Efficient Power Electronics Conversion TRIZ Cases

Segmenting monolithic large-power transformers into modular units resolves inflexibility and high material costs while ensuring fault tolerance.

Synchronizing initialization signals across a galvanic barrier prevents overvoltage and stabilizes output voltage levels during flyback converter startup.

Steering magnetizing current above output choke levels eliminates reverse recovery losses and hard switching.

A zero current detection circuit uses a single winding and op-amp buffer to generate low-noise pulses.

A controller adjusts synchronous rectifier switch on-times to balance load distribution across parallel resonant converters.

Snubber circuit absorbs transformer energy to reduce electromagnetic interference and improve converter efficiency.

A secondary side protection apparatus measures voltage signal intervals to generate turn-off signals.

A resonant converter switch control circuit determines operating regions by comparing conduction and on-periods to adjust current limits.

An embedded snubber merges a damping resistor and parasitic capacitor within transistor substrate regions to suppress switching harmonics.

Eliminates costly optocouplers by encoding output voltage into data bits transmitted via transformer magnetic coupling during reset intervals.

A DC-DC converter uses a reverse current detecting circuit to adjust switching element pulse widths and prevent backflow.

Auxiliary switches form energy-releasing loops to fix common mode voltage and limit leakage currents caused by parasitic capacitance.

A two-stage LED driver uses a buck PFC circuit and passive voltage multiplier to shape input current waveforms.

Integrating GaN FET switches with gate drivers on one die reduces parasitic inductance, enabling higher pulse frequencies without increasing device area.

A current corrector superimposes harmonic components on commanded currents to reduce output distortions in DC-AC converters.

Segmenting secondary windings into fractional turns reduces copper loss while maintaining magnetic field balance in high wattage LLC converters.

A synchronous rectifier drive circuit uses a blanking time generator to inhibit turn-on signals after shutdown.

A power converter controller uses a logic circuit to generate adjustable jitter signals that dynamically modulate switching frequency.

Air core toroid detects transformer current to eliminate propagation delay and improve high-frequency power conversion efficiency.

Synchronous rectifier controller adaptively adjusts minimum off-time periods to prevent premature switching.

Controller circuitry saves load state to adjust switching frequency and extend hold-up time.

A configurable controller combines constant on-time and constant power control modes to adjust the power factor of a switching power converter.

A switching power supply adjusts driving pulse time periods to manage output voltage stability.

Segmenting the converter into multiple cells reduces switching losses and electromagnetic interference while maintaining high power conversion capability.

Monitors inductor pulse delays to expedite transitions from discontinuous to continuous mode, reducing switching losses at low load.

Segmented switch devices stabilize low level voltage output by isolating clock signal fluctuations from the power supply node.

A remote-activated turn-on circuit uses a phototransistor to trigger a transistor gate, charging a capacitor to power the driving stage.

Snubber capacitor charges during switching to enable zero voltage transitions, reducing energy losses and cooling requirements in photovoltaic inverters.

A power conversion device balances output voltages across series resonant circuits using dynamic switching frequencies derived from real-time voltage deviations.

A resonant converter circuit merges power factor correction with energy conversion to eliminate dedicated PFC components.

Controller monitors auxiliary winding voltage peaks to trigger leakage current protection, preventing diode overheating without adding circuit complexity.

A bidirectional DC-DC converter rectifier cancels capacitor effects during indirect mode operation.

A resonant power converter adjusts gain and switching frequency based on input voltage magnitude to maintain stable output.