Inmotion DCC80M24 DCC3 DC/DC Converter

The Inmotion DCC3 (DCC80M24) is a high-voltage DC/DC converter designed to supply a stable low-voltage output to the auxiliary system of an electric or hybrid vehicle. The DCC80M24 accepts a high-voltage battery input across a 270–900 V range and delivers an adjustable 12 V or 24 V output, with galvanic isolation between the high- and low-voltage sides for improved system reliability and personal safety. Built on Silicon Carbide (SiC) technology, it reaches efficiencies of up to 97 % in a rugged, liquid-cooled package rated to IP6K9K for the demanding environment of electric vehicles.

At the core of the DCC80M24 is a SiC power stage with liquid (water/ethylene-glycol) cooling that minimises physical size, an adjustable output voltage with current limiting, and a boost mode delivering up to 10 kW of output power. Pre-charge from the low-voltage side allows the high-voltage circuit to be simplified, and multiple units can be paralleled to achieve higher output power. The converter integrates a dedicated hardware security module developed to ISO 21434 and prepared for UNECE R155 and R156, and is designed to meet ISO 13849 and ISO 26262 functional safety requirements, with a Hazardous Voltage Interlock Loop (HVIL), automatic over-temperature and over-voltage protection, a short-circuit-protected low-voltage output and a lockstep safety MCU.

The DCC80M24 communicates over CAN using J1939 and/or CANopen, with diagnostics and software download through UDS and calibration via XCP, and connects through a TE HDSCS logic connector, a TE HVA HD400 high-side input and cable-lug low-side output. Configuration is handled through the Zapi group software platform, which offers a customisable collection of standard vehicle functions to suit specific applications. Inmotion designs and assembles in Sweden and works in close cooperation with integrators to configure the product to their needs; specifications are subject to change without notice, and it is the responsibility of the product user to determine suitability for a specific application.

Key Specifications:

• Model: DCC80M24 (Inmotion DCC3 platform)
• Type: High-voltage DC/DC converter
• Input Voltage Range: 270–900 V (14.1 V output) / 550–900 V (28.3 V output)
• Nominal Output Voltage: 14.1 V or 28.3 V (adjustable via CAN or parameter; typical 12 V / 24 V battery)
• Max Output Current: 270 A (continuous)
• Boost Output Current: 360 A (boost limited to 5% of service life)
• Output Power: 3.75 kW (14.1 V) / 7.50 kW (28.3 V)
• Boost Output Power: 5.0 kW (14.1 V) / 10.0 kW (28.3 V)
• Efficiency: up to 97% (Silicon Carbide technology)
• Control Mode: voltage or current
• Communication: CAN (J1939, UDS; CANopen supported); software download via UDS, calibration via XCP
• Logic Supply: 8–32 V
• Wake-up Source: UNIT_ENABLE and/or CAN
• I/O:
  • UNIT_ENABLE × 1
  • HVIL loop × 1
  • Address pins: 3 selectable inputs
  • CAN × 1
  • Logic supply × 1
  • Battery voltage sensor analogue input × 1
• Connections:
  • I/O logic connector: TE HDSCS
  • High-side (power in): TE HVA HD400
  • Low-side (power out): cable lugs
• Cooling: liquid (water/ethylene-glycol), nominal flow 5–20 l/min
• Coolant Temperature: −40°C to +70°C
• Ambient Operating Temperature: −40°C to +85°C
• Max Operating Altitude: 5000 m
• Protection: IP6K9K (to 140 bar), IP67, IP2X (connector cover); tested to ISO 20653
• Safety: HVIL; active and passive HV discharge; over-temperature, over-voltage and short-circuit protection; lockstep safety MCU; galvanic isolation
• Functional Safety: designed to meet ISO 13849 and ISO 26262 requirements
• Cybersecurity: dedicated hardware security module to ISO 21434; prepared for UNECE R155 and R156
• EMC: UN ECE R10
• Environmental / Electrical Safety: ISO 16750, ISO 6469-3
• Documentation / Process: AIAG PPAP; development per Automotive SPICE
• Dimensions: 438 × 216 × 85 mm
• Weight: 9 kg
• Note: Specifications subject to change without notice.