Efficient Power Electronics Conversion TRIZ Cases

Auxiliary circuit couples to main DC-DC converter only when input voltage exceeds a predetermined range.

An LCL tank in a quasi-resonant switching power supply filters harmonic noise, resolving the trade-off between low noise and fast responsiveness.

Segmenting power conversion across multiple parallel channels with differentiated switching frequencies cancels ripple, reducing EMI filter size.

Segmented L-core magnetic device enables direct winding formation without a bobbin, reducing board space and manufacturing time in power converters.

Phase shift modulation controls switch conduction overlap to adjust output voltage, eliminating separate power supplies for lasers with distinct requirements.

A switching power supply reduces converter frequency to minimize energy loss during light load conditions.

A series resonant converter uses a transfer function to set average output current based on intermediate circuit voltage and switching period.

A discrete-time current sense circuit samples communication protocol current using periodic switching to generate accurate sensing signals.

An integrated circuit regulates output voltage to one-third of nominal levels using transistor switching to maintain LED functionality.

A flyback converter control device integrates output voltage to determine negative magnetizing current amplitude and adjusts an auxiliary switch.

Active clamp unit discharges parasitic body capacitance before main switching, reducing turn-on loss and enabling higher working frequencies.

Galvanic isolation in the analog control circuit eliminates neutral terminal connections, reducing device complexity and software certification requirements.

Controller enables power factor correction stage based on average switching frequency thresholds.

Phase difference adjusting portion modifies second signal output timing to synchronize rectification switch device activation with main switch device state.

A power converter controller detects faults by counting request pulses generated by an error amplifier.

A resonant power supply uses a series capacitor to cancel stray inductance, reducing peak currents and improving power factor.

A transition capacitor absorbs leakage inductance energy to lower primary-side voltage, reducing ringing and voltage spikes caused by large load currents.

A control circuit processes inductor voltage signals through analog comparators to generate precise PWM triggers.

A power supply circuit generates sinusoidal AC voltage to restore photovoltaic cell performance.

Controller adjusts switch frequency and phase angle differences to enable smooth operation direction switching in bidirectional resonant CLLC circuits.

Dynamic capacitance modulation spreads switching frequencies to reduce electromagnetic interference.

A control circuit manages power delivery by switching between buck and boost modes based on detected input current levels.

Detecting circuit identifies active phases in a multi-phase boost converter, preventing PWM controllers from driving transistors for phases lacking inductors.

A timing capacitor charges with constant currents to trigger precise sampling of inductor current at the low-side switch midpoint.

Dual ramp signal generators compensate feedback and reference signals to stabilize output voltage across varying ESR conditions.

A single resonant inductor connects to multiple switching circuits, resolving non-uniform resonance and reducing switching loss.

Segmented transformer taps enable two-level DC output adjustment via one switch, reducing power loss and complexity compared to bidirectional blocking switches.

Periodic current transfer disperses heat across segmented semiconductor groups, resolving uneven thermal distribution in bridge rectifier circuits.

A power converter uses a zero current detect signal to enter light load mode for improved efficiency.

A semiconductor unit positions main circuit terminals on opposing sealing body sides to minimize parasitic inductance.

Segmented ISOP converters separate regulated and unregulated paths, resolving the trade-off between wide voltage range and high efficiency.

Iterative digital control equalizes phase currents to resolve uneven distribution caused by component variations.

A DC-DC converter transformer uses four series-connected secondary windings wound in opposite directions to split currents and reduce copper loss.

Series-connected converter units switch dynamically between topologies, allowing individual module shutdown during partial load operation.

A reverse current preventing circuit adjusts reference signals based on inductor current to maintain converter efficiency.

A switch control circuit adjusts gate on-time via a current compensation device to correct load current errors in buck converters.

A power factor correction system generates sinusoidal reference signals using dynamic frequency tracking and angle adjustment modules.

Clustering current pulses at the start of a time period minimizes switching node ringing and reduces power losses in battery-powered applications.

A switching power supply device adjusts the FET turn-ON time to manage transformer resonance and lower vibration noise.

A switching regulator transitions from discontinuous to continuous mode upon detecting output voltage drops.

A resonant capacitor changeover circuit adjusts capacitance to maintain stable output voltage control across varying input conditions.

A resonant converter divides control signals into alternating time periods to maintain switching frequency near resonance.

A control apparatus manages switch timing in a boost-inverting converter to enable continuous mode operation.

A variable switching frequency switched tank converter adjusts its operating rate to match real-time load conditions.

A modulator detects loading changes in a switching power supply and adjusts the driver voltage via a linear regulator to reduce switching losses at light loads.

Modular three-level bridge arms in solid state transformer power apparatus simplify circuit design, reduce volume, and achieve voltage equalization.

Parallel SiC and Si MOSFETs switch based on auxiliary voltage levels, reducing switching losses during standby mode while maintaining heavy-load efficiency.

Charge delivery circuitry selectively provides charging current to a boost capacitor, preventing depletion during discontinuous conduction modes.

A flyback converter samples drain-to-source voltage to generate logic signals for precise switch cut-off timing.

A boost regulator uses adaptive dead time to control the high side switch across asynchronous, synchronous, and adaptive modes.