Efficient Power Electronics Conversion TRIZ Cases
- Active Voltage Bus Converter for Dynamic DC Bus Regulation
PWM-controlled bidirectional conversion maintains a target DC bus voltage in real time, improving efficiency and thermal behavior without hardware changes.
- Factorized Power Accelerator for Fast CPU/GPU Load Transients
A parallel accelerator injects transient power onto a factorized bus to cut voltage droop and peak spikes during rapid CPU and GPU current steps.
- Piezoelectric Power Converter Trajectory Control for Efficiency
Trajectory control adjusts bridge switch timing around a piezoelectric transformer to lift converter efficiency from about 30% to at least 80%.
- Interleaved Boost PFC Converter Valley-Switching Synchronization
Dynamic offset timing synchronizes two boost phases for valley switching, improving power factor and cutting switching losses.
- Resonant Converter Current Sensing via Capacitor Voltage Sampling
Capacitor voltage sampling replaces current transformers and sensing resistors to cut loss and cost in resonant current detection.
- Totem-Pole ZVS PFC Boost Topology With Parasitic Energy Harvesting
Harvesting parasitic oscillation energy enables zero-voltage switching in a totem-pole PFC boost stage, cutting losses and dissipation.
- Totem Pole PFC Synchronous Rectification for Freewheeling Loss Reduction
PWM-driven synchronous rectification in totem pole PFC cuts freewheeling transistor losses by switching on voltage thresholds.
- Asynchronous Switch Power Supply With MOSFET Diode Replacement
Replacing diodes with a second switch transistor cuts voltage drop and power loss while avoiding extra PWM controller cost.
- LLC Resonant Circuit Control Using Body Diode Frequency Jitter
Adjusting synchronous rectifier body diode conduction time creates frequency jitter in LLC resonant circuits to cut switching noise under light load.
- Hybrid Flyback Circuit Control for Quasi-ZVS Current Tuning
Midpoint-voltage feedback tunes negative excitation current in a hybrid flyback circuit to achieve quasi-ZVS while cutting conduction and core losses.
- H-Bridge Bootstrap Charging for Smaller Gate Drive Capacitors
Short switch toggling recharges the bootstrap capacitor in an H-bridge gate drive, cutting capacitor size, weight, and distortion.
- Adjustable-Inductor ZVS Circuit for Variable-Load DC-DC Converters
Dynamic inductance control keeps zero-voltage switching efficient as DC-DC converter output changes, reducing power loss across load levels.
- Power Converter Switch Input Circuit for Inrush Current Control
Switched control of two input-side switches charges the output capacitor at startup while limiting inrush current and component stress.
- Integrated GaN Power Transistor Protection for Saturation Control
A depletion-mode sensing transistor and comparator shut off an integrated GaN switch at saturation, reducing parasitics and external gate power.
- Pre-Charged Zero Current Detection for Fast Inductor Reversal Sensing
A pre-charge circuit readies the detector transistor for faster current reversal sensing, cutting reverse current and high-voltage transients.