ISL62881 Datasheet, PDF (9/35 Pages) Intersil Corporation – Single-Phase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

ISL62881, ISL62881B
Simplified Application Circuits (Continued)
V+5 V+5 VIN
RBIAS
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
COMP
FB
UGATE
PHASE
LGATE
VSSP
VSEN
ISUM+
VCCSENSE
VSSSENSE
RIMON
IMON
RIS
CN
RTN
CIS
RI
IMON
ISUM-
(BOTTOM PAD)
VSS
VIN
L
RSUM
RSEN
VO
FIGURE 2. ISL62881 TYPICAL APPLICATION CIRCUIT USING RESISTOR SENSING
V+5 V+5 VIN
R BIAS
VDD VCCP VIN
R BIAS
OC
VR_TT#
PGOOD
CLK_EN#
VID<0:6>
DPRSLPVR
VR_ON
NTC
VR_TT#
PGOOD
CLK_EN#
VIDS
DPRSLPVR
VR_ON
VW
ISL62881B
RFSET
BOOT
UGATE
R DROOP
COMP
FB
VSEN
PHASE
LGATEB
LGATEA
VSSP
ISUM+
V IN
L
VO
RSUM
V C C SENSE
V S S SENSE
R IMON
IM O N
RTN
RIS
CIS
IM O N
ISUM-
GND
RN
CN ^OC
RI
FIGURE 3. ISL62881B TYPICAL APPLICATION CIRCUIT USING DCR SENSING
9
FN6924.0
October 26, 2009