
oss
C
rss
Q
g
Q
gs
Q
gd
R
g
t
d(on)
t
r
t
d(off)
t
f
t
d(on)
t
r
t
d(off)
t
f
Drain-Source Body Diode Characteristics
Continuous Source-Drain Diode Current
Pulse Diode Forward Current
a
Body Diode Voltage
Body Diode Reverse Recovery Time
Body Diode Reverse Recovery Charge
Reverse Recovery Fall Time
Reverse Recovery Rise Time
I
S
I
SM
V
SD
t
rr
Q
rr
t
a
t
b
Notes:
a. Pulse test; pulse width ≤ 300 µs, duty cycle ≤ 2 %.
b. Guaranteed by design, not subject to production testing.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the de vice. These are stress rating s only, and functiona l operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
VGS = 0 V, ID = - 250 µA
ID = - 250 µA
V
= VGS, ID = - 250 µA
DS
VDS = 0 V, VGS = ± 20 V
V
V
= - 100 V, V
DS
= - 100 V, V
DS
GS
≥ 5 V, V
DS
V
= - 10 V, ID = - 7.8 A
GS
V
= - 4.5 V, ID = - 7.3 A
GS
= 0 V
GS
= 0 V, TJ = 55 °C
= - 10 V
GS
VDS = - 15 V, ID = - 7.8 A
VDS = - 50 V, V
VDS = - 50 V, V
V
= - 50 V, V
DS
= 0 V, f = 1 MHz
GS
= - 10 V, ID = - 7.8 A
GS
= - 4.5 V, ID = - 7.8 A
GS
f = 1 MHz4Ω
V
= - 50 V, RL = 8.1 Ω
DD
≅ - 6.2 A, V
I
D
V
≅ - 6.2 A, V
I
D
DD
= - 10 V, Rg = 1 Ω
GEN
= - 50 V, RL = 8.1 Ω
= - 4.5 V, Rg = 1 Ω
GEN
TC = 25 °C
IS = - 6.2 A
IF = - 6.2 A, dI/dt = 100 A/µs, TJ = 25 °C
- 100V
- 113
5.5
mV/°C
- 1- 3V
± 100nA
- 1
- 10
- 40A
0.0330.041
0.0380.047
38S
4600
230
175
106160
5481
14
26
1525
2030
110165
100150
4265
160240
100150
100150
- 28
- 40
- 0.8- 1.2V
6090ns
150225nC
46
14
µA
Ω
pFOutput Capacitance
nC
ns
A
ns
www.vishay.com
2
Document Number: 73436
S09-0271-Rev. C, 16-Feb-09
Page 3
TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted
Si7489DP
Vishay Siliconix
40
35
30
25
20
- Drain Current (A)I
15
D
10
5
0
0.00.51.01.52.02.53.0
- Drain-to-Source Voltage (V)
V
DS
VGS = 10 thru 4 V
Output Characteristics
0.042
0.040
0.038
VGS = 4.5 V
3 V
2 V
20
16
12
- Drain Current (A)I
8
D
4
0
0.00.51.01.52.02.53.03.5
V
- Gate-to-Source Voltage (V)
GS
TA = 125 °C
25 °C
Transfer Characteristics
7000
6000
5000
4000
C
iss
- 55 °C
- On-Resistance (Ω)
0.036
DS(on)
R
0.034
0.032
0510152025303540
- Drain Current (A)
I
D
VGS = 10 V
On-Resistance vs. Drain Current and Gate Voltage
10
ID = 7.8 A
8
VDS = 50 V
6
VDS = 80 V
4
- Gate-to-Source Voltage (V)
GS
2
V
0
0 20406080100120
Qg - Total Gate Charge (nC)
Gate Charge
3000
C - Capacitance (pF)
2000
C
oss
C
1000
0
0 1020304050607080
rss
VDS - Drain-to-Source Voltage (V)
Capacitance
2.3
ID = 7.8 A
2.0
1.7
1.4
- On-Resistance
(Normalized)
1.1
DS(on)
R
0.8
0.5
- 50 - 250255075100 125150
VGS = 10 V, 4.5 V
- Junction Temperature (°C)
T
J
On-Resistance vs. Junction Temperature
Document Number: 73436
S09-0271-Rev. C, 16-Feb-09
www.vishay.com
3
Page 4
Si7489DP
Vishay Siliconix
TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted
40
TJ = 150 °C
10
- Source Current (A)I
S
1
0.000.20.40.60.8
- Source-to-Drain Voltage (V)
V
SD
Source-Drain Diode Forward Voltage
2.4
2.2
2.0
1.8
(V)
1.6
GS(th)
V
1.4
1.2
1.0
TJ = 25 °C
ID = 250 µA
1.01.2
- Drain-to-Source On-Resistance (Ω)
DS(on)
R
Power (W)
0.08
ID = 7.8 A
0.07
TA = 125 °C
0.06
0.05
0.04
0.03
0.02
2345678910
VGS - Gate-to-Source Voltage (V)
T
A
= 25 °C
On-Resistance vs. Gate-to-Source Voltage
35
30
25
20
15
10
5
0.8
- 50 - 250255075 100 125 150 175
www.vishay.com
4
- Temperature (°C)
T
J
Threshold Voltage
- Drain Current (A)I
D
0
0.010.11101001000
100
Limited by
R
DS(on)*
10
1
0.1
0.01
0.001
0.11101000
* V
> minimum VGS at which R
GS
TA = 25 °C
Single Pulse
- Drain-to-Source Voltage (V)
V
DS
DS(on)
100 µs
1 ms
10 ms
100 ms
1 s
10 s
DC
100
isspecified
Safe Operating Area, Junction-to-Ambient
Time (s)
Single Pulse Power, Junction-to-Ambient
Document Number: 73436
S09-0271-Rev. C, 16-Feb-09
Page 5
TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted
Si7489DP
Vishay Siliconix
35
30
25
Package Limited
20
15
- Drain Current (A)
10
D
I
5
0
0255075100125150
TC - Case Temperature (°C)
Current Derating*
100
Power (W)
100
80
60
40
20
0
255075100125150
TC - Case Temperature (°C)
Power Derating
10
- Peak Avalanche Current (A)
C
I
1
0.0000010.00010.01
TA=
L·I
A
BV - V
DD
0.00001
- Time In Avalanche (s)
T
A
0.001
Single Pulse Avalanche Capability
* The power dissipation PD is based on T
dissipation limit for cases where additional heatsinking is used. It is used to determine the current rating, when this rating falls below the package
= 150 °C, using junction-to-case thermal resistance, and is more useful in settling the upper
J(max)
limit.
Document Number: 73436
S09-0271-Rev. C, 16-Feb-09
www.vishay.com
5
Page 6
Si7489DP
Vishay Siliconix
TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted
Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silic on
Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and
reliability data, see www.vishay.com/ppg?73436
www.vishay.com
6
.
Document Number: 73436
S09-0271-Rev. C, 16-Feb-09
Page 7
www.vishay.com
PowerPAK® SO-8, (Single/Dual)
Package Information
Vishay Siliconix
W
1
2
3
4
θ
c
Notes
1.
Inch will govern.
2
Dimensions exclusive of mold gate burrs.
3.
Dimensions exclusive of mold flash and cutting burrs.
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
1
Document Number: 71655
Page 8
VISHAY SILICONIX
www.vishay.com
Power MOSFETs
Application Note AN821
PowerPAK® SO-8 Mounting and Thermal Considerations
by Wharton McDaniel
MOSFETs for switching applications are now available with
die on resistances around 1 m and with the capability to
handle 85 A. While these die capabilities represent a major
advance over what was available just a few years ago, it is
important for power MOSFET packaging technology to keep
pace. It should be obvious that degradation of a high
performance die by the package is undesirable. PowerPAK
is a new package technology that addresses these issues.
In this application note, PowerPAK’s construction is
described. Following this mounting information is presented
including land patterns and soldering profiles for maximum
reliability. Finally, thermal and electrical performance is
discussed.
THE PowerPAK PACKAGE
The PowerPAK package was developed around the SO-8
package (figure 1). The PowerPAK SO-8 utilizes the same
footprint and the same pin-outs as the standard SO-8. This
allows PowerPAK to be substituted directly for a standard
SO-8 package. Being a leadless package, PowerPAK SO-8
utilizes the entire SO-8 footprint, freeing space normally
occupied by the leads, and thus allowing it to hold a larger
die than a standard SO-8. In fact, this larger die is slightly
larger than a full sized DPAK die. The bottom of the die
attach pad is exposed for the purpose of providing a direct,
low resistance thermal path to the substrate the device is
mounted on. Finally, the package height is lower than the
standard SO-8, making it an excellent choice for
applications with space constraints.
PowerPAK SO-8 SINGLE MOUNTING
The PowerPAK single is simple to use. The pin arrangement
(drain, source, gate pins) and the pin dimensions are the
same as standard SO-8 devices (see figure 2). Therefore, the
PowerPAK connection pads match directly to those of the
SO-8. The only difference is the extended drain connection
area. To take immediate advantage of the PowerPAK SO-8
single devices, they can be mounted to existing SO-8 land
patterns.
Standard SO-8PowerPAK SO-8
Fig. 2
The minimum land pattern recommended to take full
advantage of the PowerPAK thermal performance see
Application Note 826, Recommended Minimum Pad
Patterns With Outline Drawing Access for Vishay Siliconix
MOSFETs. Click on the PowerPAK SO-8 single in the index
of this document.
In this figure, the drain land pattern is given to make full
contact to the drain pad on the PowerPAK package.
This land pattern can be extended to the left, right, and top
of the drawn pattern. This extension will serve to increase
the heat dissipation by decreasing the thermal resistance
from the foot of the PowerPAK to the PC board and
therefore to the ambient. Note that increasing the drain land
area beyond a certain point will yield little decrease
in foot-to-board and foot-to-ambient thermal resistance.
Under specific conditions of board configuration, copper
weight and layer stack, experiments have found that
more than about 0.25 in
(in addition to the drain land) will yield little improvement in
thermal performance.
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
1
Document Number: 71622
Page 9
Application Note AN821
www.vishay.com
Vishay Siliconix
PowerPAK® SO-8 Mounting and Thermal Considerations
PowerPAK SO-8 DUAL
The pin arrangement (drain, source, gate pins) and the pin
dimensions of the PowerPAK SO-8 dual are the same as
standard SO-8 dual devices. Therefore, the PowerPAK
device connection pads match directly to those of the SO-8.
As in the single-channel package, the only exception is the
extended drain connection area. Manufacturers can likewise
take immediate advantage of the PowerPAK SO-8 dual
devices by mounting them to existing SO-8 dual land
patterns.
To take the advantage of the dual PowerPAK SO-8’s
thermal performance, the minimum recommended land
pattern can be found in Application Note 826,
Recommended Minimum Pad Patterns With Outline
Drawing Access for Vishay Siliconix MOSFETs. Click on the
PowerPAK 1212-8 dual in the index of this document.
The gap between the two drain pads is 24 mils. This
matches the spacing of the two drain pads on the
PowerPAK SO-8 dual package.
REFLOW SOLDERING
Vishay Siliconix surface-mount packages meet solder reflow
reliability requirements. Devices are subjected to solder
reflow as a test preconditioning and are then
reliability-tested using temperature cycle, bias humidity,
HAST, or pressure pot. The solder reflow temperature profile
used, and the temperatures and time duration, are shown in
figures 3 and 4.
For the lead (Pb)-free solder profile, see
www.vishay.com/doc?73257.
Fig. 3 Solder Reflow Temperature Profile
Ramp-Up Rate+ 3 °C /s max.
Temperature at 150 - 200 °C 120 s max.
Temperature Above 217 °C 60 - 150 s
Maximum Temperature 255 + 5/- 0 °C
Time at Maximum
Temperature
Ramp-Down Rate + 6 °C/s max.
30 s
30 s
260 °C
3 °C(max)6 ° C/s (max.)
150 - 200 °C
Maximum peak temperature at 240 °C is allowed.
Fig. 4 Solder Reflow Temperatures and Time Durations
Revision: 16-Mai-13
APPLICATION NOTE
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
PowerPAK® SO-8 Mounting and Thermal Considerations
THERMAL PERFORMANCE
Introduction
A basic measure of a device’s thermal performance
is the junction-to-case thermal resistance, R
junction-to-foot thermal resistance, R
This parameter is
thJF
measured for the device mounted to an infinite heat sink and
is therefore a characterization of the device only, in other
words, independent of the properties of the object to which
the device is mounted. Table 1 shows a comparison of
the DPAK, PowerPAK SO-8, and standard SO-8. The
PowerPAK has thermal performance equivalent to the
DPAK, while having an order of magnitude better thermal
performance over the SO-8.
TABLE 1 - DPAK AND POWERPAK SO-8
EQUIVALENT STEADY STATE
PERFORMANCE
DPAK
Thermal
Resistance R
1.2 °C/W1 °C/W16 °C/W
thJC
Thermal Performance on Standard SO-8 Pad Pattern
Because of the common footprint, a PowerPAK SO-8
can be mounted on an existing standard SO-8 pad pattern.
The question then arises as to the thermal performance
of the PowerPAK device under these conditions. A
characterization was made comparing a standard SO-8 and
a PowerPAK device on a board with a trough cut out
underneath the PowerPAK drain pad. This configuration
restricted the heat flow to the SO-8 land pads. The results
are shown in figure 5.
PowerPAK
SO-8
, or the
thJC
Standard
SO-8
Application Note AN821
Vishay Siliconix
Because of the presence of the trough, this result suggests
a minimum performance improvement of 10 °C/W by using
a PowerPAK SO-8 in a standard SO-8 PC board mount.
The only concern when mounting a PowerPAK on a
standard SO-8 pad pattern is that there should be no traces
running between the body of the MOSFET. Where the
standard SO-8 body is spaced away from the pc board,
allowing traces to run underneath, the PowerPAK sits
directly on the pc board.
Thermal Performance - Spreading Copper
Designers may add additional copper, spreading copper, to
the drain pad to aid in conducting heat from a device. It is
helpful to have some information about the thermal
performance for a given area of spreading copper.
Figure 6 shows the thermal resistance of a PowerPAK SO-8
device mounted on a 2-in. 2-in., four-layer FR-4 PC board.
The two internal layers and the backside layer are solid
copper. The internal layers were chosen as solid copper to
model the large power and ground planes common in many
applications. The top layer was cut back to a smaller area
and at each step junction-to-ambient thermal resistance
measurements were taken. The results indicate that an area
above 0.3 to 0.4 square inches of spreading copper gives no
additional thermal performance improvement. A
subsequent experiment was run where the copper on the
back-side was reduced, first to 50 % in stripes to mimic
circuit traces, and then totally removed. No significant effect
was observed.
Fig. 5 PowerPAK SO-8 and Standard SO-0 Land Pad Thermal
Revision: 16-Mai-13
APPLICATION NOTE
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
PowerPAK® SO-8 Mounting and Thermal Considerations
SYSTEM AND ELECTRICAL IMPACT OF
PowerPAK SO-8
In any design, one must take into account the change in
MOSFET R
A MOSFET generates internal heat due to the current
passing through the channel. This self-heating raises the
junction temperature of the device above that of the PC
board to which it is mounted, causing increased power
dissipation in the device. A major source of this problem lies
in the large values of the junction-to-foot thermal resistance
of the SO-8 package.
PowerPAK SO-8 minimizes the junction-to-board thermal
resistance to where the MOSFET die temperature is very
close to the temperature of the PC board. Consider two
devices mounted on a PC board heated to 105 °C by other
components on the board (figure 8).
with temperature (figure 7).
DS(on)
Fig. 7 MOSFET R
DS(on)
vs. Temperature
Suppose each device is dissipating 2.7 W. Using the
junction-to-foot thermal resistance characteristics of the
PowerPAK SO-8 and the standard SO-8, the die
temperature is determined to be 107 °C for the PowerPAK
(and for DPAK) and 148 °C for the standard SO-8. This is a
2 °C rise above the board temperature for the PowerPAK
and a 43 °C rise for the standard SO-8. Referring to figure 7,
a 2 °C difference has minimal effect on R
43 °C difference has a significant effect on R
DS(on)
DS(on)
whereas a
.
Minimizing the thermal rise above the board temperature by
using PowerPAK has not only eased the thermal design but
it has allowed the device to run cooler, keep r
DS(on)
low, and
permits the device to handle more current than the same
MOSFET die in the standard SO-8 package.
CONCLUSIONS
PowerPAK SO-8 has been shown to have the same thermal
performance as the DPAK package while having the same
footprint as the standard SO-8 package. The PowerPAK
SO-8 can hold larger die approximately equal in size to the
maximum that the DPAK can accommodate implying no
sacrifice in performance because of package limitations.
Recommended PowerPAK SO-8 land patterns are provided
to aid in PC board layout for designs using this new
package.
Thermal considerations have indicated that significant
advantages can be gained by using PowerPAK SO-8
devices in designs where the PC board was laid out for
the standard SO-8. Applications experimental data gave
thermal performance data showing minimum and
typical thermal performance in a SO-8 environment, plus
information on the optimum thermal performance
obtainable including spreading copper. This further
emphasized the DPAK equivalency.
PowerPAK SO-8 therefore has the desired small size
characteristics of the SO-8 combined with the attractive
thermal characteristics of the DPAK package.
PowerPAK SO-8
107 °C
0.8 °C/W
Fig. 8 Temperature of Devices on a PC Board
Revision: 16-Mai-13
PC Board at 105 °C
APPLICATION NOTE
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of
typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding
statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a
particular product with the properties described in the product specification is suitable for use in a particular application.
Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over
time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk.
Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document
or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.