Higher voltage batteries are becoming more prevalent in automotive and eBike applications. The extended VIN range is causing designers to examine more closely the line regulation of the pre-regulator. Furthermore, the pre-regulator might need to support a no load to full load condition, so load regulation is also of high importance. This application note reviews line and load regulation for 48-V battery and eBike, pre-regulators using LM5013-Q1 as an example.
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A common control topology employed in buck regulators is constant-on-time (COT). This control topology is being adopted in several 48-V battery and eBike, pre-regulators such as LM5013-Q1. This application note is an overview of how line and load regulation can be optimized with LM5013-Q1 for wide-VIN range applications, specifically, the 48 V battery and eBike applications.