0DD-104 Power-Up Interface Card

Project Info:

Main Project:
Inverter Testbench Project
Client:
Ario MetaPower
Design Completion Date:
2023-08-04
Design Complexity:
Interesting Stats: The design comprised 34 unique components and a total of 93 components.

Project Description:

The 0DD-104 Power-Up Interface connects the Inverter Test Bench to the 0DD-104 project during testing, providing critical protection during initial power-up.

It includes:

  • Reverse polarity protection
  • Accurate, fast-response overvoltage protection

The overvoltage protection circuit features a rapid disconnect mechanism with a narrow cut-off tolerance of just ±0.25 V, ensuring the 0DD-104 is immediately isolated from the test bench if supply voltages exceed absolute limits. This prevents damage during early-stage testing and validation.

Main Project:

Electron Artz was commissioned by Ario MetaPower to design a flexible, large-scale test bench to rigorously evaluate all inputs, outputs, and subsystems of the inverter control stack during production.

To accommodate potential future changes in the inverter’s design, the test bench architecture was built with flexibility at its core. This led to a modular system based on a Master Controller (motherboard) paired with multiple specialised interface modules.

For testing the inverter control stack, the Test Bench was configured with the following modules:

  • Two modules with 32 Digital-to-Analogue Converters (DACs) each
  • One module with 32 Analogue-to-Digital Converters (ADCs)
  • Two VRail modules, each with 16 power supply load testers
  • One communications module
  • One GPIO module with 40 general-purpose digital inputs and outputs

The system also included:

  • A variable power supply with built-in current measurement
  • An infrared camera interface, enabling safe, gradual power-up of the control stack for thermal and current-draw analysis

This setup made it possible to verify component placement after board population and detect faults early, significantly improving production confidence and system reliability.

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