Efficient Power Electronics Conversion TRIZ Cases

Dynamic ramp signals in a dual-edge modulation controller eliminate turn-on and turn-off delays, preventing voltage spikes during fast CPU load transitions.

Auxiliary switch generates saturation feedback signal responsive to gate voltage, differentiating short circuit faults from gate driver failures.

A rectifier gate driving circuit adjusts transistor conductivity via logic and comparison circuits to manage electrical flow.

A Class-E resonant circuit provides galvanic isolation through capacitive coupling without a transformer.

Comparator-based bias circuit selects appropriate voltage levels to reduce power dissipation losses across multiple output voltages.

A single control circuit drives multiple secondary synchronous rectifier MOSFETs in a multi-output flyback converter topology.

An intermediary capacitor buffers switching noise from a switched-mode converter, enhancing measurement accuracy for sensitive circuits.

A secondary-side controller manages a rectifier switch using detection winding signals to minimize power consumption in flyback converters.

A DC to AC power converter controller phase shifts multiple input signals to reduce ripple currents and improve conversion efficiency.

Regulator circuit generates bias voltage for synchronous rectifier controller, enabling operation during constant current mode.

A logic control circuit adjusts switching transistor duty cycles in a full-bridge power source to maintain symmetric bridge arm operation.

A commutation current steering method controls synchronous rectifier switches to induce boosting resonance in zero volt switching power converters.

A DC voltage conversion circuit uses magnetic flux cancellation to reduce ripple current in the inductor.

Auxiliary phase operates in pulse frequency modulation mode to supply power, resolving poor efficiency caused by large power components and low inductance.

Triangular modulation and an asymmetric secondary circuit reduce switching losses in EV chargers while simplifying control complexity.

A power supply control circuit generates a voltage sample signal from an auxiliary winding to enable accurate primary side regulation.

Predicted timing control in a flyback converter recycles leakage inductance energy, solving efficiency losses at light and heavy loads.

A battery heating device uses LC resonance to amplify reactor current ripple for efficient temperature elevation.

A buck-boost converter uses voltage detection to dynamically adjust switching frequency for optimized transistor conduction.

A DC-DC converter uses a pseudo ripple generation circuit to create artificial voltage signals for stable switching element control.

A synchronous rectification step-down DC/DC converter controller adjusts driving phases and gate voltage amplitude based on load current.

An active negative current modulation circuit detects reverse inductor current and maintains the low-side switch in linear mode.

Variable phase shift control maintains soft switching across full duty cycles, eliminating hard switching losses and reducing magnetic component size.

Alternating isolated DC-DC converter units reduces fixed losses and minimizes size by balancing capacitor voltages during light load conditions.

A power supply circuit uses a switch to transition from standby to main voltage for control operation.

A synchronization rectifier controller detects demagnetization periods to adjust drive signal duration for stable switching.

A power control device detects switching voltage variations to generate precise on-signals for LLC resonant converter elements.

A DC/DC converter synchronizes duty cycle signals with detection circuits to rapidly identify input voltage transients.

Segmenting the resonant inductor into identical windings cancels capacitive currents to minimize common mode noise.

Voltage-based detection eliminates current sensors to resolve complexity trade-offs while maintaining accurate zero-current switching.

Shunt switches bypass reverse currents in totem-pole PFC circuits, preventing transformer damage and reducing magnetic component costs.

A reconfigurable switched-capacitor circuit dynamically adjusts conversion ratios to maintain regulation across varying loads.

A III-nitride power conversion circuit uses segmented transistors and selector circuits to control current flow.

A non-isolated three-phase power converter transforms alternating current into direct current using a single-stage half-wave rectification process.

A buck-boost switching regulator uses constant OFF and ON time intervals to control power switches independently.

Pre-magnetizing a flyback transformer stabilizes switching frequency and reduces losses.

Auxiliary switch circuit prevents self-excited oscillation voltage spikes by turning off the commutation switch when the main switch stops.

A soft-start circuit controls switching of main and synchronous rectifying transistors to stabilize output voltage during start-up.

A self-excitation synchronous rectification driver uses a latch unit to alternately turn on rectifier switches.

Replacing bulky three-winding transformers with a two-winding circuit reduces volume and cost while maintaining galvanic isolation in three-phase resonant DC-DC converters.

Valley skipping mode drives synchronous rectifiers during resonant voltage valleys to enable zero-voltage switching across wide input voltage ranges.

Segmenting power converters into parallel arrays maintains high efficiency at partial loads by deactivating unused units.

A linear LED lamp uses a shared current sensing device to detect electric shock currents flowing through the arrays.

A resonant LLC PFC pre-regulator modulates output voltage via feedback to control gate switching.

A management circuit activates a pulse width modulation controller before a power factor correction controller to enable low power operation.

A power converter controller adjusts gate signal frequency via a compensation resistor to eliminate acoustic noise.

A flyback switching power supply adjusts its working frequency via a dedicated frequency adjustment circuit connected to the PWM controller.

Simultaneous low-side branch current measurement calculates phase currents without switching synchronization, eliminating noise errors and sensor offsets.

Negative current clocking discharges excess voltage in buck power supplies using dynamic NMOS control.