TLE7233G_15 Datasheet, PDF (15/33 Pages) Infineon Technologies AG – 4 channel low-side driver with limp home

SPI Driver for Enhanced Relay Control
SPIDER - TLE7233G
Power Stages
OFF
IN0
Channel 0
IN0
&
ON
OFF
INx0
LHI
D0
OFF
IN1
Channel 1
IN1
&
ON
OFF
INx1
LHI
D1
OFF
IN2
Channel 2
IN2
&
ON
OFF
INx2
LHI
D2
OFF
IN3
Channel 3
IN3
&
ON
OFF
INx3
LHI
D3
Figure 5 Input Multiplexer
InputLogic_GS.emf
6.2
Inductive Output Clamp
When switching off inductive loads, the potential at pin OUT rises to V_DS(CL) potential, because the inductance
intends to continue driving the current. The voltage clamping is necessary to prevent destruction of the device,
see Figure 6 for details. Nevertheless, the maximum allowed load inductance is limited.
V_BAT
V DS(CL)
OUT
L,
I_D
R_L
V_DS
GND
Figure 6 Output Clamp Implementation
Datasheet
15
OutputClamp.emf
Rev. 1.2, 2014-05-09