BTM7745G Datasheet, PDF (16/24 Pages) Infineon Technologies AG – High Current H-Bridge Trilith IC 3G

High Current H-Bridge
BTM7745G
Block Description and Characteristics
6.3.5 Short Circuit Protection
The device provides embedded protection functions against
• output short circuit to ground
• output short circuit to supply voltage
• short circuit of load
The short circuit protection is realized by the previously described current limitation in combination with the over-
temperature shut down (see Chapter 6.3.3) of the device.
6.3.6 Electrical Characteristics - Protection Functions
V_S = 8 V to 18 V, T_j = -40 °C to +150 °C, VS pins shorted, all voltages with respect to ground, positive current
flowing into pin (unless otherwise specified)
Pos. Parameter
Symbol Limit Values
Unit Test Conditions
Min. Typ. Max.
Over Voltage Lock Out
6.3.1 Switch-ON voltage
6.3.2 Switch-OFF voltage
6.3.3 ON/OFF hysteresis
Under Voltage Shut Down
V_OV(ON)
27.8 –
–
V
V_OV(OFF)
28
–
30
V
V_OV(HY)
–
0.2 –
V
V_s decreasing
V_s increasing
1)
6.3.4 Switch-ON voltage
6.3.5 Switch-OFF voltage
6.3.6 ON/OFF hysteresis
Thermal Shut Down
V_UV(ON)
–
–
5.5 V
V_UV(OFF)
4.0
–
5.4 V
V_UV(HY)
–
0.2 –
V
6.3.7
Thermal shut down junction T_jSD
temperature
155 175 200 °C
6.3.8
Thermal switch on junction T_jSO
temperature
153 –
190 °C
6.3.9 Thermal hysteresis
ΔT
–
7
–
°C
6.3.10 Reset pulse at INH and IN pin t_reset
(INH, IN1 and IN2 low)
8
–
–
µs
V_S increasing
V_S decreasing
1)
1)_{; VS ≤ 18 V}
1)
1)
1)
Current Limitation
6.3.11 Current limitation detection I_CLH0
level high side
6
12
16
A
V_S = 13.5 V
6.3.12 Current limitation detection I_CLL0
level low side
6
12
16
A
V_S = 13.5 V
6.3.13 Shut off time for HS and LS t_CLS
50
1) Not subject to production test, specified by design.
100 200 µs
V_S = 13.5 V, T_j = 25 °C
Data Sheet
16
Rev. 1.0, 2010-05-28