ISL6260CCRZ Datasheet, PDF (14/28 Pages) Intersil Corporation – Multiphase PWM Regulator for IMVP-6+ Mobile CPUs

ISL6260C
Simplified Application Circuit for DCR Current Sensing
Figure 39 shows a simplified application circuit for the
ISL6260C converter with inductor DCR current sensing. The
ISL6208 MOSFET gate driver has a force-continuous-
conduction-mode (FCCM) input, that when disabled, allows
the regulator to operate in Diode Emulation for improved
light load efficiency. As shown in the circuit diagram, the
FCCM pin is connected to ISL6260C, which programs the
CCM or DCM mode.
V₊₅ V_IN V_+3.3
VDD VIN 3V3
RBIAS
VR_TT#
7
VID<0:6>
DPRSTP#
DPRSLPVR
PSI#
PWR MONITOR
CLK_ENABLE#
VR_ON
IMVP-6+_PWRGD
REMOTE SENSE
AT CPU CORE
R_i
C₃ R3
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
VSUM
VW
OCSET
GND DFB DROOP VO
VSUM
C_CS
R_N
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_L CL
ISEN1
VO'
VSUM
V_IN
L_O
R_L CL
ISEN2
VSUM
VO'
V_IN
V_O
C_O
L_O
R_L CL
ISEN3
VSUM
VO'
VO'
FIGURE 39. TYPICAL APPLICATION CIRCUIT FOR DCR SENSING
14
FN9259.3
June 21, 2010