Chien-Ming Wang
1
, Jiann-Jong Chen
2
, Dong-Shiuh Wu
1
1
Dep. Of Electronic Eng., Lunghwa University of Science and Technology
2
Dep. Of Electronic Eng., National Taipei University of Technology
!" #
! "
" # $%& ’()*’+, "
"
" -./(0 ’1 ’
" " ’()*’+, "
" " ./( ’1
/ "
"
$" % &’
( )&’# 1 "
./(
’1 )12342
"
$5 56& "
"
"
%
" %5Ω
"
" "
" " "
" $67& 56 "
8 9 65Ω 7 :5Ω
RTN
Rq 10
U1 UC3843
2 3
4
8
1
6
7
5
VFB ISEN
RT/CT
VREF
COMP
OUT
VCC
GND
Vin
D
SR560
Rf
2.47K
RS
0.1
Ra
50K
Ct
4.7n
Vout L 50u
Rt
7.5K
RTN
CO
100u
Rb
10K
C2
1n
Cf
0.088u
C1
0.1u
R1 1K
M1
1010E
; < # "
)12342