ISL28023 Datasheet, PDF (19/55 Pages) Intersil Corporation – Bidirectional current sensing

ISL28023
Typical Performance Curves T_A = +25°C, VCC = 3.3V, VINP = VBUS = 12V, AUXP = AUXV = 3V,
VSHUNT = VAUXSHUNT = 80mV, Conversion Time: Aux = Primary = 2.05ms, Internal AVG Aux = Primary = 128; unless otherwise specified. (Continued)
4.5
4.5
4.0
4.0
3.5
3.5
3.0
3.0
2.5
2.5
2.0
2.0
1.5
1.5
1.0
1.0
0.5
0.5
0
0
GAIN ERROR (%)
FIGURE 45. AUXILIARY V_BUS ADC GAIN ERROR
V_AUXSHUNT GAIN ERROR TC (ppm/°C)
FIGURE 46. AUXILIARY V_BUS ADC GAIN ERROR TC
0.5
0.4
0.3
V_CC = 3V
0.2
V_CC = 3.3V
0.1
0
-0.1
-0.2
V_CC = 5V
-0.3
-0.4
-0.5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
AUX V (V)
FIGURE 47. AUXILIARY V_BUS MEASUREMENT ERROR vs INPUT
16
14
12
10
8
6
4
2
0
TEMPERATURE (°C)
FIGURE 49. INTERNAL TEMPERATURE ACCURACY AT T = +25°C
0.5
0.4
0.3
V_CC = 3.3V
0.2
0.1
0
-0.1
V_CC = 5V
-0.2
-0.3
V_CC = 3V
-0.4
-0.5
-60 -40 -20 0 20 40 60 80 100 120 140 160
TEMPERATURE (°C)
FIGURE 48. AUXILIARY V_BUS MEASUREMENT ERROR vs
TEMPERATURE
3.5
2.5
V_CC = 3.3V
V_CC = 3V
1.5
0.5
-0.5
-1.5
-2.5 ^{VCC = 5V}
T_{eqn_3.3} = -5.286*10^-11 * T_meas5 + 7.458 * 10^-9
* T_meas4 - 1.712 * 10^-6 * T_meas3 + 1.996 * 10^-4
* T_meas2 - 1.01 * T_meas1 + 0.813
-3.5
-60 -40 -20 0 20 40 60 80 100 120 140 160
TEMPERATURE (°C)
FIGURE 50. INTERNAL TEMPERATURE SENSOR ACCURACY
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FN8389.5
March 18, 2016