PD - 97232A
IRF6668PbF
IRF6668TRPbF
DirectFET Power MOSFET
l RoHs Compliant
Typical values (unless otherwise specified)
l Lead-Free (Qualified up to 260°C Reflow)
l Application Specific MOSFETs
RDS(on)
VDSS
VGS
12mΩ@ 10V
l Ideal for High Performance Isolated Converter
Primary Switch Socket
l Optimized for Synchronous Rectification
80V max ±20V max
Qg tot Qgd
Qgs2
Qrr
Qoss Vgs(th)
22nC
7.8nC 1.6nC
40nC
12nC
4.0V
l Low Conduction Losses
l High Cdv/dt Immunity
l Low Profile (<0.7mm)
l Dual Sided Cooling Compatible
l Compatible with existing Surface Mount Techniques
DirectFET ISOMETRIC
MZ
Applicable DirectFET Outline and Substrate Outline (see p.7,8 for details)
SQ
SX
ST
MQ
MX
MT
MZ
Description
The IRF6668PbF combines the latest HEXFET® Power MOSFET Silicon technology with the advanced DirectFETTM packag-
ing to achieve the lowest on-state resistance in a package that has the footprint of a SO-8 and only 0.7 mm profile. The
DirectFET package is compatible with existing layout geometries used in power applications, PCB assembly equipment and
vapor phase, infra-red or convection soldering techniques. Application note AN-1035 is followed regarding the manufacturing
methods and processes. The DirectFET package allows dual sided cooling to maximize thermal transfer in power systems,
improving previous best thermal resistance by 80%.
The IRF6668PbF is optimized for primary side bridge topologies in isolated DC-DC applications, for 48V(±10%) or 36V-60V
ETSI input voltage range systems. The IRF6668PbF is also ideal for secondary side synchronous rectification in regulated
isolated DC-DC topologies. The reduced total losses in the device coupled with the high level of thermal performance enables
high efficiency and low temperatures, which are key for system reliability improvements, and makes this device ideal for high
performance isolated DC-DC converters.
Absolute Maximum Ratings
Max.
80
Parameter
Units
V
VDS
Drain-to-Source Voltage
±20
55
V
Gate-to-Source Voltage
GS
Continuous Drain Current, VGS @ 10V
Continuous Drain Current, VGS @ 10V
Pulsed Drain Current
I
I
I
@ TC = 25°C
D
D
44
@ TC = 70°C
A
170
24
DM
EAS
IAR
Single Pulse Avalanche Energy
Avalanche Current
mJ
A
23
60
50
40
30
20
10
0
12.0
10.0
8.0
I
= 12A
I = 12A
D
D
V
= 64V
= 40V
DS
V
DS
6.0
T
= 125°C
J
4.0
2.0
T
= 25°C
8
J
0.0
4
6
10
12
14
16
0
2
4
6
8
10 12 14 16 18 20 22 24
Q , Total Gate Charge (nC)
G
V
Gate -to -Source Voltage (V)
GS,
Fig 1. Typical On-Resistance vs. Gate-to-Source Voltage
Fig 2. Total Gate Charge vs. Gate-to-Source Voltage
Notes:
TC measured with thermocouple mounted to top (Drain) of part.
ꢀ Repetitive rating; pulse width limited by max. junction temperature.
Starting TJ = 25°C, L = 0.088mH, RG = 25Ω, IAS = 23A.
Click on this section to link to the appropriate technical paper.
Click on this section to link to the DirectFET Website.
Surface mounted on 1 in. square Cu board, steady state.
www.irf.com
1
08/28/06