User Manual
932
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
High-Side Switch
26.2
Introduction
26.2.1
Block Diagram
Figure 214 High-Side Module Block Diagram (incl. subblocks)
26.2.2
General
The high-side switch can generally be controlled in three different ways:
• In Normal mode the output stage is fully controllable through the
SFR
Registers
HSx_CTRL
. Protection
functions as overcurrent, overtemperature and open load detection are available.
• The PWM Mode can also be enabled by a
HSx_CTRL - SFR
bit. The PWM configuration has to be done in the
corresponding PWM Module. All protection functions are also available in this mode. The maximum PWM
frequency must not exceed 25 kHz (disabled slew rate control only).
• The high-side switch provides also the possibility of cyclic switch activation in all low power modes (Sleep
Mode and Stop Mode). In this configuration it has limited functionality with limited current capability.
Diagnostic functions are not available in this mode.
26.3
Functional Description
High Side
Driver
OC-Detection
OL-Detection
Cyclic-
Driver
SFR
25 mA
50 mA
100 mA
150 mA
1,5 mA
ON
OCTH_SEL
OLTH
VS
HS