Efficient Power Electronics Conversion TRIZ Cases

A DC-DC converter adjusts its reference voltage to stabilize output levels during battery transitions.

A zero-current detector uses an offset cancellation circuit to sample and remove comparator offsets for accurate switching.

A switching power supply device maintains minimum pulse width during light load conditions to ensure stable power delivery.

Secondary controller generates negative current to eliminate output voltage undershoots and improve no-load efficiency.

A switching mode power supply controller adjusts frequency based on demagnetization time to optimize dynamic load response.

A switching power converter regulates direct battery charging by communicating output voltage and current limits between primary and secondary controllers.

A bridgeless power factor correction circuit manages bidirectional current paths through electronic switching devices to charge output capacitors.

Clock-controlled switching frequency resolves bandwidth limits in traditional hysteretic converters by using a ramp voltage to synchronize phase response.

A voltage converter system estimates transformer leakage inductance to determine load-dependent timing delays for optimized switching control.

Segmented capacitance and induction circuits suppress harmonic distortion, resolving the trade-off between power supply capability and conversion efficiency.

An adjusting circuit modifies hysteresis thresholds using detected burst signal duty cycle to resolve primary side regulation errors in flyback converters.

Offset comparator monitors soft-start voltage against feedback voltage plus offset to identify ground faults during initial power-up phases.

Dual voltage and current feedback signals dynamically adjust PWM duty cycles, reducing circuit losses and component temperatures under varying load conditions.

A high-frequency power supply uses a constant-current conversion circuit to stabilize drive signals for plasma loads.

Segmenting blocking voltage across multiple series switches reduces capacitance and switching losses, enabling high-frequency operation in compact LED drivers.

A trans-inductor voltage regulator circuit reduces output voltage ripple through dynamic on-time period control.

Fundamental frequency switching of top switches reduces switching losses and improves power conversion efficiency.

Integrating over-current detection into the phase pin reduces PWM controller chip packaging area while maintaining reliable power conversion.

Opposite polarity parallel inductors boost total inductance to handle high current demands without increasing power supply volume.

A driver circuit maintains supply voltage stability using a switched-mode converter and controlled transistor switching.

A current-sense circuit generates proportional sense currents using matched FETs to measure bi-directional load currents.

A power supply apparatus bypasses input power when voltage levels fall within a reference range to maintain high conversion efficiency.

Opposite winding directions on adjacent pillars cancel common mode currents, reducing electromagnetic interference in high-frequency resonant converters.

A comparator-based control circuit regulates switching power supply output voltage using a constant voltage source reference.

Control method detects inductor current reversal to enable zero-voltage switching, reducing circuit losses.

A capacitor discharge device inside an MMC submodule uses dynamic resistance switching to rapidly remove stored energy.

Shared pulse generator and multiplexer reduce secondary-side circuit area while preventing simultaneous switching in LLC converters.

A rectifying element pairs a MOS transistor with a Schottky diode to lower conduction losses in power circuits.

A switched-tank converter power supply system modulates intermediate voltage levels to reduce line loss in mobile devices.

Primary side power detection enables zero voltage switching in a DC-DC converter, eliminating secondary side circuits and reducing control complexity.

A switched mode power supply controller monitors input voltage rate of change and drop to detect true valleys.

A zero current detector monitors inductor node voltage to control switch timing.

A variable inductor adjusts inductance based on current to enable zero voltage switching at light loads.

A current detection circuit samples and holds inductor current peaks and valleys using capacitors during low side switch operation.

A power converter package mounts semiconductor dies, inductors, and capacitors directly onto a lead frame substrate.

Staggered gate drive signals from a timing control circuit prevent cross conduction and current spikes in DC-DC converter synchronous rectifiers.

Cascaded resonant switched-capacitor converter architecture eliminates charge distribution loss through flying capacitor resonance.

Embedding feedback in PWM signals eliminates dedicated isolation channels, reducing silicon footprint and component count.

A switch control circuit linearly adjusts power switch frequency using output detection voltage to maintain efficient operation across varying load conditions.

A synchronous rectifier control circuit adjusts MOS transistor turn-on and turn-off timing using dual sense circuits to optimize gate drive signals.

A system controller generates gate drive signals to turn on or off a transistor in a power conversion circuit.

Quadratic modeling of cable reactive components reduces memory and processing power while maintaining measurement precision.

Double T control reduces shoot-through problems and switching losses to improve high-frequency circuit reliability.

Laminated bus structure intercepts electric field stress via intermediary ground planes, reducing parasitic inductance and EMI during high-speed switching.

Zero-crossing detection enables soft-switching transitions between quasi-resonant and continuous-conduction modes, eliminating switching losses and audio noise.

Time-delayed submodule voltage switching within sampling intervals minimizes excitation of passive frequency filter resonance points in multilevel converters.

A zero-current crossing detection circuit uses a differential amplifier to amplify voltage differences across an inductor.

A switching power source sets the OFF-period according to the transformer resonance cycle to minimize audible beat sounds.

A phase lock circuit enables switching device turn-on during valley voltage to minimize losses.