SLUAAY5A December   2024  – October 2026 UCC21551-Q1

1.   1
2.   Abstract
3.   Trademarks
4. 1Introduction
5. 2Automotive PTC Heater Module Overview
   1. 2.1 Automotive Heating Architectures
      1. 2.1.1 Positive Temperature Coefficient Heaters
      2. 2.1.2 Heat Pumps
   2. 2.2 Automotive Heating Architectures
   3. 2.3 PTC Heater Topologies
6. 3Design of Automotive PTC Heater Controller
   1. 3.1  Block Diagrams
   2. 3.2  Designing the Power Supplies
   3. 3.3  Picking Low-Dropout Regulators
   4. 3.4  Designing of the Communication Interface
   5. 3.5  Implementation of the Digital Isolator
   6. 3.6  Implementation of the Microcontroller Unit
   7. 3.7  Designing of the Switch Driver Stage
   8. 3.8  Selection of the Power Switches
   9. 3.9  Considerations of the PTC Load
   10. 3.10 Designing the Load Current Monitoring
   11. 3.11 Selection of the Temperature Sensing
7. 4Summary
8. 5References
9. 6Revision History