Analog Devices Linear LTM 4700 User Manual page 75

TYPICAL APPLICATIONS
22µF
V U1
DD33
V
5.75V TO 16V
IN
+
IN
–
IN
150µF
22µF
×4
V
IN1
V U1
DD33
V
IN0
SV
IN
10k 4.99k 10k 10k
RUN1
RUN
RUN0
FAULTS
FAULT0
FAULT1
SYNC
SYNC
SHARE CLK
SHARECLK
WP
COMPa
2200pF
V
IN
+
IN
22µF
–
×4 IN
VI
N1
V
IN0
SV
IN
RUN1
RUN0
FAULTS
FAULT0
FAULT1
SYNC
SYNC
SHARE CLK
SHARE_CLK
WP
*OPTIONAL +5V TOTAL ≥ 200mA,
BIAS
IMPROVES EFFICIENCY AND THERMALS
COMPa
Figure 50. 8-Phase Operation with Four LTM4700 Producing 1V at 400A. Power System Management Features Accessible Through
2
LTM4700 Over 2-Wire I C/SMBus/PMBus Serial Interface
4.99k
2.2µF
PGOOD
U1
SW0
V
OUT0
V
OSNS0
V
OSNS0
SW1
V
OUT1
V
LTM4700 OSNS1
V
OSNS1
SCL
SDA
ALERT
GND
SGND
COMPb
22.6k
120pF
1.21k
2
I C/SMBus I/F WITH PMBus COMMAND
22µF
2.2µF SET TO/FROM IPMI OR OTHER BOARD
PGOOD
MANAGEMENT CONTROLLER
U2
V
V
OSNS0
V
OSNS0
V
V
OSNS1
LTM4700
V
OSNS1
ALERT
SGND
1.65k
1.21k
COMPb
For more information
U3
SW0
V
OUT0
+ 470µF
V
100µF
OSNS0
×4
×8
–
V
OSNS0
SW1
V
OUT1
100µF
+
470µF V
OSNS1
×8
×4
–
V
OSNS1
SCL SCL
SCL
SDA SDA
SDA
ALERT ALERT
ALERT
10k 10k 10k
GND
SGND
V U1
DD33
1.65k
CONFIG RESISTORS ARE
TO BE 1%, 50PPM
SW0
SW0
V
OUT0
+
100µF 470µF V
×8 ×4
–
V
SW1
SW1
V
OUT1
+
100µF
V
470µF
×8
×4
V
–
SCL
SCL
SCL
1V AT
SCL
SDA
400A
SDA SDA
SDA
ALERT
ALERT ALERT
GND
GND
SGND
0
CONFIG RESISTORS ARE
TO BE 1%, 50PPM
www.analog.com
LTM4700
2.2µF
PGOOD
+
–
+
LTM4700
–
SHARECLK
787Ω 2.43k
1.21k
COMPa COMPb
2.2µF
PGOOD
U4
OUT0
+
OSNS0
–
OSNS0
OUT1
+
OSNS1
LTM4700
–
OSNS1
2.43k 3.24k
1.21k COMPa COMPb
22µF
V
IN
+
IN
22µF
×4
–
IN
V
IN1
V
IN0
SV
IN
RUN1
RUN
RUN0
FAULT0
FAULT1 FAULTS
SYNC
SYNC
SHARE_CLK
WP
22µF
V
IN
+
IN
22µF
×4
–
IN
V
IN1
V
IN0
SV
IN
RUN1
RUN
RUN0
FAULT0
FAULT1 FAULTS
SYNC
SYNC
SHARE_CLK
SHARECLK
WP
4700 F50
Rev. B
75