TLE7233EM Datasheet, PDF (15/33 Pages) Infineon Technologies AG – SPI Driver for Enhanced Relay Control

SPI Driver for Enhanced Relay Control
SPIDER - TLE7233EM
Power Stages
OFF
IN0
ON
OFF
INx0
LHI
OFF
IN1
ON
OFF
INx1
LHI
OFF
IN2
ON
OFF
INx2
LHI
OFF
IN3
ON
OFF
INx3
LHI
Channel 0
&
D0
Channel 1
&
D1
Channel 2
&
D2
Channel 3
&
D3
InputLogic_EM.emf
Figure 5 Input Multiplexer
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
Data Sheet
15
OutputClamp.emf
Rev. 1.2, 2014-05-09