ISL62881CHRTZ-T Intersil, ISL62881CHRTZ-T Datasheet - Page 15

• Manufacturer Part Number: ISL62881CHRTZ-T
• Description: IC REG PWM SGL PHASE 28TQFN
• Manufacturer: Intersil

Specifications of ISL62881CHRTZ-T

• Applications: Controller, Intel IMVP-6.5™
• Voltage - Input: 4.5 ~ 25 V
• Number Of Outputs: 1
• Voltage - Output: 0.0125 ~ 1.5 V
• Operating Temperature: -10°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 28-VQFN
• For Use With: ISL62881CCPUEVAL2Z - EVAL BOARD ISL62881CCPU 28QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

VID6 VID5 VID4 VID3 VID2 VID1 VID0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
TABLE 1. VID TABLE (Continued)
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
15
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
ISL62881C, ISL62881D
ISL62881C, ISL62881D
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0.6625
0.6500
0.6375
0.6250
0.6125
0.6000
0.5875
0.5750
0.5625
0.5500
0.5375
0.5250
0.5125
0.5000
0.4875
0.4750
0.4625
0.4500
0.4375
0.4250
0.4125
0.4000
0.3875
0.3750
0.3625
0.3500
0.3375
0.3250
0.3125
0.3000
0.2875
0.2750
0.2625
0.2500
0.2375
0.2250
0.2125
0.2000
0.1875
0.1750
(V)
V
O
FIGURE 12. DIFFERENTIAL SENSING AND LOAD LINE
As the load current increases from zero, the output
voltage will droop from the VID table value by an amount
proportional to the load current to achieve the load line.
The ISL62881C can sense the inductor current through
the intrinsic DC Resistance (DCR) resistance of the
inductors as shown in Figure 1 on page 9 or through
resistors in series with the inductors as shown in Figure 2
on page 10. In both methods, capacitor C
represents the inductor total currents. A droop amplifier
converts C
VID6 VID5 VID4 VID3 VID2 VID1 VID0
COMP
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
INTERNAL TO IC
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
n
E/A
TABLE 1. VID TABLE (Continued)
IMPLEMENTATION
voltage into an internal current source with
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
FB
Σ
I
VDAC
DROOP
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
R
V
DROOP
DROOP
DAC
X 1
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
VIDS
RTN
VSS
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
RESISTOR
RESISTOR
“CATCH”
“CATCH”
n
VR LOCAL VO
voltage
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
VCC
VID<0:6>
VSS
March 8, 2010
SENSE
SENSE
0.1625
0.1500
0.1375
0.1250
0.1125
0.1000
0.0875
0.0750
0.0625
0.0500
0.0375
0.0250
0.0125
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
FN7596.0
(V)
V
O