Efficient Power Electronics Conversion TRIZ Cases

A driver circuit with a rise time control mechanism optimizes the switching output voltage transition speed.

A voltage polarity detection circuit uses a dynamic current mirror and auto-zero comparator to store and compare conduction voltages.

A PWM controlling apparatus uses a valley detector to sample auxiliary winding voltage before resonance distorts the signal.

A starting control circuit prolongs switching transistor OFF time during converter startup to suppress secondary side surge noise.

A flyback power converter adjusts its output voltage during low load conditions to minimize energy waste in feedback circuits.

A CLL resonant circuit enables zero-voltage switching in DC-DC converters to minimize power semiconductor losses.

Segmented converter modules with periodic phase shifts reduce peak stress and energy loss during power conversion.

A controller uses valley detection and pulse frequency modulation to precisely time primary and secondary switches in isolated converters.

Segmented parallel inductors reduce switching losses in LLC converters by enabling zero voltage switching for higher efficiency.

Dynamic frequency adjustment reduces switching loss and thermal stress on inductors during high frequency load transients.

Integrating a current sensor inside the holder portion range prevents horizontal dimension expansion in constrained vehicle spaces.

Segmentation of converter cells and mode-switching of the filter cell reduces power conversion losses while managing system complexity.

A power supply control unit generates a second signal outside the feedback loop to superimpose an AC component for impedance measurement.

A controller manages bidirectional current flow in an unfolding inverter to regulate reactive power and maintain grid synchronization.

Secondary side microprocessor adjusts maximum on-time based on diode conduction time to minimize power losses from manufacturing tolerances.

A power supply control circuit dynamically switches a low drop out regulator to maintain zero quiescent current during steady states.

Alternating switching scheme reduces transistor switch-off time to prevent voltage spikes during mid-power operation.

Detecting voltage spikes across the output capacitor enables timely synchronous rectifier turn-off, eliminating simultaneous conduction with the primary switch.

A control system determines capacitor current and voltage to dynamically adjust the switching duty cycle of a DC to DC converter.

A flyback power supply apparatus adjusts switching frequency to minimize transformer vibration noise.

Parallel silicon carbide diodes with thermal composites prevent failure from Joule heating in high-power converters.

Series-connecting input terminals of parallel resonant converters enables automatic current balancing, reducing AC ripple and minimizing output filter volume.

Capacitor sensing monitors voltage across the capacitor to control synchronous rectification bridge FETs.

Master control circuit monitors bulk capacitor health by comparing voltage and power changes against thresholds to identify aging before efficiency degrades.

Multi-phase controller selects drive channels based on current values to resolve slow transient response and beat frequency noise in power supplies.

A control circuit manages synchronous rectifier gate voltage using resistor-capacitor delay to reduce body diode conduction.

Resonant half-bridge converter achieves zero-voltage switching to reduce switching losses and improve power density across load conditions.

A modular multilevel converter control method stops cell switching during peak voltage intervals to reduce unnecessary switching events.

A charge pump circuit uses a control circuit to manage load switch timing and transfer pumping voltages.

A multistring inverter controller determines string configurations by comparing partial powers flowing through individual DC/DC converters.

Inversely coupled windings in an interleaved LLC converter balance current sharing, resolving unbalance caused by resonant parameter tolerances.

A control circuit generates signals for synchronous rectification transistors based on transformer voltage and output levels.

A current feedback charge pump circuit replaces operational amplifiers with a MOS transistor and bias network to reduce area.

A non-isolated DC-DC converter uses cross-connected capacitors to enable bi-directional power transfer via zero voltage switching.

A switching mode power supply uses dual switches to control a snubber circuit state based on operational thresholds.

A control device modulates switching frequency using a high-frequency signal to scatter electromagnetic interference emissions.

Segmented boosting choppers share one sensor to equalize currents, resolving insufficient inverter voltage at high speeds while reducing component complexity.

Adjusts dead-time to equalize output currents between interleaved LLC power converters despite component tolerances.

A boost regulator modulates current limit references to maintain stable output voltage ripple during pulse frequency operation.

Time-varying capacitance introduces frequency jitter to a power converter switching frequency.

A synchronous rectifier controller adjusts a reference threshold level to compensate for delays and offsets in low ohmic MOSFETs.

Dual inductor buck controller regulates floating LED voltage, eliminating EMI from mode transitions.

A resonant amplifier circuit uses inductive and capacitive elements to achieve high gain operation.

A MOSFET circuit with a parallel diode module dynamically adjusts conduction paths to manage current distribution.

A DC-DC converting controller adjusts threshold voltage dynamically to improve zero-current detection accuracy.

A voltage control apparatus superimposes inductor current signals on feedback loops to stabilize output waveforms.

A high-side driving circuit uses a latch stabilization mechanism to select and fix circuit nodes, reducing power consumption.

A SiC MOSFET test method uses pre and post irradiation annealing to measure threshold voltage shifts.