ISL6277HRZ Datasheet, PDF (5/37 Pages) Intersil Corporation – Multiphase PWM Regulator for AMD Fusion™ Mobile CPUs Using SVI 2.0

ISL6277
Simplified Application Circuit for Low Power CPUs [1+1 Configuration]
* Resistor required or ISEN1_NB
will pull HIGH if left open and
disable Channel 1.
10kΩ*
VNB1
NB_PH1
+5V
Ri
NTC
Cn
ISEN1_NB
ISEN2_NB
ISUMN_NB
ISUMP_NB
BOOTX
UGATEX
PHASEX
LGATEX
FCCM_NB
VIN
NB_PH1
VNB
VNB1
COMP_NB
PWM2_NB OPEN
VNB_SENSE
µP
* Resistor required or ISEN1_NB
will pull HIGH if left open and
disable Channel 1.
10kΩ*
+5V
+5V
FB_NB
VSEN_NB
PWROK
SVT
SVD
SVC
VDDIO
ISEN1
ISEN2
ISEN3
VCORE_SENSE
COMP
OPEN FB2
FB
VSEN
RTN
VO1
PH1
Ri
NTC
Cn
ISUMN
ISUMP
ISL6277
IMON_NB
NTC_NB
VR_HOT
NTC
IMON
THERMAL INDICATOR
PWM_Y OPEN
BOOT2 OPEN
UGATE2
PHASE2
OPEN
OPEN
LGATE2 OPEN
BOOT1
UGATE1
PHASE1
LGATE1
VIN
PH1
VCORE
VO1
FIGURE 6. TYPICAL APPLICATION CIRCUIT USING INDUCTOR DCR SENSING
5
FN8270.1
March 8, 2012