Efficient Power Electronics Conversion TRIZ Cases

A floating head switch uses an NMOS transistor and flying capacitor to maintain constant gate-to-source voltage.

A field regulator applies DC bias current to an inductor coil, dynamically adjusting its inductance within a resonant circuit.

A power factor corrector circuit adjusts switching frequency to maintain optimal operation across varying load conditions.

A wireless power transmitter circuit adjusts variable capacitor impedance to maintain constant coil current.

A power supply device uses a driving module to conduct a second switch for voltage diversion.

Dynamic duty cycle adjustment balances output voltages across parallel converters, eliminating potential differences and simplifying current sensing.

A pulse width modulator uses a transient detector to asynchronously reset the sawtooth voltage generator.

Multi-phase impedance enables capacitor precharging in zero-load states, resolving voltage regulation failures during series connection.

SR control circuit detects drain voltage to generate duty cycle signals that turn off the transistor before primary switch activation.

Switching regulator circuit adjusts off-time to save energy under light load conditions.

A resonant circuit uses switched capacitors to tune the oscillating frequency for inductive energy transmission.

Irregular charge pump operation randomizes the RF emission spectrum and creates targeted nulls to mitigate electromagnetic interference.

A DC-DC voltage converter implements a pulse-skip operational mode using a current comparator to selectively disable transistors.

Pulse gating control stabilizes output voltage accuracy and reduces AC ripple in switching converters during power-save operation.

A power factor correction circuit bypasses stored feedback signals via a transient detector to accelerate output voltage regulation.

Multi-phase voltage regulator module rotates active phase circuits to balance device lifespan and reduce power waste at light loads.

Slope compensation stabilizes the control loop in current-mode switching regulators, suppressing sub-harmonic oscillations at duty ratios above 50%.

A semiconductor insulation film employs a lamination structure of silicon nitride layers to suppress current collapse while maintaining high breakdown voltage.

Transistor-based conversion replaces lossy diode bridges, enabling startup at voltages below 0.5V while reducing power dissipation.

Discontinuous mode multiphase flyback converters eliminate separate power factor correction stages, reducing electromagnetic interference and component count.

A waveform detection circuit monitors transformer winding signals to identify load device connection states even when the power storage component is depleted.

A power supply circuit uses controlled burst mode to maintain primary side controller voltage via auxiliary winding energy transfer.

Symmetrical serial capacitors slow common mode voltage variations to suppress radiation emissions and improve electromagnetic interference performance.

Resonant switching eliminates turn-off losses and reduces magnetic size while achieving large voltage conversion ratios.

A bridgeless AC-DC converter uses a single return path resistor for cycle-by-cycle current measurement, eliminating expensive floating sensors.

Zero current detection circuits adjust individual rectifier switch on-times to resolve parallel current sharing and efficiency trade-offs.

Skip mode control circuit extends lower switch on-time to charge resonant capacitor before resuming asymmetric switching.

A switching element driver circuit uses pulse frequency encoding to control multiple elements via a single optic fiber.

A GaN HEMT structure uses carbon doping in the electron supply layer to cancel magnesium acceptors and define a normally-off state.

Secondary side control circuit selects power source for synchronous rectifier switch signal generation.

A zero-current sense apparatus monitors inductor current to adjust the switching threshold dynamically.

A hybrid I-T multi-level converter uses a switching circuit to direct current through selected branches.

A switching system adjusts signal timing based on measured delay to align with zero crossings.

An active damper varies resistance to suppress voltage and current ringing, resolving stability issues in large resonant capacitor designs.

Depletion-mode gallium nitride transistors in a buck converter require protection circuitry to prevent short circuits during unpowered startup states.

A current resonance type DC-DC converter adjusts switching element duty ratios to control output voltage.

Integrating bridgeless PFC and auxiliary path LLC control circuits into one chip reduces the power supply board area and production costs for OLED televisions.

A power converter circuit outputs reactive power based on voltage deviation to stabilize grid fluctuations.

A silicon carbide trench device uses an impurity region to reduce potential drop and dielectric breakdown during high-speed switching.

Adjusting sleep time maintains constant output power during burst mode, reducing energy dissipation and acoustic noise under light load conditions.

A control circuit switches between two regulator circuits based on load current levels, reducing wasteful energy usage during sleep times.

A resonant converter control device detects load current signs to dynamically adjust transistor switching periods.

A buck-boost converter uses a secondary circuit to scale inductive current for precise zero voltage switching detection.

A power supply apparatus uses a conversion element and switch to detect AC voltage.

Current detection via a Hall-effect switch drives MOSFET gates, reducing power loss and heat generation in high-current applications.

A control device modulates pulse-width signals to throttle output current and voltage of a synchronous rectifier.

A flyback converter uses a delay device to induce a transient that turns off the secondary switch before primary activation.

A physical power converter topology samples switch voltages to inject feedback into gate drivers, slowing the negative voltage slope during switching transitions.

Auxiliary circuit discharges parasitic capacitors during dead time to reduce switching loss and improve conversion efficiency.