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ISL6609_06 Datasheet, PDF (9/11 Pages) Intersil Corporation – Synchronous Rectified MOSFET Driver | |||
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ISL6609, ISL6609A
Therefore, the actual coupling effect should be examined
using a very high impedance (10M⦠or greater) probe to
ensure a safe design margin.

---------â----V----D-----S-----------
V G S _MILLER
=
d----V---
dt
â
R
â
Crs


s
1
â
e
d----V---
dt
â
R
â
Ci

s s



ï£

(EQ. 5)
R = RUGPH + RGI
Crss = CGD
Ciss = CGD + CGS
VCC
DU
DL
BOOT
CBOOT
UGATE G
PHASE
CGD
VIN
D
CDS
RGI
CGS
S
QUPPER
FIGURE 5. GATE TO SOURCE RESISTOR TO REDUCE
UPPER MOSFET MILLER COUPLING
9
FN9221.1
March 6, 2006
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