STDES-BCBIDIR
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11 kW bidirectional battery charger based on three phase two level PFC and isolated DC-DC converter

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Product overview

Description

The STDES-BCBIDIR is an 11 kW bidirectional battery charger and represents a complete solution for high voltage charging in both the industrial and automotive fields.

It consists of two power stages: a PFC and an isolated DC-DC stage. The PFC is based on a three-phase full-bridge topology.

The structure of the DC-DC section can be configured in DAB or CLLC topologies thanks to the external connection of the resonant cell.

Both stages are based on the ACEPACK DMT-32 SiC power module. The solution uses two control boards for the PFC and DC-DC stages respectively. The control board is based on the STM32G474RE microcontroller.

The PFC stage operating frequency is 70 kHz. The DC-DC stage is operating at fixed switching frequency (100kHz) or variable switching frequency (82 to 235 kHz), respectively in DAB or CLLC topology.

A system peak efficiency greater than 96% was achieved for the design in direct mode.

  • All features

    • PFC stage: 3-phase, 2-level bidirectional AC-DC power converter
      • Rated nominal AC voltage: 400 Vac at 50Hz
      • Rated nominal DC voltage: 800 Vdc
      • Nominal power: 11 kW
      • Rectifier mode:Power factor: PF > 0.99Inrush current control and soft startup
      • Inverter mode:Active and reactive power controlIntegrated grid connection solution
    • DC-DC stage: dual active bridge (DAB)/CLLC power converter
      • Nominal DC input voltage: 800 V
      • Nominal DC output voltage: 550 to 850 V
      • DAB switching frequency: 100 kHz
      • CLLC switching frequency range: 82 to 235 kHz
    • Power section based on SiC power modules
      • ACEPACK DMT-32 power module for high integration level
      • High frequency operation for weight and size reduction
      • Bidirectional capabilities
      • DAB soft switching behavior enabled by enhanced modulation techniques management

eDesignSuite

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Handles AC-DC and DC-DC design in common topologies
Displays interactive and annotated schematic
Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
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Power Management Design Center

Digital Power Workbench

Provides a step-by-step optimized design of power section and control loop
Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs

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Specify input/output power for each node in the tree
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Estimate

Build simple schematics and firmware inputs in minutes
Quickly generate reliable estimates of battery life, system power consumption and bill of materials costs
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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Longevity Commitment Longevity Starting Date Material Declaration**
STDES-BCBIDIR
Active
CARD Industrial - Yes - -

STDES-BCBIDIR

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

Grade

Industrial

RoHS Compliance Grade

-

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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STDES-BCBIDIR

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Core Product:

M1F45M12W2-1LA, STGAP2SICD, STM32G474RET3

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Not for sale

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors