Case Study
OBC PCBA Functional Test System
This case focuses on OBC PCBA functional testing, covering SBC/MCU voltage, E-Lock, CP, HV Interlock, wake/sleep current, IGBT drive waveform, HVDC current sampling, HVDC MOSFET drive, LVDC current sampling and LVDC MOSFET drive.
Case system visualOBC PCBA functional test architecture diagram
Test SoftwareInstrumentationFixtureDUTTraceability
Software, instrumentation, fixture, DUT and production data integration.Project Overview
Functional test case for OBC PCBA covering power electronics, interlock, drive waveform and current sampling validation.
Testing Requirements
- Cover OBC PCBA power electronics functional tests.
- Validate interlock, control signals, current sampling and drive waveforms.
- Avoid unsupported charging-protocol claims.
System Architecture
Test SoftwareMeasurement ResourcesControl / Drive Signal InterfaceFixture / InterfaceOBC PCBA DUTReport
Key Test Items
SBC / MCU VoltageE-LockCPHV InterlockWake / Sleep CurrentIGBT Drive WaveformHVDC Current SamplingHVDC MOSFET DriveLVDC Current SamplingLVDC MOSFET Drive
Engineering Challenges
- The DUT requires power, control, protection, signal and measurement checks.
- Drive waveforms and current sampling need validation together with DUT states.
- The test fixture must support signal interfaces and safety/interlock needs.
Implementation
- Test items are organized by Power, Control, Protection, Signal and Measurement.
- Test software controls measurement resources, interface actions and result records.
- A maintainable test flow is built around PCBA functional validation.
Engineering Outcome
- A power electronics functional test system was built for OBC PCBA.
- Interlock, sampling, drive signals and low-power states are key validation areas.
- Test results can support production decisions and engineering analysis.
Related Solutions
Related Engineering Capabilities
Test EngineeringHardware EngineeringInstrumentation & MeasurementFixture Engineering
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