Lemontree

Non-Isolated Bidirectional Converter Reference Design for Battery Charging Applications

TIDA-00653

Overview

TIDA-00653 is a non-isolated 48 to 12V bidirectional converter reference design for 48V battery applications supported by the UCD3138 digital power controller. The design is flexible and can operate in a ZVS switching mode topology to optimize light-load efficiency, or in a hard-switching topology for simple system design. The bidirectional converter uses automatic phase shedding and offset technology for light loads and uses adaptive dead-band optimization to achieve greater than 96% compound efficiency gain. Because efficiency is greatly improved, heat losses are reduced, eliminating the need for air or liquid cooling in automotive applications. In addition, using the UCD3138 high control frequency controller and hardware-based state machine allows for miniaturization and frees up the system CPU for other functions such as battery management.

characteristic

● ZVS conversion mode for light load efficiency
● Near-zero latency battery backup (< 9uS) to avoid power disturbances in applications
● Achieve 96% efficiency under various operating conditions with industry-leading battery life
● Reduces the size of the EMI filter to achieve a compact design

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Blockdiagram

Design Files

Documentation

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Update:2025-06-23 12:58:58

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