Efficient Power Electronics Conversion TRIZ Cases

Wide bandgap FET switching above 100 kHz cuts heat loss and shrinks passive components in battery-powered power converters.

Alternating switching combinations with out-of-phase control cancel AC currents, cutting ripple, capacitor count, module size, and AC loss.

Alternating switch states and diode-guided current paths enable precise overcurrent detection and load protection in low-power buck-boost operation.

A secondary controllable current path fine-tunes DC-DC output current beyond PWM pulse limits, improving low-level resolution without complex control.

Zero-crossing timing of inductor current enables sensorless converter control, easing high-frequency response demands and reducing hardware cost.

Phase feedback adjusts converter cycle timing to hold 180-degree interleaving despite input ripple, cutting ripple and improving PFC.

By regulating peak modulation to a target value, this case cuts converter energy storage, electrical losses, and voltage stress.

A matrix converter with inductive energy storage and model predictive control replaces failure-prone capacitors while mitigating harmonics.

Delayed gate-drive timing across parallel transistor cells damps switching-node ringing and voltage spikes without adding cost or loss.

Feedback shifts PFC switch-on timing between voltage valleys in LED DCM converters to keep regulation stable and prevent visible flicker.

A switchable bias circuit stabilizes level shifting under ground voltage fluctuation while avoiding unnecessary power use in standby.

Periodic synchronous rectifier turn-on keeps light-load switching above the audible range, suppressing power supply noise without wasting efficiency.

An integrating and comparator-based control circuit filters node-voltage oscillation to prevent false synchronous rectifier switching and stabilize output voltage.

Filtered output-voltage sensing adjusts inductor current slope to suppress converter overshoot without enlarging the output capacitor.

A passive RC sensing network measures resonant tank current on high or low sides without resistor path losses, simplifying converter control.

A transconductance-based control circuit adjusts PFC output voltage to input and resonant converter output, improving power factor and efficiency.

An auxiliary switch-capacitor circuit recycles leakage inductance energy to sustain ZVS in flyback converters across a wide input voltage range.

An MPPT converter switches to reverse boost mode to quickly drain inverter input capacitors through PV modules during shutdown.

Direct complementary switching between piezoelectric assemblies improves resonant voltage control and blocks common-mode voltage injection.

Switch-controlled resonant modules vary output voltage gain without changing circuit topology, improving converter applicability.

Dynamic phase timing and pulse-skipping keep a resonant switched-capacitor converter efficient at low load while stabilizing output voltage.

A threshold-based switch from resonant to higher regulated frequency keeps charge pump output voltage safe at high input levels.

Combining primary indirect sensing with secondary direct feedback improves output-voltage accuracy, response speed, and circuit simplicity.

Per-switch current sensing and digital closed-loop control raise CrCM boost switching frequency while improving over-current protection.

Back-to-back clamp transistors and loop regulation stabilize converter voltages while lowering transistor withstand voltage and cost.

Driver current is adjusted from input voltage and current changes to limit peak voltage, reduce switch stress, and preserve efficiency.

Temperature-based duty control adjusts main and auxiliary switches to preserve zero-voltage switching and cut hard-switching losses.

Additional synchronous switches let a PFC converter isolate faults and reconfigure as a full-bridge stage to keep power conversion running.

A switched snubber capacitor cuts DAB turn-off losses and EMI at high current while preserving zero-voltage switching.

A single sensing resistor and detection circuit replaces multiple current monitors in a totem-pole PFC, cutting circuit size and installation cost.

An LC resonant tank enables zero-voltage switching in a totem-pole PFC, cutting switching loss, heat, surges, and magnetic size.

Wide bandgap synchronous rectification cuts PFC losses by switching rapidly between CCM, DCM, and QR under changing loads.

Alternating duty ratios in diagonal secondary half-bridges widen voltage boosting while reducing turn-off loss and balancing switch stress.

Time-based switching duration checks and current sensing improve LED connection detection while preserving output current accuracy.

Weighted control of pulse width and drive voltage cuts RF radiated noise while maintaining output voltage stability under load or set-voltage jitter.

A resonant inductor-capacitor path enables ZVS and ZCS in a switched capacitor balancer, cutting switching losses at high frequency.

Shared magnetic paths let multiple converter stages use one transformer structure, shrinking high-voltage DC conversion while limiting cross-currents.

Zero-crossing line-frequency detection and reactive-current compensation improve SMPS input current and power measurement without external metering.

Modular switching networks and regulating circuits raise conversion ratio with fewer capacitors and switches while cutting charging loss.

Switchable current sources charge and balance boot and fly capacitors, enabling faster startup, standby shutdown, and low-loss restart.

An auxiliary winding detects low output voltage and bypasses PFC operation, cutting standby power in low-power USB PD chargers.

Variable-frequency resonance control ignites and sustains atmospheric plasma while limiting current surges during impedance transition.

Automatic switching between resonant and flyback modes improves low-voltage and light-load efficiency while preserving wide output range.

Voltage-threshold detection turns off totem-pole PFC switches during polarity reversal or switch errors to prevent excessive current damage.

A delayed single turn-on strategy cuts bootstrap capacitor power use in totem-pole PFC circuits while preserving complete inductor discharge.

Input-voltage and resonant-current sensing set high-side switch timing to improve power factor correction in LED resonant half-bridge converters.

By swapping leading and lagging legs by load level, this controller maintains soft switching from light to heavy load while reducing primary-side loss.

Predictive switch control in a synchronous buck circuit limits impulse current and output overshoot during CCM-DCM load transitions.

Delayed control of two series switches cuts diode-related conduction loss and avoids reverse recovery in soft-switching current source converters.

A voltage-dependent high-side turn-off threshold cuts dead time and switching loss in flyback converters across varying input conditions.