ISL6609A Intersil Corporation, ISL6609A Datasheet - Page 9

• Manufacturer Part Number: ISL6609A
• Description: Synchronous Rectified MOSFET Driver
• Manufacturer: Intersil Corporation

Therefore, the actual coupling effect should be examined
using a very high impedance (10MΩ or greater) probe to
ensure a safe design margin.
V
R
GS_MILLER
FIGURE 5. GATE TO SOURCE RESISTOR TO REDUCE
=
VCC
R
UGPH
=
UPPER MOSFET MILLER COUPLING
+
DU
DL
R
dV
------- R C
dt
GI
⋅
⋅
C
BOOT
PHASE
UGATE
rss
rss
C






BOOT
1 e
=
–
9
C
--------------------------------- -
dV
------ - R C
GD
dt
G
–
⋅
V
DS
R
⋅
C
GI
GD
iss
C
C






iss
GS
S
=
VIN
C
Q
GD
UPPER
D
ISL6609, ISL6609A
(EQ. 5)
+
C
C
DS
GS
March 6, 2006
FN9221.1