User Manual
947
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
Low-Side Switch
27
Low-Side Switch
27.1
Features
The general purpose low-side switch is optimized to control an on-board relay. The low-side switch provides
embedded protection functions including overcurrent and overtemperature detection. The module is
designed for on-board connections.
Measures for standard ESD (HBM) and EMC robustness are implemented.
Functional Features
• Multi purpose low-side switch optimized for driving relays:
– simple relay driver
– PWM relay driver
• Integrated clamping for usage as a simple relay driver
• overcurrent detection and automatic shutdown
• overtemperature detection and automatic shutdown
• interrupt signalling of overcurrent and overtemperature condition
• open load detection with interrupt signalling
• PWM capability up to 25 kHz (for inductive loads with external clamping circuitry only!)
• Selectable PWM source: dedicated CCU6 channels
• Current drive capability up to min. 270 mA
Applications hints
• It is not recommended to use the switch in PWM Mode without external free wheeling diode. See