74
Rev. B
For more information
TYPICAL APPLICATIONS
0Ω
• U1: SLAVE ADDRESS = 1000000_R/W (0X40)
• U2: SLAVE ADDRESS = 1000001_R/W (0X41)
• 350kHz SWITCHING FREQUENCY WITH INTERLEAVING
• NO GUI CONFIGURATION AND NO PART-
SPECIFIC PROGRAMMING REQUIRED EXCEPT:
VIN_OFF < VIN_UV_WARN_LIMIT, VIN_ON <4.3V
• IN MULTI-MODULE SYSTEMS, CONFIGURING
RAIL_ADDRESS IS RECOMMENDED
PGOOD
COMPb
COMPa
COMPa
COMPb
SCL
SCL
SDA
SDA
ALERT
ALERT
22µF
×4
100µF
×4
100µF
×4
×2
470µF
×2
470µF
100pF
150µF
10k
10k
10k
V
OSNS0
+
V
OSNS0
–
FAULT0
FAULT1
V
DD33
WP
SYNC
V
IN0
V
OUT0
SCL
SDA
RUN0
RUN1
SW0
SW1
COMP1a
COMP1b
COMP0a
V
IN1
COMP0b
VTRIM1_CFG
V
OSNS1
+
VTRIM0_CFG
VOUT0_CFG
V
OUT1
ALERT
SHARE_CLK
VOUT1_CFG
GND
SV
IN
V
OSNS1
–
SGND
FSWPH_CFG
ASEL
IN
+
IN
–
LTM4680
22µF
×4
100µF
×4
100µF
×4
×2
470µF
×2
470µF
2.2µF
PGOOD
V
OSNS0
+
V
OSNS0
–
FAULT0
FAULT1
V
DD33
V
DD25
WP
SYNC
V
IN0
INT
V
CC
V
OUT0
SCL
SDA
RUN0
RUN1
EXT
V
CC
SW0
SW1
COMP1a
COMP1b
PGOOD0
PGOOD1
COMP0a
V
IN1
COMP0b
VTRIM1_CFG
V
OSNS1
+
VTRIM0_CFG
VOUT0_CFG
V
OUT1
ALERT
SHARE_CLK
VOUT1_CFG
GND
SV
IN
V
OSNS1
–
TSNS0a
TSNS0b
SGND
TSNS1a
TSNS1b
FSWPH_CFG
ASEL
IN
+
IN
–
LTM4680
4.99k
4.99k
10k
10k
10k
22.6k
1.21k
22.6k
1.21k
I
2
C/SMBus I/F WITH PMBus COMMAND
SET TO/FROM IPMI OR OTHER BOARD
MANAGEMENT CONTROLLER
5.75V TO 16V
ON/OFF CONTROL
FAULT INTERRUPTS
CONFIG RESISTORS ARE
TO BE 1%, 50PPM
CONFIG RESISTORS ARE
TO BE 1%, 50PPM
SYNC CLOCK
SHARE CLOCK
1V AT 120A
V
DD33
U1
U1
V
DD33
U1
V
DD33
U1
U2
V
DD33
U2
V
IN
V
IN
2200pF
*OP5V
BIAS
TOTAL ≥ 100mA,
IMPROVES EFFICIENCY AND THERMALS
+5V
BIAS
*
LOAD1
4680 F47
2.2µF
+5V
BIAS
*
V
DD25
INT
V
CC
EXT
V
CC
PGOOD0
PGOOD1
TSNS0a
TSNS0b
TSNS1a
TSNS1b
Figure 47. Two Paralleled LTM4680 Producing 1V
OUT
at 120A. Integrated Power System Management
Features Accessible Over 2-Wire I
2
C/SMBus/PMBus Serial Interface
