MAX17480GTL 데이터 시트보기 (PDF) - Maxim Integrated
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MAX17480GTL Datasheet PDF : 48 Pages
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AMD 2-/3-Output Mobile Serial
VID Controller
Table 4. Output-Voltage VID DAC Codes
SVID[6:0]
OUTPUT
VOLTAGE
(V)
SVID[6:0]
OUTPUT
VOLTAGE
(V)
000_0000 1.5500
010_0000
1.1500
000_0001 1.5375
010_0001
1.1375
000_0010 1.5250
010_0010
1.1250
000_0011 1.5125
010_0011
1.1125
000_0100 1.5000
010_0100
1.1000
000_0101 1.4875
010_0101
1.0875
000_0110 1.4750
010_0110
1.0750
000_0111 1.4625
010_0111
1.0625
000_1000 1.4500
010_1000
1.0500
000_1001 1.4375
010_1001
1.0375
000_1010 1.4250
010_1010
1.0250
000_1011 1.4125
010_1011
1.0125
000_1100 1.4000
010_1100
1.0000
000_1101 1.3875
010_1101
0.9875
000_1110 1.3750
010_1110
0.9750
000_1111 1.3625
010_1111
0.9625
001_0000 1.3500
011_0000
0.9500
001_0001 1.3375
011_0001
0.9375
001_0010 1.3250
011_0010
0.9250
001_0011 1.3125
011_0011
0.9125
001_0100 1.3000
011_0100
0.9000
001_0101 1.2875
011_0101
0.8875
001_0110 1.2750
011_0110
0.8750
001_0111 1.2625
011_0111
0.8625
001_1000 1.2500
011_1000
0.8500
001_1001 1.2375
011_1001
0.8375
001_1010 1.2250
011_1010
0.8250
001_1011 1.2125
011_1011
0.8125
001_1100 1.2000
011_1100
0.8000
001_1101 1.1875
011_1101
0.7875
001_1110 1.1750
011_1110
0.7750
001_1111 1.1625
011_1111
0.7625
Note: The NB SMPS output voltage has an offset of +12.5mV.
When using a current-sense resistor for accurate output-
voltage positioning, the circuit requires a differential RC
filter to eliminate the AC voltage step caused by the
equivalent series inductance (LESL) of the current-sense
resistor (see Figure 7). The ESL-induced voltage step
does not affect the average current-sense voltage, but
SVID[6:0]
100_0000
100_0001
100_0010
100_0011
100_0100
100_0101
100_0110
100_0111
100_1000
100_1001
100_1010
100_1011
100_1100
100_1101
100_1110
100_1111
101_0000
101_0001
101_0010
101_0011
101_0100
101_0101
101_0110
101_0111
101_1000
101_1001
101_1010
101_1011
101_1100
101_1101
101_1110
101_1111
OUTPUT
VOLTAGE
(V)
0.7500
0.7375
0.7250
0.7125
0.7000
0.6875
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
SVID[6:0]
110_0000
110_0001
110_0010
110_0011
110_0100
110_0101
110_0110
110_0111
110_1000
110_1001
110_1010
110_1011
110_1100
110_1101
110_1110
110_1111
111_0000
111_0001
111_0010
111_0011
111_0100
111_0101
111_0110
111_0111
111_1000
111_1001
111_1010
111_1011
111_1100
111_1101
111_1110
111_1111
OUTPUT
VOLTAGE
(V)
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
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
results in a significant peak current-sense voltage error
that results in unwanted offsets in the regulation voltage
and early current-limit detection. Similar to the inductor
DCR sensing method above, the RC filter’s time con-
stant should match the L/R time constant formed by the
current-sense resistor’s parasitic inductance:
______________________________________________________________________________________ 31
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