PD - 97223
IRF6678PbF
IRF6678TRPbF
l RoHs Compliant
DirectFET Power MOSFET
l Lead-Free (Qualified up to 260°C Reflow)
l Application Specific MOSFETs
l Ideal for CPU Core DC-DC Converters
l Low Conduction Losses
Typical values (unless otherwise specified)
VDSS
VGS
RDS(on)
RDS(on)
30V max ±20V max
1.7mΩ@ 10V 2.3mΩ@ 4.5V
Qg tot Qgd
Qgs2
Qrr
Qoss Vgs(th)
l High Cdv/dt Immunity
43nC
15nC
4.0nC
46nC
28nC
1.8V
l Low Profile (<0.7mm)
l Dual Sided Cooling Compatible
l Compatible with existing Surface Mount Techniques
DirectFET ISOMETRIC
MX
Applicable DirectFET Outline and Substrate Outline (see p.7,8 for details)
SQ
SX
ST
MQ
MX
MT
Description
The IRF6678PbF combines the latest HEXFET® Power MOSFET Silicon technology with the advanced DirectFETTM packaging 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 IRF6678PbF balances industry leading on-state resistance while minimizing gate charge along with ultra low package inductance to
reduce both conduction and switching losses. The reduced losses make this product ideal for high frequency/high efficiency DC-DC convert-
ers that power high current loads such as the latest generation of microprocessors. The IRF6678PbF has been optimized for parameters that
are critical in synchronous buck converter’s SyncFET sockets.
Absolute Maximum Ratings
Max.
30
Parameter
Units
V
VDS
Drain-to-Source Voltage
±20
30
V
Gate-to-Source Voltage
GS
Continuous Drain Current, VGS @ 10V
Continuous Drain Current, VGS @ 10V
Continuous Drain Current, VGS @ 10V
Pulsed Drain Current
I
I
I
I
@ TA = 25°C
D
D
D
24
@ TA = 70°C
@ TC = 25°C
A
150
240
210
24
DM
EAS
IAR
Single Pulse Avalanche Energy
Avalanche Current
mJ
A
20
15
10
5
6.0
5.0
4.0
3.0
2.0
1.0
0.0
I = 23A
D
I
= 29A
D
V
= 24V
= 15V
DS
V
DS
T
= 125°C
J
T
3
= 25°C
J
0
0
1
2
4
5
6
7
8
9
10
0
10
20
30
40
50
60
Q
Total Gate Charge (nC)
G
V
Gate -to -Source Voltage (V)
GS,
Fig 1. Typical On-Resistance vs. Gate Voltage
Fig 2. Typical On-Resistance vs. Gate 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 = 0.75mH, 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
06/15/06