DN344 フライバック・コントローラによる複数出力

Tom Hack
®
+
D1
1N4148W
L1
3.3µH
VIN
25V TO 60V
C1
10µF
63V
C2
220nF
R3
232k
T1
XFMR EFD20
C3
2.2µF
100V
R4
47k
D2
1A 60V
B260A
12
11
R1
(OPT)
VOUT1
12V
400mA
C4
10µF
FB
7
VOUT2
5V
400mA
6
R2
(OPT)
10
8
1
2
C5
47µF
FB
9
4
+
5
3
C6
470µF
4V POSCAP
VOUT3
3.3V
3A
C7
100µF
Q1
Si4490
LTC3806
12
RUN SENSE
C12
11
220nF
ITH
NC
10
3
SS
FB
9
4
G1
NC
8
5
G2
VIN
6
INTVCC
GND
1
R6
12.4k
+
20V
2
R7
33k
C13
100µF
35V
TANT
C9 C8
100pF 1nF
C14
220nF
C15
4.7µF
10V
+
R8
0.033Ω
Q2
Si7806DN
Q3
Si7806DN
C10
470µF
4V POSCAP
VOUT4
2.5V
2A
R5
(OPT)
C11
100µF
FB
Q4
Si7806DN
13
R10
20.5k
DN344 F01
FB
R9
12.4k
08/04/344
EFFICIENCY (%)
90
85
80
OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4
Synchronous
Nonsynchronous
7.86%
6.31%
1.39%
9.47%
8.88%
(20%-100%
of IMAX)
6.42%
2.43%
10.32%
(20%-100%
of IMAX)
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
Swept*
0.87%
(2.02%)
0.22%
(0.42%)
0.29%
(0.43%)
0.31%
(0.94%)
Swept
0.16%
(0.23%)
0.17%
(0.30%)
–5.49%
(–8.52%)
–4.88%
(–8.20%)
Swept
–4.43%
(–8.61%)
–0.63%
(–0.36%)
–0.12%
(0.13%)
0.16%
(0.39%)
Swept*
75
10
20 30 40 50 60 70 80 90 100
% OF MAXIMUM OUTPUT POWER
DN344 F02
*
dn344f 0804 5.2K • PRINTED IN THE JAPAN
 LINEAR TECHNOLOGY CORPORATION 2004