LTC1706-63
U
TYPICAL APPLICATION
VID Controlled High Current 70A 4-Phase Application
OPTIONAL SYNC
CLOCK IN
L1
1
2
3
4
5
6
7
8
9
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RUN/SS
SENSE1
SENSE1
EAIN
CLKOUT
TG1
5V
+
–
0.003Ω
0.33µF
SW1
1000pF
0.47µF
D1
M1
BOOST1
MBRS
340T3
10Ω
5
PLLFLTR
PLLIN
V
M2
M3
IN
V
CC
1µF
1
2
3
4
7
0.33µF
BG1
VID0
VID1
VID2
VID3
VID4
6
150µF, 16V
× 2
1µF
25V
PHASMD
SENSE
EXTV
CC
47k
D7
D8
+
V
OUT
6800pF
LTC1629-6
22µF
6.3V
I
+
C
1.025V TO
1.4125V
70A
TH
SGND
INTV
CC
OUT
FROM
µP
470µF, 6.3V
+
GND
LTC1706-63
100pF
V
PGND
BG2
× 3
10
11
12
13
14
DIFFOUT
V
V
V
DIFFOUT
–
V
V
OS
OS
–
D2
MBRS
340T3
M4
OS
BOOST2
SW2
100pF
+
0.47µF
FB
+
10
OS
M5
GND
9
M6
1000pF
–
SENSE2
SENSE2
TG2
0.003Ω
+
AMPMD
L2
24k
75k
L3
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RUN/SS
CLKOUT
TG1
5V
0.003Ω
+
SENSE1
SENSE1
EAIN
1000pF
10k
3
–
SW1
47pF
D3
MBRS
340T3
4
0.47µF
BOOST1
M7
10Ω
5
PLLFLTR
PLLIN
V
M9
IN
M8
0.01µF
1µF
6
C
BG1
OUT
150µF, 16V
× 2
470µF, 6.3V
× 3
7
PHASMD
EXTV
CC
1µF
25V
D9
47pF
8
LTC1629-6
22µF
6.3V
I
INTV
CC
+
TH
+
+
9
D10
GND
SGND
PGND
BG2
V
IN
12V
10
11
12
13
14
V
DIFFOUT
V
V
V
DIFFOUT
–
–
V
V
D4
MBRS
340T3
OS
OS
BOOST2
SW2
M10
OS
0.47µF
+
+
M12
M11
OS
–
SENSE2
SENSE2
TG2
1000pF
0.003Ω
M1 TO M12: FDS7760A
+
AMPMD
L1 TO L4: 1µH SUMIDA CEPH149-IROMC
D7 TO D10: CENTROI CMDSH-3TR
L4
C
f
: KEMET T510X477M006AS
OUT
: 200kHz
1706-63 TA04
SW
RELATED PARTS
PART NUMBER
LTC1629-6
LTC3714
DESCRIPTION
PolyPhase® Synchronous Step-Down Controller
Single Phase Synchronous Step-Down Controller with VID 0.6V ≤ V
COMMENTS
Up to 12-Phase Operation, Up to 200A Power Supply
≤ 1.75V, I
≤ 1.75V, I
≤ 25A
≤ 40A
OUT
OUT
OUT
LTC3716
2-Phase Synchronous Step-Down Controller with VID
3-Phase, 60A Synchronous Step-Down Controller
0.6V ≤ V
OUT
LTC3731
Single IC 60A Solution with Onboard MOSFET Drivers, ±5% Output
Current Matching for Optimum Thermal Performance and Reliability
On-Board VID and MOSFET Drivers, 0.8V ≤ V ≤ 1.55V, I ≤ 60A
LTC3733
LTC3778
LTC3819
3-Phase, 60A Synchronous Step-Down Controller for
AMD Opteron Processors
OUT
OUT
Optional R
DC/DC Synchronous Controller
Current Mode Operation with R
or MOSFET R
Sensing,
DC(0N)
SENSE
SENSE
4.5V ≤ V ≤ 36V
IN
2-Phase Synchronous Step-Down Controller
1.025V ≤ V
≤ 1.4125V; 40A
OUT
PolyPhase is a registered trademark of Linear Technology Corporation.
170663f
LT 1005 • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
8
●
●
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2005
Linear Systems [ Linear Systems ]
