Automotive 3kW 48V-12V Bidirectional DC-DC Converter

In recent years, xEV (hybrid-electric vehicles and battery-powered electric vehicles) are becoming popular to reduce greenhouse-gas emissions. The xEV may have a 48V battery inside in addition to a 12V battery to reduce electrical power loss.
This design is a bidirectional DC-DC converter required for the applications which have the 48V battery and the 12V battery. It achieves high efficiency operation by using Toshiba's automotive MOSFETs which have low on-resistance and high heat dissipation.
Design tips on each portion of the circuit, method of operation, and design information such as circuit diagrams and PCB patterns are available, please use them for your design.

Board Appearance
XPW4R10ANB XPW4R10ANB XPW4R10ANB XPW4R10ANB XPQR3004PB XPQR3004PB XPQR3004PB TPD7106F TPD7106F

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Features

  • Bidirectional converter with 48V to 12V buck and 12V to 48V boost
  • Total efficiency 92.2% (Boost operation, Vin = 48V, 100% load)
  • Total efficiency 91.3% (Buck operation, Vin = 12V, 100% load)
  • Built-in input/output circuits and various protection circuits
  • Equipped with the latest generation power MOSFETs and intelligent power devices

Description

Input voltage (Buck Operation) DC 24V to 54V, (Boost Operation) DC 5V to 16V
Output voltage (Buck Operation) DC 12V, (Boost Operation) DC 48V
Output power 3kW
Circuit topology 4-Phase Non-Isolated Bidirectional DC-DC Converter
Efficiency Curve

Design Documents

Materials for designers, such as an overview of circuit operation and explanations of design considerations. Please click on each tab to view the contents.

Design Data

Provides circuit data that can be loaded into EDA tools, PCB layout data, and data used in PCB manufacturing. Available in formats from multiple tool vendors. You can freely edit it with your preferred tool.

Used Toshiba Items

Part Number Device Category Portion Usage Description
Power MOSFET (N-ch single 60V<VDSS≤150V) 48V Input/Output Circuit & DC-DC Converter Circuit・32 N-ch MOSFET, 100 V, 70 A, 0.0041 Ω@10V, DSOP Advance(WF)L
Power MOSFET (N-ch single 30V<VDSS≤60V) 12V Input/Output Circuit・16 N-ch MOSFET, 40 V, 400 A, 0.00030 Ω@10V, L-TOGL
Intelligent power device (High side power-MOSFET driver with built-in charge pump) 12V Input/Output Circuit・4 Automotive Gate driver for High-side switch, SSOP16

Related Documents

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애플리케이션

Automotive DC-DC Converter
Such as reduction of power consumption and miniaturization are important in designing DC-DC converter. Toshiba provides information on a wide range of semiconductor products suitable for step-up or step-down DC-DC converter units, etc., along with circuit configuration examples.
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