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LTC3855 Datasheet(PDF) 39 Page - Linear Technology

Part # LTC3855
Description  Dual, Multiphase Synchronous DC/DC Controller with Differential Remote Sense
PDF  44 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3855 Datasheet(HTML) 39 Page - Linear Technology

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LTC3855

3855f
Typical applicaTions
Figure 23. Triple Phase 1V, 50A Supply with Auxillary 3.3V, 5A Rail, fSW = 400kHz
TG1
BOOST1
PGND1
BG1
VIN
INTVCC
EXTVCC
BG2
PGND2
BOOST2
TK/SS1
ITH1
VFB1
SGND
VFB2
ITH2
TK/SS2
SENSE2+
SENSE2–
DIFFP
13.3k
1nF
20k
PGOOD1V
2k
100
100k
RUN1
RUN1
RUN2
100
100k
2.2
4.7µF
0.1µF
0.1µF
LTC3855
10µF
3
270µF
16V
330pF
4700pF
1nF
CMDSH-3
M4
RJK0330DPB
M3
RJK0305DPB
M2
RJK0330DPB
M1
RJK0305DPB
CMDSH-3
1µF
L1
0.3µH
L2
0.3µH
0.002
1%
0.002
1%
VIN
4.5V TO
14V
VOUT1
1V
50A
+
COUT1
100µF
6.3V
3
COUT2
470µF
2.5V
4
+
100
100
0.1µF
L1, L2, L3: VITEC 59PR9874
L4: WURTH 744311220
COUT1, COUT3: TDK C3225X5R0J107M
COUT2: KEMET T530D477M2R5ATE006
3855 F23
TG1
BOOST1
PGND1
BG1
VIN
INTVCC
EXTVCC
BG2
PGND2
BOOST2
TK/SS1
ITH1
VFB1
SGND
VFB2
ITH2
TK/SS2
SENSE2+
SENSE2–
DIFFP
90.9k
0.1µF
20k
PGOOD3.3V
10k
100
RUN1
100k
100
100k
2.2
4.7µF
0.1µF
0.1µF
LTC3855
100pF
0.1µF
3300pF
1nF
CMDSH-3
M7
S4816BDY
M6
RJK0330DPB
M5
RJK0305DPB
CMDSH-3
1µF
L3
0.3µH
0.002
1%
VOUT2
3.3V
5A
COUT3
100µF
6.3V
L4
2.2µH
4.99k
2.49k
10µF



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