ISL6260CCRZ Datasheet, PDF (15/28 Pages) Intersil Corporation – Multiphase PWM Regulator for IMVP-6+ Mobile CPUs

ISL6260C
Simplified Application Circuit for Resistive Current Sensing
Figure 40 shows a simplified application circuit for the
ISL6260C converter with external resistor current sensing. A
capacitor is added in parallel with RL in order to improve the
stability margin of the channel current balance loop. No NTC
thermistor is needed and the droop circuit is simplified.
V₊₅ V_+3.3 V_IN
VR_TT#
7
VID<0:6>
PWR MONITOR
CLK_ENABLE#
VR_ON
IMVP-6+_PWRGD
REMOTE SENSE
AT CPU CORE
R_i
C₃ R3
VDD 3V3
VIN
RBIAS
NTC
VR_TT#
PWM1
ISEN1
SOFT
VIDs
DPRSTP#
ISL6260C
DPRSLPVR
PSI#
PMON
CLK_EN#
VR_ON
PWM2
ISEN2
PGOOD
VSEN
RTN
VDIFF
FCCM
C₁ R1
C₂
RFSET
FB
COMP
PWM3
ISEN3
VW
GND
VSUM
OCSET
DFB DROOP VO
VSUM
V₊₅
VCC
BOOT
PWM
UGATE
ISL6208
PHASE
FCCM
LGATE
GND
V₊₅
VCC
BOOT
PWM
UGATE
ISL6208
PHASE
FCCM
LGATE
GND
V₊₅
VCC
BOOT
PWM
UGATE
ISL6208
PHASE
FCCM
LGATE
GND
V_IN
L_O
R_SEN
VSUM
ISEN1
VO'
V_IN
R_L
C_L
L_O
R_SEN
VSUM
R_L
ISEN2
C_L
VO'
V_IN
V_O
C_O
L_O
R_SEN
VSUM
ISEN3
VO'
R_L
C_L
VO'
FIGURE 40. TYPICAL APPLICATION CIRCUIT FOR DISCRETE RESISTOR CURRENT SENSING
15
FN9259.3
June 21, 2010