User Manual
951
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
Low-Side Switch
27.2.2.1 Application Requirement for Low-Side Switch in PWM Mode
The low-side switch is not designed, to handle the amount of energy, which is generated by switching an
inductive load in PWM Mode. Therefore an external free wheeling diode is required to absorb the generated
energy. The picture below shows the possible application diagram for this case.
Figure 220 Module Block Diagram (with interconnects and ext. components).
Low Side
Driver
OC-Detection
Clamp
XSFR
500 mA
ON
LS
LSGND
VS
VBAT
External
Diode for
PWM