SPVA032 September   2025 LM5152-Q1 , LP8866-Q1 , LP8866S-Q1

1.   1
2.   Abstract
3.   Trademarks
4. 1Introduction
5. 2Expected System Challenges Without Pre-Boost
   1. 2.1 Undervoltage Protection of High-Side Switch
   2. 2.2 System Bias Power Interruption
   3. 2.3 Unexpected Lower Input Voltage on LED Driver
   4. 2.4 Unexpected Higher Input Current Condition in the System
6. 3Design Suggestion to Resolve the System Challenges by Using Pre-Boost
   1. 3.1 Block Diagram and Test Results
   2. 3.2 Key Design Considerations
7. 4Summary
8. 5References

Using Pre-Boost for More Robust Design of Automotive Display Modules With Global Dimming LED Drivers