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STDES-PFCBIDIR

Active

15 kW, three-phase, three-level Active Front End (AFE) bidirectional converter for industrial and electric vehicle DC fast charging applications

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Parameter NameParameter Value
Operating RangeIndustrial
Target ApplicationAC-DC Converters
Core ProductSCTW35N65G2V, SCTW40N120G2VAG, STGAP2SM, VIPER26HD, STM32G474RET3
Input Voltage Min Volt208.0
Input Voltage Max Volt480.0
GradeIndustrial

This reference design represents a complete solution for three-phase AC/DC and DC/AC (800 VDC to 400 VAC) applications based on a digital platform optimized for power conversion.


It is well suited for the Active Front End (AFE) stage in high power charging stations, industrial battery chargers and UPS. The high switching frequency of the SiC MOSFETs and the multilevel structure allow nearly 99% efficiency as well as the optimization of passive power components in terms of size and cost.


The STDES-PFCBIDIR is a fully assembled kit developed for performance evaluation only, not available for sale.

Key features
  • 3-phase, 3-level bidirectional AC-DC power converter:
    • Rated nominal DC voltage: 800 VDC
    • Rated nominal AC voltage: 400 VAC at 50 Hz
    • Nominal power: 15 kW
  • AC to DC rectifier mode:
    • Power factor: PF >0.99
    • Inrush current control and soft startup
  • DC to AC inverter mode:
    • Active and reactive power control
    • Integrated grid connection solution
  • Power section based on SiC MOSFETs:
    • High frequency operation (70kHz)
    • High efficiency: >98%
    • Passive element weight and size reduction
  • Control section based on STM32G474RET3 microcontroller:
    • P2P compatible with different power converters solutions
    • Four integrated high-performance op-amps
    • Control and monitoring interfaces: SWD, UART, I²C, DACs
    • 64-pin digital power connector
    • Overcurrent and overvoltage protection