ISL62883C Datasheet, PDF (5/43 Pages) Intersil Corporation – Multiphase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

ISL62883C
Block Diagram
VIN VSEN ISEN1 ISEN3 ISEN2 PGOOD CLK_EN#
VDD
VR_ON
PSI#
DPRSLPVR
RBIAS
VID0
VID1
VID2
VID3
VID4
VID5
VID6
RTN
FB
COMP
VW
IMON
ISUM+
ISUM-
MODE
CONTROL
DAC
AND
SOFT-
START
IBAL2
IBAL3
IBAL1
CURRENT
BALANCE
PGOOD &
CLK_EN#
LOGIC
IBAL
FLT
PROTECTION
IBAL2 VIN VDAC
WOC OC
VIN
MODULATOR
CLOCK
VDAC
COMP VW
COMP
IBAL3 VIN VDAC
6µA 54µA 1.20V
1.24V
DRIVER
SHOOT-THROUGH
PROTECTION
DRIVER
+
+_Σ
+
E/A
_
MODULATOR
COMP
IBAL1 VIN VDAC
IDROOP
IMON
+
CURRENT
_
SENSE
MODULATOR
+
_
2.5X
+
_
WOC
COMP
CURRENT
COMPARATORS
NUMBER OF
OC _PHASES
60µA
Σ ^{GAIN + +}
SELECT
DRIVER
SHOOT-THROUGH
PROTECTION
DRIVER
ADJ. OCP
THRESHOLD
COMP
VR_TT#
NTC
BOOT2
UGATE2
PHASE2
LGATE2
VSSP2
PWM3
BOOT1
UGATE1
PHASE1
VCCP
LGATE1
VSSP1
GND
5
FN7557.1
March 18, 2010