ISL6277A Datasheet, PDF (7/38 Pages) Intersil Corporation – Multiphase PWM Regulator for AMD Fusion Mobile CPUs Using SVI 2.0

ISL6277A
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
*
*
*OPTIONAL
VNB_SENSE
FB_NB
VSEN_NB
IMON_NB
NTC_NB
VR_HOT
THERMAL INDICATOR
µP
* Resistor required or ISEN1
will pull HIGH if left open and
disable Channel 1.
10kΩ*
+5V
+5V
PWROK
SVT
SVD
SVC
VDDIO
ISEN1
ISEN2
ISEN3
ISL6277A
NTC
IMON
PWM_Y OPEN
BOOT2 OPEN
UGATE2
PHASE2
OPEN
OPEN
COMP
LGATE2 OPEN
*
*
*OPTIONAL
VCORE_SENSE
OPEN FB2
FB
VSEN
RTN
VO1
PH1
Ri
NTC
Cn
ISUMN
ISUMP
BOOT1
UGATE1
PHASE1
LGATE1
VIN
PH1
VCORE
VO1
FIGURE 6. TYPICAL APPLICATION CIRCUIT USING INDUCTOR DCR SENSING
7
FN8322.0
December 19, 2012