PD - 97537
AUIRF7647S2TR
AUIRF7647S2TR1
DirectFET Power MOSFET
AUTOMOTIVE GRADE
• Advanced Process Technology
V(BR)DSS
100V
• Optimized for Class D Audio Amplifier Applications
• Low Rds(on) for Improved Efficiency
• Low Qg for Better THD and Improved Efficiency
• Low Qrr for Better THD and Lower EMI
• Low Parasitic Inductance for Reduced Ringing and Lower EMI
• Delivers up to 100W per Channel into 8Ω with No Heatsink
• Dual Sided Cooling
RDS(on) typ.
26m
31m
Ω
Ω
max.
RG (typical)
Qg (typical)
1.6
Ω
14nC
• 175°C Operating Temperature
S
• Repetitive Avalanche Capability for Robustness and Reliability
• Lead free, RoHS and Halogen free
D
D
G
S
DirectFET ISOMETRIC
SC
Applicable DirectFET Outline and Substrate Outline
SB
SC
M2
M4
L4
L6
L8
Description
The AUIRF7647S2TR/TR1 combines the latest Automotive HEXFET® Power MOSFET Silicon technology with the advanced DirectFET
packaging platform to produce a best in class part for Automotive Class D audio amplifier applications. The DirectFET package is compatible with
existing layout geometries used in power applications, PCB assembly equipment and vapor phase, infra-red or convection soldering tech-
niques, when application note AN-1035 is followed regarding the manufacturing methods and processes. The DirectFET package allows dual
sided cooling to maximize thermal transfer in automotive power systems.
This HEXFET Power MOSFET optimizes gate charge, body diode reverse recovery and internal gate resistance to improve key Class D audio
amplifier performance factors such as efficiency, THD and EMI. Moreover the DirectFET packaging platform offers low parasitic inductance
and resistance when compared to conventional wire bonded SOIC packages which improves EMI performance by reducing the voltage
ringing that accompanies current transients. These features combine to make this MOSFET a highly desirable component in Automotive
Class D audio amplifier systems.
Absolute Maximum Ratings
Parameter
Drain-to-Source Voltage
Max.
100
Units
VDS
VGS
V
Gate-to-Source Voltage
± 20
(Silicon Limited)
(Silicon Limited)
(Silicon Limited)
Continuous Drain Current, VGS @ 10V
Continuous Drain Current, VGS @ 10V
Continuous Drain Current, VGS @ 10V
Pulsed Drain Current
I
@ TC = 25°C
24
17
D
D
D
I
I
I
@ TC = 100°C
@ TA = 25°C
A
5.9
95
DM
Power Dissipation
P
P
EAS
@TC = 25°C
@TA = 25°C
41
D
D
W
Power Dissipation
2.5
45
67
Single Pulse Avalanche Energy (Thermally Limited)
Single Pulse Avalanche Energy (Tested Value)
Avalanche Current
mJ
EAS(tested)
IAR
A
See Fig. 18a,18b,16,17
EAR
Repetitive Avalanche Energy
mJ
T
P
270
Peak Soldering Temperature
T
J
Operating Junction and
-55 to + 175
°C
T
Storage Temperature Range
STG
Thermal Resistance
Parameter
Typ.
Max.
Units
°C/W
RθJA
Junction-to-Ambient
Junction-to-Ambient
Junction-to-Ambient
Junction-to-Can
–––
12.5
20
60
RθJA
–––
–––
3.7
RθJA
RθJ-Can
RθJ-PCB
–––
1.4
Junction-to-PCB Mounted
Linear Derating Factor
–––
0.27
W/°C
HEXFET® is a registered trademark of International Rectifier.
www.irf.com
1
07/13/2010