Automotive Range SEPIC Converter Delivers 4.5V@5.5A Reference Design (PMP8903)
In today’s start-stop systems, it is common for battery voltages to dip well below the nominal 12V rating. PMP8903 represents a very common start-stop application where that battery voltage can drop as low as 5V, and a 5V output is still needed for CAN and also as an intermediate bus. This design also features two tiny synchronous low-voltage buck regulators generating 3.3V and 1.1V from the 5V intermediate rail, contributing to an overall solution size that is very compact for space-constrained automotive environments. For an additional output voltage version of the design, see PMP8903.2
100% duty cycle capability 5V to 42V Input 5V output at 3.25A (LM3481 output) 1.1V output at 2A (TLV62065) 3.3V output at 1A (TLV62065) This example design is supported with design and test files
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