ISL28023 Datasheet, PDF (18/55 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)
1
-1
-3
-5
-7
TIME = 0.512ms
-9
TIME = 1.024ms
-11
TIME = 2.048ms
-13
TIME = 0.64ms
TIME = 0.128ms
TIME = 0.256ms
-15
10
100
1k
10k
FREQUENCY (Hz)
100k
FIGURE 39. AUXILIARY V_BUS BANDWIDTH vs ADC TIMING
1
TIME = 0.64ms
-1
-3
AUX V_SHUNT
-5
AUX V_BUS
-7
-9
-11
-13
-15
10
100
1k
10k
FREQUENCY (Hz)
100k
FIGURE 40. AUXILIARY V_SHUNT AND V_BUS vs FREQUENCY
12
V_INPUT = 25mV
10
8
6
4
2
0
V_OS (mV)
FIGURE 41. AUXILIARY V_BUS V_OS
2.0
V_INPUT = 25mV
1.5
1.0
T = +125°C
0.5
T = -40°C
T = +25°C
0
-0.5
-1.0
-1.5
-2.0
3.0
3.5
4.0
4.5
5.0
5.5
6.0
V_CC (V)
FIGURE 42. AUXILIARY V_BUS V_OS vs V_CC
12
V_INPUT = 25mV
10
8
6
4
2
0
V_OS TC (µV/°C)
FIGURE 43. AUXILIARY V_BUS V_OS TC
2.0
1.5
1.0
V_CC = 3V
0.5
V_CC = 3.3V
0
-0.5
-1.0
-1.5
-2.0
-60
V_CC = 5V
-40 -20 0
20 40 60 80
TEMPERATURE (°C)
V_INPUT = 25mV
100 120 140 160
FIGURE 44. AUXILIARY V_BUS VOS vs TEMPERATURE
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FN8389.5
March 18, 2016