TLE7241E Datasheet, PDF (17/71 Pages) Infineon Technologies AG – Dual Channel Constant Current Control Solenoid Driver

TLE 7241E
Functional Description and Electrical Characteristics
OVER-VOLTAGE FAULT
VPOSx - VNEGx
on
LS-Switch
state
off
Vov
Vov-ovhyst
t < tov
Vpwr
14 V
Figure 4 Overvoltage Shutdown
Electrical Characteristics ¹⁾
T_j = -40 to 150 °C; V_BAT = 9 V to 18 V; V_DD = 4.75 V to 5.25 V
Pos. Parameter
Symbol Limit Values Unit Test Conditions
Min. Typ.²⁾ Max.
and Instructions
5.4.1.1 BAT Overvoltage OV
Shutdown
30 35 40 Vdc Ramp up BAT until
outputs Off
5.4.1.2 BAT Overvoltage OV_HYST –
hysteresis
1.0 –
Vdc Ramp BAT down
until outputs On³⁾
5.4.1.3 OUTx Active
V_clamp 50 53
60
V I_d = 20 mA, output
Clamp Voltage
off
1) Positive current flow is into the device.
2) T_J = 25 °C
3) Not subject to production test, specified by design.
5.4.2 Overcurrent / Short to V_BAT Sensing
An overcurrent fault is detected by sensing the voltage at the POS input pin. A
comparator is used to detect the voltage while the gate drive is on. When the voltage at
the POS input pin exceeds the short circuit / overcurrent threshold (see table below,
Item 5.4.2.3) for a time greater than the short sense time (see table below, Item 5.4.2.1)
Data Sheet
17
Rev. 1.1, 2009-01-19