ISL62881CHRTZ-T Intersil, ISL62881CHRTZ-T Datasheet - Page 14
![IC REG PWM SGL PHASE 28TQFN](/photos/28/21/282175/28-tqfn_l28_sml.jpg)
ISL62881CHRTZ-T
Manufacturer Part Number
ISL62881CHRTZ-T
Description
IC REG PWM SGL PHASE 28TQFN
Manufacturer
Intersil
Datasheet
1.ISL62881CHRTZ.pdf
(37 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL62881CHRTZ-T
Manufacturer:
INTERSIL
Quantity:
20 000
to V
V
Figure 11 shows the typical start-up timing when the
ISL62881C is configured for GPU VR application. The
ISL62881C uses digital soft-start to ramp-up DAC to the
voltage set by the VID pins at 5mV/µs. Once the output
voltage is within 10% of the target voltage for 13 PWM
cycles (43µs for frequency = 300kHz), CLK_EN# is
pulled low. PGOOD is asserted high in approximately
7ms. Similar results occur if VR_ON is tied to V
the soft-start sequence starting 120µs after V
the POR threshold.
Voltage Regulation and Load Line
Implementation
After the start sequence, the ISL62881C regulates the
output voltage to the value set by the VID inputs per
Table 1. The ISL62881C will control the no-load output
voltage to an accuracy of ±0.5% over the range of
0.75V to 1.5V. A differential amplifier allows voltage
sensing for precise voltage regulation at the
microprocessor die.
VID6 VID5 VID4 VID3 VID2 VID1 VID0
DD
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
DD
crosses the POR threshold.
, with the soft-start sequence starting 120µs after
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
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
TABLE 1. VID TABLE
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
14
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
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
ISL62881C, ISL62881D
ISL62881C, ISL62881D
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
DD
DD
crosses
1.5000
1.4875
1.4750
1.4625
1.4500
1.4375
1.4250
1.4125
1.4000
1.3875
1.3750
1.3625
1.3500
1.3375
1.3250
1.3125
1.3000
1.2875
1.2750
1.2625
1.2500
1.2375
1.2250
1.2125
1.2000
, with
(V)
V
O
VID6 VID5 VID4 VID3 VID2 VID1 VID0
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
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
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
TABLE 1. VID TABLE (Continued)
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
1
1
1
1
1
1
1
1
0
0
0
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
1
1
1
1
1
0
0
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
0
1
1
1
1
0
0
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
1
0
0
1
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
1
0
March 8, 2010
1.1875
1.1750
1.1625
1.1500
1.1375
1.1250
1.1125
1.1000
1.0875
1.0750
1.0625
1.0500
1.0375
1.0250
1.0125
1.0000
0.9875
0.9750
0.9625
0.9500
0.9375
0.9250
0.9125
0.9000
0.8875
0.8750
0.8625
0.8500
0.8375
0.8250
0.8125
0.8000
0.7875
0.7750
0.7625
0.7500
0.7375
0.7250
0.7125
0.7000
0.6875
0.6750
FN7596.0
(V)
V
O