TLE8201R Datasheet, PDF (13/45 Pages) Infineon Technologies AG – Door Module Power IC

TLE 8201R
4.2.3 Current Sense
A current proportional to the output current that flows from the selected power output to
GND is provided at the ISO (I sense out) pin. The output selection is done via the SPI.
The sense current can be transformed into a voltage by an external sense resistor and
provided to an A/D converter input (see section application).
4.2.3.1 Characteristics Current Sense
Electrical Characteristics
8 V < V_S < 20 V; 4.75 V < V_CC < 5.25 V; INH = High; all outputs open;
-40 °C < T_j < 150 °C; unless otherwise specified
Pos. Parameter
Sym- Limit Values Unit
bol _{min. typ. max.}
Conditions
HS1, HS2 (Register IS = 000, 001)
4.2.13 Output voltage range
4.2.14 Current Sense Ratio
4.2.15 Current Sense accuracy
4.2.16 Matching
HS3, HS4 (Register IS = 010, 011)
V_ISO12 0
k_ILIS12 –
k_ILISacc –
12
∆k_ILIS1 -6
2
–
3
V
V_CC = 5 V
2000 –
–
k_ILIS = I_OUT/I_ISO
–
10
%
I_OUT > 3 A
1
2
%
∆k_ILIS12 = (k_ILIS1
- k_ILIS2) / k_ILIS1
4.2.17 Output voltage range
4.2.18 Current Sense Ratio
4.2.19 Current Sense accuracy
HS7 (Register IS = 100)
V_ISO34 0
k_ILIS34 –
k_ILISacc –
–
3
V
V_CC = 5 V
1000 –
–
k_ILIS = I_OUT/I_ISO
–
10
%
I_OUT > 1.5 A
4.2.20 Output voltage range
4.2.21 Current Sense Ratio for HS7
4.2.22 Current Sense accuracy
V_ISO7 0
k_ILIS7 –
k_ILISacc –
–
3
V
V_CC = 5 V
2000 –
–
k_ILIS = I_OUT/I_ISO
–
10
%
I_OUT > 2A
Data Sheet Rev. 2.0
13
2006-06-07