IRF6637PBF Datasheet, PDF (1/10 Pages) International Rectifier – DirectFET

Power MOSFET

PD - 97088
IRF6637PbF
l RoHS Compliant 
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 and Switching Losses
l Low Profile (<0.7mm)
l Dual Sided Cooling Compatible 
l Compatible with existing Surface Mount Techniques 
IRF6637TRPbF
DirectFET™ Power MOSFET ‚
Typical values (unless otherwise specified)
V_DSS
V_GS
R_DS(on)
R_DS(on)
30V max ±20V max 5.7mΩ@ 10V 8.2mΩ@ 4.5V
Q_{g tot} Q_gd
Q_gs2
Q_rr
Q_oss V_gs(th)
11nC 4.0nC 1.0nC 20nC 9.9nC 1.8V
MP
DirectFET™ ISOMETRIC
Applicable DirectFET Outline and Substrate Outline (see p.7,8 for details)
SQ
SX
ST
MQ
MX
MT
MP
Description
The IRF6637PbF combines the latest HEXFET® power MOSFET silicon technology with advanced DirectFET^TM 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 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 power systems, improving previous best thermal resistance by 80%.
The IRF6637PbF balances both low resistance and low charge along with ultra low package inductance to reduce both conduction and
switching losses. The reduced total losses make this product ideal for high efficiency DC-DC converters that power the latest generation of
processors operating at higher frequencies. The IRF6637PbF has been optimized for parameters that are critical in synchronous buck
operating from 12 volt bus converters including R_DS(on) and gate charge to minimize losses in the control FET socket.
Absolute Maximum Ratings
Parameter
Max.
Units
V_DS
Drain-to-Source Voltage
30
V
V_GS
I_D @ T_A = 25°C
I_D @ T_A = 70°C
I_D @ T_C = 25°C
I_DM
E_AS
I_AR
Gate-to-Source Voltage
e Continuous Drain Current, V_GS @ 10V
e Continuous Drain Current, V_GS @ 10V
f Continuous Drain Current, V_GS @ 10V
g Pulsed Drain Current
h Single Pulse Avalanche Energy
Ãg Avalanche Current
±20
14
11
A
59
110
31
mJ
11
A
25
12
ID = 14A
ID= 11A
VDS= 24V
20
10
VDS= 15V
8
15
TJ = 125°C
10
TJ = 25°C
5
2.0
4.0
6.0
8.0
10.0
VGS, Gate-to-Source Voltage (V)
Notes:
Fig 1. Typical On-Resistance Vs. Gate Voltage
 Click on this section to link to the appropriate technical paper.
‚ Click on this section to link to the DirectFET Website.
ƒ Surface mounted on 1 in. square Cu board, steady state.
www.irf.com
6
4
2
0
0
4
8 12 16 20 24
QG Total Gate Charge (nC)
Fig 2. Typical Total Gate Charge vs Gate-to-Source Voltage
„ T_C measured with thermocouple mounted to top (Drain) of part.
… Repetitive rating; pulse width limited by max. junction temperature.
† Starting T_J = 25°C, L = 0.52mH, R_G = 25Ω, I_AS = 11A.
1
5/5/06