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Scalable 3 kW, 48 V / 12 V Bidirectional DC/DC Converter

This study of a 3 kW, 48 V/12 V DC-DC converter is based on a two-phase, interleaved buck/boost topology. Each phase operates at 185 kHz, has a 500 W capacity, and is equipped with back-to-back switches on both the 12 V and 48 V port. These switches protect against back conduction during UV conditions and allow phase sheding for higher efficiency in light load conditions. The converter has an automatic switching mechanism that allows it to switch between buck and boost modes, ensuring uninterrupted standalone operation. The converter's capacity can be easily scaled due to the modular approach.

Reference

Principle Diagram Scalable 3 kW, 48 V / 12 V Bidirectional DC/DC Converter

Diagram 1

Features

  • Scalable 3kW Power Architecture
  • Versatile Bidirectional Power Flow
  • Enhanced Efficiency and Reduced Ripple

Products

MOSFET: SQJQ184E

Automotive N-Channel 80 V (D-S) 175 °C MOSFET

MOSFET: SQJQ140E

Automotive N-Channel 40 V (D-S) 175 °C MOSFET

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