ISL62883C Datasheet, PDF (10/43 Pages) Intersil Corporation – Multiphase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

ISL62883C
Gate Driver Timing Diagram
PWM
UGATE
t_LGFUGR
t_RU
t_FU
1V
LGATE
1V
t_FL
t_RL
t_UGFLGR
Simplified Application Circuits
V+5 V+5 Vin
V+5
Vin
Rbias
Rntc
o_C
VDD VCCP VIN
RBIAS
NTC
PWM3
PGOOD
VR_TT#
CLK_EN#
VID<0:6>
PSI#
DPRSLPVR
VR_ON
PGOOD
ISEN3
VR_TT#
BOOT2
CLK_EN#
VIDs
UGATE2
PSI#
PHASE2
DPRSLPVR
VR_ON
VW
LGATE2
VSSP2
ISEN2
Rfset
ISL62883C ^BOOT1
VCC
UGATE
FCCM
PHASE
ISL6208
PWM
BOOT
LGATE
GND
Rs3
Cs3
Rs2
Cs2
L3
L2
Vo
UGATE1
L1
Rdroop
VCCSENSE
VSSSENSE
COMP
FB
VSEN
RTN
PHASE1
LGATE1
VSSP1
ISEN1
ISUM+
Rs1
Cs1
Rn
Cn ^oC
Rsum3
Rsum2
Rsum1
Rimon
Ri
IMON
IMON
ISUM-
(Bottom Pad)
VSS
FIGURE 1. TYPICAL 3-PHASE APPLICATION CIRCUIT USING DCR SENSING
10
FN7557.1
March 18, 2010