LT1952 데이터 시트보기 (PDF) - Linear Technology
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LT1952 Datasheet PDF : 28 Pages
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LT1952/LT1952-1
TYPICAL APPLICATIONS
Wide 18V to 72V Input, High Efficiency, 12V at 12A Output, Active Reset Forward Converter Fits in One-Eighth Brick Footprint
+VIN R1 +VB
2.2Ω
+VIN
VUL
Q10
PBSS8110
L2
1.5mH
D5
18V TO 72V
CIN
2.2µF
R11
47k
PDZ10B
×3
+VR2
–VIN
D2
BAS516
1•
D3
BAS516 6
• 7, 8
9, 10, 11
+VIN 2, 3 •
FG
Q2
HAT2266
CG
L1
HR-PQA2050-10
Q3
HAT2173
+VOL
COL
33µF +
X7R
+VOUT
CSYS
220µF 16V
APXE
R5
10Ω
VUL
C3
1µF
C21
220pF
1
6
VCC BOOST
2 LTC4440-5 5
GND
TG
3
INP
R3 442Ω
D1 BAS516
4
TS
RCSL
0.006Ω
OUT
L53
10µH
R13 R14
22k 33k 1
16
VFB
COMP
SOUT
2
15
Q12
FB
VIN
BC856T
R15 115k 3
ROSC
14
OUT
C13 0.47µF
4
LT1952-1
13
SYNC
PGND
5
12
SS_MAXDC DELAY
D17 BAS516
VUL
C8
100pF
C10
100pF
CUL
4.7µF
C9
100pF R20 115k
6
VREF
11
OC
4, 5
C25
10nF
Q1
HAT2173
R54
4.7Ω
C34
0.22µF
C33
0.1µF
Q13
Si2325
R45 10k
D14
BAS516
T1
R8
G45R2-0405.005 2.2Ω
L3
680µH
D7
BAS521 R16
D6
BAS521
33k
R18
10k
1
LTC3900
CS+ SYNC
8
PE-68386
•
C5
0.22µF Q9
BCX55
R21
2 CS– TIMER 7
3
6
R17
560Ω
10k
CG
4
CG
GND
5
C12 •
VCC
FB FB 470pF
R10
C14
1k
1µF
VUL
D9
PDZ10B
R19 47.5k
D11
BAS516
220pF 10µH
OUT
R26
220Ω PS2801-1
VFB
C23
R30
1µF
1.2k
R31
10Ω
C16
0.22µF
10V
1 LT4430 6
VCC OPTO
2
5
GND COMP
3
SS
4
FB
C19
1µF X5R
R27
470Ω
C17
15nF
R38
18.2k
+VOL
R34
12.1k
R35
348k
C10 0.1µF
R22
13.3k
7
SD_VSEC
8
GND
10
ISENSE
9
BLANK
R23 2k
R24 68k
C15
2.2nF 2kV
1952 TA02a
C24
22pF
R28 R32
309k 187k R2 560k
D29
PMEG3002
+VB +VR2
The 12V Output Converter Fits in a One-Eighth “Brick” Footprint and Has a
Very High Efficiency Over 18V to 72V Input Voltage Range
96
95 24V INPUT
94
93
92
48V INPUT
91
90
89
88
87
86
85
84
02
4
6
8
IOUT (A)
10 12
1952 TA02b
19521fe
25
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