LTC3738 Linear Technology, LTC3738 Datasheet - Page 30

• Manufacturer Part Number: LTC3738
• Description: 3-Phase Buck Controller
• Manufacturer: Linear Technology

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TYPICAL APPLICATIO
LTC3738
30
S1
S1
S2
S2
S3
S3
100Ω
R
30pF
+
–
+
–
–
+
AVP
10Ω ×6
V
V
SWITCHING FREQUENCY: 300kHz
IN
OUT
100pF
R
: 7V TO 21V
PREAVP
: 0.8V TO 1.55V, 65A
10k
51k
220Ω
1000pF
1000pF
1000pF
V
CC
0.1µF
100pF
FCB/SYNC
PLLFLTR
IN
IN
AVP
EAIN
SENSE1
SENSE1
SENSE2
SENSE2
SENSE3
SENSE3
ON/0FF
OUTEN VID2
–
+
SS
+
–
+
–
–
+
VID2 IN
I
TH
2.2k
(EXPOSED PAD IS SGND)
VID1 IN
TSNS
2200pF
V
VID1
C
C
D1 TO D3: MBRS340T3
CC
IN
OUT
: SANYO OS-CON 25SP68M
U
VR_HOTB
: 330µF/2.5V ×10 SANYO POSCAP 2R5TPE330M9
LTC3738
VID0 IN
VID0
V
CC
Block Diagram—6-Phase LTC3731/LTC3738 Supply
200Ω
PGOOD
VID5 IN
V
VID5
IN
VID3 IN
VID3
VID4 IN
PGOOD
VID4
65A Power Supply for VRM10
47k
BOOST1
BOOST3
BOOST2
CLK
60°
PGND
SW1
SW2
SW3
BG1
BG2
BG3
TG1
TG2
TG3
V
CLKOUT
FCB/SYNC
CC
3-PHASE LTC3731
3-PHASE LTC3738
1Ω
V
CC
1µF
0.1µF
0.1µF
0.1µF
L1 TO L3: 0.6µH PULSE PG0006.601 OR TOKO FDA1055 0.56µH
M1, M3, M5: Si7390DP ×1 OR HAT2168H ×1
M2, M4, M6: Si7356DP ×2 OR HAT2165H ×2
V
5V
CC
10µF
V
CC
3738 TA03
M1
M2
M3
M4
M5
M6
V
VRM9/VRM10
90A TO 120A
OUT
V
V
V
IN
IN
IN
D1
D2
D3
L1
L2
L3
S1
S2
S3
+
+
+
0.002Ω
0.002Ω
0.002Ω
S1
S2
S3
–
–
–
3738 TA02
10µF
6.3V
×3
10µF
35V
×5
V
OUT
+
+
C
C
68µF
25V
OUT
IN
V
7V TO 21V
IN
3738f