Efficient Power Electronics Conversion TRIZ Cases

A switching circuit suppresses electromagnetic interference by applying low frequency modulation within its feedback loop.

Parallel inductor and LED monitor capacitor ESR changes to warn of impending failure without adding complex control logic.

A control device measures body diode conduction time in switching converter transistors to adjust drive signals.

A switching power-supply device uses a transient state detection circuit to delay gate voltage charging speed during soft-drive operations.

A semiconductor switch uses a capacitor to enable bidirectional current and voltage blocking across discrete transistors.

Clamping voltage across resonant capacitors prevents hard-switching during transients, reducing power loss and extending MOSFET lifespan.

A waveform shaping circuit limits negative gate voltage using parallel RC networks and Zener diodes to protect sensitive semiconductor devices.

Dynamic overvoltage threshold control adjusts voltage limits based on pulse width.

A switching regulator employs hybrid mode control to enhance dynamic performance and noise immunity across varying load conditions.

A gate drive circuit recovers charge from input capacitance via a series recovery circuit, reducing conduction loss while preventing voltage breakdown.

A resonant converter short circuits the secondary winding before primary switch transitions to ensure zero voltage switching.

A slew rate control module modifies inverter driver speed based on load magnitude and mode configuration.

Extending the switching period beyond the resonance period reduces magnetization losses and damping losses while maintaining soft switching capability.

Cascaded capacitive and inductive stages reduce component count, resolving power density limits from large passive components.

Monitoring resonant intervals allows the controller to trigger the high side switch at peak voltage, reducing switching losses in buck converters.

Segmenting voltage blocking across MOSFETs with varying breakdown voltages lowers RDSon and conduction losses compared to single high-voltage devices.

A stand-by control circuit manages an energy storage unit to power a microprocessor during idle periods.

A passive lossless snubber uses a resonant inductor and capacitor to manage switching transitions in boost converters.

Multi-leg transformer merges DC magnetic fluxes at the center leg while canceling AC fluxes, reducing component volume and core loss.

A bias control circuit selectively energizes a ballast regulator using remote enable signals.

A buck-boost converter uses a dedicated low-voltage switch to reduce switching losses during operation.

A bidirectional load-relieving circuit enables voltage-free switching of the main inverter switch to minimize auxiliary voltage requirements.

Serial switched mode converters replace large reservoir capacitors to reduce ripple and standby power consumption in AC/DC power supplies.

Internal paralleled active neutral point clamped converter uses logic-based flying capacitor voltage balancing for modular power conversion.

Primary-side sensing and injection modulation regulate LED current while correcting power factor without secondary feedback components.

Controller adjusts on-time duration based on demagnetization detection to prevent premature switching and reduce heat generation in power converters.

A DC/DC converter control method stabilizes output voltage across varying input conditions by adjusting switch frequency or duty cycle within predetermined ranges.

A dual signal path approach generates compensation zeros using lowpass and bandpass filters within PWM comparators.

A modular DC-DC converter architecture segments voltage conversion across multiple units to reduce AC losses and component stress.

A DC-DC converter uses a back gate control circuit to adjust transistor threshold voltage based on output power levels.

A DC/DC converter uses a voltage-variable varactor to passively tune resonant frequency and accelerate drain-source voltage downswing.

Dynamic dead-time adjustment based on tank voltage and load conditions reduces hard-switching losses in resonant inverters.

Dynamic duty cycle adjustment minimizes biasing and ripple currents in asymmetric DC-DC converters, resolving efficiency losses under varying load conditions.

A switching power supply detects load states using peak or effective resonance voltage values from the inductor.

Segmented capacitors in a power converter reduce response time during mode transitions by eliminating large capacitance delays.

A hybrid switched capacitor converter uses a diode ladder circuit to achieve high voltage gain in compact power systems.

A single-stage DC/AC inverter topology merges voltage boosting and inversion functions into one circuit block.

Segmented P terminals eliminate common impedance paths that cause oscillation and noise during high-speed switching in power modules.

A switched mode power supply uses bias signal timing to control switching circuitry turn-off intervals.

Auxiliary inductor generates source and sink currents to detect over-voltage, reducing power consumption and preventing bulk capacitor explosions.

Digital UVLO circuits reduce power consumption by gating current paths during non-detection periods while maintaining reliable under-voltage protection.

An integrator derives capacitor voltage from primary current to reduce sensing pins and noise interference in high frequency resonant converters.

Discontinuous frequency modulation reduces harmonic emissions below 150 KHz without increasing magnetic component size or compromising converter efficiency.

Segmenting output capacitors reduces voltage ripple without increasing device size or complexity.

A series resonator DC-to-DC converter uses a resonant tank to enable zero-voltage and zero-current switching for high efficiency.

Rescaling PWM reference signals via DC bus voltage feedback reduces third-order harmonic distortion in aerospace rectifiers.

An integrated circuit generates drive signals to control a transistor while monitoring elapsed time for accurate short-circuit detection.

A ZVS control circuit synchronizes power transistor switching with transformer demagnetization using a secondary side generated pulse.

Single-turn windings reduce magnetizing inductance and core losses, enabling efficient communication without high power consumption.

A shut-down circuit monitors bias voltage to stop switching operation when levels drop below a set threshold.