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Analog eFuse, 750 V, 2 mΩ SiC JFET Cascode

This new reference design features an eFuse with 750 V and 2 mΩ total silicon carbide (SiC) JFET cascodes and a VOA300 optocoupler. It is designed to provide continuous power of up to 40 kW to the load. The design allows for continuous operation at full current with less than 30 W of losses and no active cooling. It also features a preload function, continuous current monitoring, and overcurrent protection with a shutdown time of less than 2.5 µs. Analog control is implemented in the low-voltage domain, and measurement data is transmitted across the isolation barrier using the VOA300.

Reference

<p>400 VDC 100 A Bidirectional eFuse</p><p>Schematic Design</p>

Diagram 1

Features

  • Disconnect loads in under 2 μs
  • Precharging of DC-link capacitors in power electronics
  • Resettable fuse
  • Adjustable current limit

Products

Optocoupler: VOA300

Automotive Fast Response Linear Optocoupler for Voltage and Current Sensing

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Resistor: WSLP3921,

WSLP5931 Power Metal Strip® Resistors, Very High Power (to 15 W), Low Value (Down to 0.0001 Ω), Surface-Mount

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Resistor: CDMA

Thick Film Chip Dividers, Medium Voltage

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Resistor: D2TO35

Surface Mount Power Resistor Thick Film Technology

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Resistor: MMU

0102, MMA 0204, MMB 0207 - Professional Professional Thin Film MELF Resistors

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