ISL8273M Datasheet, PDF (8/55 Pages) Intersil Corporation – 80A Single Channel Digital PMBus Step-Down Power Module

ISL8273M
Typical Application Circuit - Three Module Current Sharing
VAUX OR VCC 3.3V TO 5V
SMBus Address= 0x2A
SHOULD BE ACTIVE BEFORE ENABLE 4.7k: 4.7k: 4.7k: 4.7k:
51.1k:
R7
R1
R2 R3 R4
DDC
SCL
SDA
SALRT
2x470µF
VIN BULK
12V
C1
SYNC
4x47μF
CERAMIC
C2
C3
10µF
10µF 10µF
C4 C5
VCC1 10µF 10µF
R5
100k:
C6 C7
DDC
SCL
SDA
SALRT
SYNC
VIN
VDD
VR5
VR6
VDRV
VCC
VDRV1
R6
6.65k:
VMON
PIN STRAP RESISTORS
(OPTIONAL)
R8 R9 R10 R11
ISL8273M
VR55
VR
SWD1
SW1
SWD2
SW2
VOUT
4x100µF
CERAMIC
C8
12x100μF 12x470μF
CERAMIC POSCAP
C23
C24
VOUT
1V 240A
SMBus Address = 0x2B
56.2k:
R14
PIN STRAP RESISTORS
(OPTIONAL)
R15 R16 R₁₇ R18
4x47µF
CERAMIC
C9
C10
10µF
10µF 10µF
C11 C12
VCC2 10µF 10µF
R12
100k:
C13 C14
R13
6.65k:
DDC
SCL
SDA
SALRT
SYNC
VIN
VDD
VR5
VR6
VDRV
VCC
VDRV1
VMON
ISL8273M
VR55
VR
SWD1
SW1
SWD2
SW2
VOUT
4x100µF
CERAMIC
C15
SMBus Address = 0x2C
61.9k:
R21
4x47µF
CERAMIC
C16
C17
10µF
10µF 10µF
C18 C19
VCC3 10µF 10µF
R19
100k: C20 C21
R20
6.65k:
DDC
SCL
SDA
SALRT
SYNC
VIN
VDD
VR5
VR6
VDRV
VCC
VDRV1
VMON
PIN STRAP RESISTORS
(OPTIONAL)
R22 R23 R24 R25
ISL8273M
VR55
VR
SWD1
SW1
SWD2
SW2
VOUT
4x100µF
CERAMIC
C22
FIGURE 4. TYPICAL APPLICATION CIRCUIT - THREE MODULE CURRENT SHARING
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8
FN8704.2
March 16, 2016