ISL6323EVAL1Z Intersil, ISL6323EVAL1Z Datasheet - Page 17

• Manufacturer Part Number: ISL6323EVAL1Z
• Description: EVAL BOARD 1 FOR ISL6323
• Manufacturer: Intersil

Specifications of ISL6323EVAL1Z

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Voltage Regulation
The integrating compensation network shown in Figure 8
insures that the steady-state error in the output voltage is
limited only to the error in the reference voltage and offset
errors in the OFS current source, remote-sense and error
amplifiers. Intersil specifies the guaranteed tolerance of the
ISL6323 to include the combined tolerances of each of these
elements.
The output of the error amplifier, V
modulator to generate the PWM signals. The PWM signals
control the timing of the Internal MOSFET drivers and
regulate the converter output so that the voltage at FB is equal
to the voltage at REF. This will regulate the output voltage to
be equal to Equation 11. The internal and external circuitry
that controls voltage regulation is illustrated in Figure 8.
V
000_0110b
000_0111b
000_1000b
000_1001b
000_1010b
000_1011b
000_1100b
000_1101b
000_1110b
000_1111b
001_0000b
001_0001b
001_0010b
001_0011b
001_0100b
001_0101b
001_0110b
001_0111b
001_1000b
001_1001b
001_1010b
001_1011b
001_1100b
001_1101b
001_1110b
001_1111b
NOTE: * Indicates a VID not required for AMD Family 10h processors.
OUT
SVID[6:0]
=
V
REF
–
V
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
1.1875
1.1750
1.1625
OFS
VOLTAGE (V)
–
V
DROOP
17
010_0110b
010_0111b
010_1000b
010_1001b
010_1010b
010_1011b
010_1100b
010_1101b
010_1110b
010_1111b
011_0000b
011_0001b
011_0010b
011_0011b
011_0100b
011_0101b
011_0110b
011_0111b
011_1000b
011_1001b
011_1010b
011_1011b
011_1100b
011_1101b
011_1110b
011_1111b
COMP
SVID[6:0]
, is used by the
TABLE 4. SERIAL VID CODES (Continued)
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
VOLTAGE (V)
(EQ. 11)
ISL6323
100_0110b
100_0111b
100_1000b
100_1001b
100_1010b
100_1011b
100_1100b
100_1101b
100_1110b
100_1111b
101_0000b
101_0001b
101_0010b
101_0011b
101_0100b
101_0101b
101_0110b
101_0111b
101_1000b
101_1001b
101_1010b
101_1011b
101_1100b
101_1101b
101_1110b
101_1111b
SVID[6:0]
The ISL6323 incorporates differential remote-sense
amplification in the feedback path. The differential sensing
removes the voltage error encountered when measuring the
output voltage relative to the controller ground reference point
resulting in a more accurate means of sensing output voltage.
0.6750
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*
VOLTAGE (V)
110_0110b
110_0111b
110_1000b
110_1001b
110_1010b
110_1011b
110_1100b
110_1101b
110_1110b
110_1111b
111_0000b
111_0001b
111_0010b
111_0011b
111_0100b
111_0101b
111_0110b
111_0111b
111_1000b
111_1001b
111_1010b
111_1011b
111_1100b
111_1101b
111_1110b
111_1111b
SVID[6:0]
0.2750*
0.2625*
0.2500*
0.2375*
0.2250*
0.2125*
0.2000*
0.1875*
0.1750*
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*
OFF
OFF
OFF
OFF
VOLTAGE (V)
October 21, 2008
FN9278.4