ISL6263B Datasheet, PDF (2/18 Pages) Intersil Corporation – 5-Bit VID Single-Phase Voltage Regulator with Current Monitor for IMVP-6+ Santa Rosa GPU Core

Block Diagram
VDD
VSS
RBIAS
OCSET
VSUM
DFB
DROOP
VO
VSEN
RTN
VDIFF
VID0
VID1
VID2
VID3
VID4
V_REF
+
1.545V
−
↓↓
1:1
−
OCP
+
+
−
VR_ON
×2
−
SCP
+
+
−
+
Σ
+
+
−
VID DAC
I_SS
↓
I_DVID
+
E/A
−
PGOOD
POR
VREF
PGOOD
SHORT
CIRCUIT
OVER
CURRENT
UNDER
VOLTAGE
OVER
VOLTAGE
FAULT
LATCH
X31
PWM
CONTROL
DIODE
EMULATION
AUDIBLE
FREQUENCY
FILTER
SEVERE
OVERVOLTAGE
SOFT
CROWBAR
CONTROL
DRIVER
SHOOT THROUGH
PROTECTION
DRIVER
+
g_mV_IN PWM
−
Δ V_W Δ V_W
20% 30%
R³
V_W
MODULATOR
+
g_mV_soft V_COMP
−
SOFT
FB
COMP IMON VIN
FIGURE 1. SIMPLIFIED FUNCTIONAL BLOCK DIAGRAM OF THE ISL6263B
BOOT
UGATE
PHASE
PVCC
LGATE
PGND
FDE
AF_EN
VW