DC Bus Controller

Products

DC Bus Controller

Safely design interlock circuits of electric vehicles with the Safe Interlock Unit SIU

The DC Bus Controller enables the conventional PDU to become an intelligent component with current and temperature measurement, precharge and discharge functionality and industry standard diagnostic services. The Controller is highly flexible to be adjusted to the different requirements. The integrated software additionally enables advanced diagnostics and analysis, such as dynamic load calculation for fuses or predictive maintenance models.

01.

Simplifies integration

All the functions of a PDU are controlled by the DC Bus Controller and made available on CAN. No complex cable harnesses to the PDU are required.

02.

Cyber Security & Functional Safety

The control system contributes to the functional safety of the overall system and meets the highest cyber security requirements.

03.

Makes PDUs intelligent

The component allows model-based control of the power based on the thermal state of the EV. It enables intelligent control of DC charging.

Tech Specs

Application

The DC Bus Controller is our Electronic Control Unit, dedicated for different use cases in EVs. Its flexible architecture allows the use in components such as Power Distribution Units (PDUs), DC Charging Interfaces or Battery Disconnect Units. Thanks to the flexible internal interfaces the functionality needed in each different application can be implemented with Extension Boards.

*A-Samples available. B-Samples and custom features are available on request.

Technical Drawing

DC Bus Controller technical drawing
Function overview DC bus controller

Function overview DC bus controller

Norms and Regulations

  • AECQ-100 automotive compliant

  • ISO 6469-3:2018 compliant

  • ASIL Ready, ISO 26262 on request

  • ECE R10 compliant on request

Specifications

  • Dimensions. 123.86mm / 105.25mm / 11mm

  • Wide-range supply (8-36V)

  • Wakeup-Time <100ms

  • Secured CAN2.0B interface, 500 kBaud (adjustable)

  • Interlock Circuit according to LV123

  • 3 Contactor Driver with Feedback Input and integrated software switch counter

  • 6 Analog Sensor Inputs (I, U, R) designed for the most common current and temperature sensors

  • Daisy Chain / Stackable of multiple DC Bus Controllers

  • Multiple Extensions available: HV Sensor Module, Current Sensor Module, Inlet Control Module

  • Versatile extension Interface (Internal CAN / LIN / SPI / UART) for customizable applications and any kind of 3rd party sensors and actors.

  • UDS / J1939 diagnostic functionality

Interface description

VehicleCom
Main connection to the vehicle system
K15, Interlock In / Out, CAN
Connection: Molex 560020-1020

Supply
Board Input Supply
K30, K31
Connector: JAE MX81A004NF1R300

IO-Drive
Primary function: 3x switch driver
Secondary function: GPIO
K31, Relay+, Relay feedback
Connector: JAE MX81A004NF1R300

Supply Out
Switched supply max 10A
K30S, K31
Connection: JAE MX81A002NF1R470

Sensor In
6x Sensor Input configurable (4..20mA, 0..5V, 0.1..10k) +5V, Signal In, K30S
Connection: Molex 502352-0301

Aux
Flexible extensions for additional functions, e.g. inlet control unit
KL31, +5V, SPI, LIN, GPIO, UART
Connector: Molex 560020-1020

Extension In
Extension to add multiple DC controller boards in series or third-party components
K30S, K31, CAN, Address Line
Connector: Molex 502352-0601

Extension Out
Extension to add multiple DC controller boards in series or third-party components
K30S, K31, CAN, Address Line
Connector: Molex 502352-0601

Extensions

Multiple DC bus controllers in daisy chain configuration

The functions of DC Bus Controller can be easily extended through the adjust to your products need. The DC Controller Board can either used in parallel through the Extension Interface, or the additional Modules can be connected through the Aux connector. Multiple Boards can be connected as a Daisy Chain.

HV card: 2x 1000V voltage measurement, 2x temperature measurement, additional relay for precharging
Current: Current measurements according to customer requirements
Inlet: Inlet controller for DC charging functionality, including communication, LED driver, lock driver, CP PP

DC bus controller with various extensions

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