Power Electronics
5011 articles · Page 206 of 209
GaN HEMT Dynamic Rds(on) Characterization: Double-Pulse Test
Step-by-step guide to double-pulse testing for Qg, Qgd, and dynamic resistance rise—highlighting gate drive voltage, temperature, and layout dependencies.
Power Supply Hold-Up Time Testing: Capacitor Aging Effects &
Outline standardized hold-up test setup (load step, voltage dip trigger), interpret degradation curves for electrolytics, and predict end-of-life based on capac
Power MOSFET Avalanche Energy Rating: Testing Beyond Datashe
Explain unclamped inductive switching (UIS) test setup, energy calculation methodology, and why repetitive avalanche derating is critical for motor drive applic
AC-DC Supply Audible Noise Diagnosis: Transformer Whine vs.
Differentiate root causes using frequency analysis (FFT), mechanical damping tests, and voltage-bias-dependent tone shifts—plus mitigation tactics per source.
Synchronous Rectifier MOSFET Loss Analysis: Conduction vs. S
Use SPICE simulation and bench measurements to isolate body diode conduction loss, gate charge loss, and Rdson contribution in secondary-side FETs.
High-Voltage Gate Driver Level-Shifting: Bidirectional Isola
Compare transformer-based vs. capacitive isolation, timing skew impact on dead-time, and validate level-shift integrity under dV/dt > 50 V/ns conditions.
DC-DC Converter Stability Margin Assessment: Bode Plot via N
Describe injection point selection, gain/phase margin measurement protocol, and interpreting crossover frequency for Type II/III compensators in buck controller
DC-DC Converter Inrush Current Limiting: NTC Thermistor vs.
Benchmark turn-on surge suppression methods using thermal time constants, steady-state losses, and reliability data from 12–48 V input converters.
Gate Driver Propagation Delay Mismatch: Impact on Half-Bridg
Quantify timing skew effects in dual-channel gate drivers, measure delay mismatch with pulse generators, and select drivers with <5 ns matching for SiC/GaN brid
Thermal Imaging Best Practices for Power Electronics PCB Hot
Guide technicians on emissivity settings, distance-to-spot ratio calibration, delta-T thresholds, and correlating IR images with current density simulations.
Buck Converter Output Capacitor Selection: Aluminum Polymer
Compare ESR, ripple current rating, aging, microphonics, and cost across capacitor types for 1–5 MHz switching buck converters up to 48 Vout.
EMI Filter Design for 650V GaN AC-DC Supplies: CISPR 32 Clas
Provide component selection rules (X/Y caps, common-mode chokes), layout tips, and pre-compliance near-field scanning methods for high-frequency GaN-based suppl
Isolated Gate Driver Creepage & Clearance Requirements: IEC
Break down reinforced insulation distances, material group classifications (CTI), and PCB slotting rules for 1 kV+ isolated gate drivers in industrial systems.
Power MOSFET SOA Validation: Safe Operating Area Curve Inter
Walk through reading datasheet SOA plots, calculating real-world thermal limits, and designing derating margins for pulsed and linear-mode operation.
AC-DC Power Supply Efficiency Testing per DOE Level VI & CoC
Detail lab procedures for measuring no-load power, average efficiency at 10/20/50/100% loads, and reporting compliance with U.S. DOE and EU CoC standards.
Voltage Regulator Load Transient Response: Fixing Overshoot
Diagnose and resolve transient instability in LDOs and buck regulators using ESR optimization, capacitor placement, and feedback compensation techniques.
Solar Charge Controller Temperature Compensation Accuracy Va
Test compensation curve fidelity across -20°C to +70°C using calibrated thermal chambers and reference voltage standards per IEEE 1547.1 Annex H.
DC-DC Converter Ripple Measurement: Oscilloscope Setup Guide
Explain step-by-step oscilloscope probe selection, bandwidth limiting, ground loop avoidance, and RMS vs. peak-to-peak interpretation for engineers validating s
How to Troubleshoot DC-DC Converter Output Droop Under High-
Diagnose PCB layout resonance, capacitor ESR issues, and control loop instability using impedance analysis and Bode plot measurements at >10kHz loads.
UPS System Harmonic Current Emission Compliance Testing Work
Map IEC 61000-3-2 Class A/B/C/D limits to UPS output harmonics, explain FFT bin alignment, and identify common compliance pitfalls in double-conversion designs.
Battery Management System Communication Latency Benchmark Re
Present measured CAN/FlexRay latency across 10 BMS units under concurrent cell monitoring, fault reporting, and pack balancing commands.
AC-DC Power Supply Hold-Up Time Verification Using Electroni
Demonstrate precise hold-up measurement with programmable load steps, AC line drop triggering, and capacitor aging compensation per IEC 61347-1 Annex F.
UL 1741 SA Grid Support Function Testing Requirements Explai
Break down mandatory tests for reactive power support, frequency-watt response, and ride-through curves—including required test equipment and pass criteria.
How to Measure Solar Charge Controller Nighttime Reverse Cur
Explain dark-state leakage testing with microamp precision, diode forward voltage compensation, and impact assessment on battery self-discharge rates.