Datasheet

LTC3766
53
3766fa
For more information www.linear.com/LTC3766
Typical applicaTions
9V-36V to 24V/4.2A Active Clamp Isolated Forward Converter
SGND PGND
GND PGND
LTC3766
SW SG
I
S
–
I
S
+
RUN
1nF
220pF
68pF
1µF
D1
+V
IN
–V
IN
33nF
27.4k
100Ω
14.3k
147k
28.7k
100µF 35V: SUNCON 35HVH100M
D1-D2: ZHCS506
D3-D6: BAS21
L1: VISHAY IHLP2525CZERR47M01
L2: PULSE PA2729.583
L3: COOPER SD25-681
Q1: BSC057N08NS3
Q2: Si7430DP
Q3: BSC320N20NS3G
T1: PULSE PA0806.004NL
T2: PULSE PA0510NL
T3: ICE CT102-100 (1:100)
SSFLT
15k
60.4k
7.5k
274Ω
81.6k
15k
16.9k
2.94k
3766 TA03a
10.7k
RCORE FS/UV
6.19k
10k
Si7309DN
Q1
1µF
100V
10µF
50V
×3
10µF
50V
0.33Ω
1/8W
3.65Ω
DELAY IN
–
V
CC
PT
+
FB
REGSD MODE
SS I
S
–
PT
–
FGD
SGD
FS/SYNC
I
PK
ITH V
SEC
PHASE
V
S
–
V
S
+
RUN
IN
+
NDRV
2N7002
AG
PG
100Ω
ES1PD
100Ω
100Ω
4mΩ
1W
15Ω
1/8W
150pF
250V
24Ω
1W
220nF
100V
T1T3
D3
I
S
+
+V
IN
9V TO 36V
1.2k
1/8W
L1
0.47µH
8T
4T
D4
D5
Q2
Q3
+V
OUT
24V
4.2A
+V
OUT
–V
OUT
+V
OUT
2T
ISMAG
+V
IN
2.2nF
250VAC
3.3nF
0.1µF
T2
2.5:2
1nF
D2
1µF
0.1µF
3.3nF
I
S
+
I
S
+
V
CC
V
AUX
NDRV
FG V
IN
4.7µF
2.2µF
L3
680µH
33nF NPO
2.2nF
LTC3765
0.1µF
100k
1nF
100µF
35V
•
•
•
•
•
••
L2
58µH
10µF
50V
D6
7.5k
1/2W
2.8k
1/8W
+
FCX491A