ISL62881_10 Datasheet, PDF (8/35 Pages) Intersil Corporation – Single-Phase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

ISL62881, ISL62881B
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
R _BIAS
VDD VCCP VIN
RBIAS
PGOOD
CLK_EN#
VID<0:6>
DPRSLPVR
VR_ON
RDROOP
PGOOD
CLK_EN#
VIDS
DPRSLPVR
VR_ON
VW
ISL62881
RFSET
BOOT
UGATE
COMP
FB
PHASE
LGATE
VSSP
VSEN
ISUM+
V _IN
L
VO
R_SUM
VCCSENSE
V S S SENSE
R _IMON
IM O N
RTN
RIS
CIS
IMON
ISUM-
(BOTTOM PAD)
VSS
RN
CN °C
RI
FIGURE 1. ISL62881 TYPICAL APPLICATION CIRCUIT USING DCR SENSING
8
FN6924.1
February 25, 2010