Efficient Power Electronics Conversion TRIZ Cases

A magnetic filter separates adiabatic inter-capacitor charge transfer from voltage regulation to cut die area and power loss in DC-DC converters.

Current-based voltage correction offsets feedback delay in a resonant converter, improving switch timing and reducing overshoot.

Primary current sensing lets the controller detect zero secondary current and turn off LLC rectifiers with lower switching and measurement losses.

Additional phase shifts center-align totem-pole midpoint voltages, doubling ripple frequency and shrinking PFC inductors and EMI filters.

A flyback control chip drives an LLC resonant circuit with charge pump and feedback stages to cut controller cost and board space.

An auxiliary switch discharges the main transistor’s parasitic capacitor before mode changes, cutting switching loss in BCM/DCM power supplies.

Fixed on-time and frequency control keep a resonant push-pull converter in soft switching, cutting losses, surge voltage, and EMI.

Pre-discharging the filter capacitor before zero-cross startup cuts switching power supply noise caused by high clamped input voltage.

An N-type carrier injection layer in a super-junction IGBT lowers on-state voltage drop while supporting higher current density.

Dynamic half-bridge and full-bridge control lets an LLC converter deliver multiple output voltages with higher efficiency and smaller capacitors.

A voltage-based mode switch lets the power supply IC stop generating driver voltage at no load, cutting standby power without losing transistor drive control.

A boost PFC circuit sets Ton from process-matched parameters to preserve Ton-Toff linearity and improve power delivery efficiency.

A three-switch bridge arm with cross-connected capacitors steps down high supply voltage, enabling smaller, denser, and more efficient voltage regulation modules.

Staggered-phase isolated SMPS branches raise output power while reducing EMI, output ripple, transformer size, and capacitance needs.

Phase-staggered PWM across multiple transformers cuts output ripple and EMI while improving thermal balance, safety, and efficiency.

By tuning switching frequency to match output current, the converter maintains zero-voltage turn-on and avoids voltage reversal over a wide range.

Dynamic slow-leg duty control follows AC phase shifts to prevent current cut-off in bidirectional Totem-Pole PFC operation.

Variable dead-zone phase-shift control keeps a resonant converter in zero-voltage switching across a wide voltage range, cutting losses and switch stress.

A shared switch network lets charge-pump PFC and resonant conversion run independently, cutting conducted EMI, switching loss, and passive size.

External A/V device data guides CDN bandwidth allocation so low-resolution clients do not overconsume capacity and cause congestion.

Adaptive current sensing removes overtones in PFC converters, enabling constant-frequency control with lower loss, switching noise, and EMI.

Dynamic voltage thresholds based on switch-to-zero-crossing delay help a resonant converter avoid capacitive mode and stay stable at high power.

Clamping diodes replace software short-circuit protection in a three-phase resonant DC-DC converter, improving reliability and response.

Dynamic dead-time adjustment from output voltage error suppresses resonant converter gain and prevents overshoot-driven shutdowns.

Dynamic voltage thresholds and power reduction logic help a resonant converter recover from asymmetrical hangup during mode switching.

An adaptive slew rate threshold uses switch off-time to block DCM ringing mis-triggers in synchronous flyback rectifiers.

Dynamic current-based threshold control eases resonant converters from current to voltage mode while avoiding asymmetrical hangups and capacitive limits.

Clamping diodes protect resonant capacitors and switches during short circuits, avoiding complex software protection and extra transformers.

Distributed-output multi-cell converter cells and PCB magnetic paths cut output resistance to deliver high current in tight VLSI power space.

Dead-time timing uses parasitic capacitor charge and inductor current reversal to block parasitic diode conduction and cut switching loss.

Limiting clamping-switch turn-on cycles cuts negative current, core loss, and conduction loss in flyback circuits at low input voltage.

Dynamic voltage thresholds derived from current zero-crossing delay help a resonant converter avoid capacitive mode and stay stable at high power.

By briefly shifting a converter from burst mode to standard mode, the secondary side can accurately infer mains voltage and frequency.

Phase-shifted cascaded half-bridge stages widen converter output range while preserving efficiency and reducing magnetic size and core loss.

Capacitor discharge rate sensing replaces auxiliary windings to regulate synchronous flyback output current more accurately across wide loads.

A booster and charging capacitor sustain IC supply voltage when light-load switching lowers auxiliary-coil voltage, avoiding UVLO reset.

AC power is converted on-package through transformers and rectifiers to feed high-current, low-voltage semiconductor dies with fewer power connections.

A clamp diode and low-pass filter improve overcurrent detection in gate drives, preventing noise-triggered errors over long wiring.

A daisy-chained control circuit scales multiphase converters by adding modular phases while simplifying host control and reducing circuit cost.

Adaptive slew rate detection adjusts rectifier turn-on by switch off-time to avoid DCM ringing mis-triggering and improve efficiency.

Cycle-time feedback stabilizes 180° phase difference in interleaved boost converters, preserving power quality in discontinuous conduction mode.

Output-voltage feedback adjusts switching frequency as resonance shifts, preventing hard switching and preserving converter efficiency.

An inductive branch transfers parasitic-capacitor charge during dead time, cutting switch voltage difference, switching loss, and efficiency loss.

Dynamic valley locking in a quasi-resonant flyback converter limits switching frequency to cut EMI, audio noise, and switching loss.

A common step-up converter drives multiple induction coils, cutting converter count while maintaining controlled heating of aerosol material.

A single-stage T-type buck-boost PFC rectifier maintains near-unity power factor while delivering 50-430 VDC without extra conversion stages.

Soft switching with a transformer-linked inductor widens input voltage range while reducing energy storage volume and loss in power conversion.

Adaptive burst frequency control cuts reactive power loss and output overshoot in light-load current resonant power supplies.

Winding signal threshold counting disables the secondary switch after DCM transients to prevent cross-conduction and improve converter reliability.

Variable gain compensation from the half-bridge switch node keeps PWM duty cycle constant and stabilizes regulated voltage during load transitions.

A current controlled synchronous rectifying drive circuit uses a single secondary winding to detect current signals and shape them into voltage pulses for gate driving.

Buck and boost converters eliminate active clamping circuits to reduce switch stress while maintaining high conversion efficiency across varying input voltages.

Operating a linear transformer in saturation mode delivers peak power while maintaining high input impedance for transient protection.

A power conversion apparatus uses a synchronous rectification control signal to generate compensation current for output voltage regulation.

Pulse-width modulation controls the DC stabilizer to reduce power dissipation and improve efficiency under varying load impedance.

A power conversion device adjusts third electrode voltage to reduce switching losses in parallel modules.

Switching flying capacitors between series and parallel states raises current efficiency above 67%, reducing consumption in low-power memory.

A synchronous step-down converter manages light source current using dual operating modes to stabilize power delivery.

A single stage rectifier circuit couples to a ripple voltage smoothing and holdup circuit for stable DC output.

A power supply regulates line current using feedback voltage derived from comparing reference and sensing voltages.

A light load control circuit selectively latches off synchronous rectification based on gate voltage thresholds to manage power conversion states.

A resonant power converter controller adjusts switch ON and OFF timings based on sensed voltage drops to achieve zero voltage switching.

Parasitic drain-source capacitance detects transformer demagnetization, eliminating extra windings and reducing costs.

Separate resonant tanks act as second harmonic filters to maintain constant efficiency across varying input line voltages.

A neutral-point voltage balance control method for three-level converters using adaptive vector modulation to manage switching sequences.

Auto-adaptive digitally controlled delay prevents negative inductor currents and energy loss without comparator calibration.

A three-terminal capacitor uses its through electrode to detect load power supply current without separate resistors.

A constant on-time switching converter enters sleep mode to increase switching frequency above the audible range.

A gate sense circuit couples directly to the high-side power FET gate using positive feedback loops to accelerate signal propagation.

A high voltage power converter uses control and slave PFC rails to accommodate wide input voltages.

Iterative phase offset control mitigates EMI capacitor reactive current to optimize PFC converter power factor under light load.

A control circuit employs a variable gain conversion stage to suppress transformer ringing and output voltage ripple during light load conditions.

A DC-DC converter alternates operation and stop periods to maintain soft switching conditions at low output levels.

Pattern selection balances load distribution across parallel conversion units, stabilizing control during switching transitions.

A current doubler DC-DC converter uses a reserve capacitor to sustain output voltage during controller-initiated sleep mode.

A conduction-loss reduction circuit biases the n-type MOSFET gate with subthreshold voltage during dead-time to create a weak-inversion current path.

A power supply method detects battery absence to bypass buck conversion and deliver input voltage directly.

A phase-shifted full-bridge DC-DC converter uses dynamic switching control to minimize reverse recovery effects in rectifier components.

Primary-side sensing eliminates costly opto-isolators while maintaining regulation accuracy across wide input voltage ranges and varying loads.

A quasi-resonant inverter segments switching elements to distribute current load and reduce thermal stress on individual components.

Capacitive divider segments input voltage across multiple primary windings, reducing peak current and transformer volume.

A controller adjusts power switch parameters using digital current sensing to regulate output voltage.

A solid-state transformer shifts AC power frequency to 1 kHz–100 kHz using MOSFET switches.

A control unit draws operating voltage from an output-side smoothing capacitor to maintain continuous readiness without separate circuitry.

Integrating the multi-phase inverter and power factor correction circuit on one substrate reduces device complexity and footprint.

An adaptive threshold adjusts dynamically based on feedback signals to reduce power consumption and minimize output ripple in power converters.

A power supply adjusts switching frequency to deliver high transient current to dynamic loads.

A current-driven synchronous rectifying drive circuit incorporates a clamp and energy feedback circuit to manage driving voltage levels.

A power supply controller adjusts switch timing via inductor voltage detection to minimize energy loss during AC input transitions.

A self-driven BJT synchronous rectifier reduces forward voltage drop in buck converters.

A control device corrects voltage command values to equalize output currents between parallel power conversion devices.

A switching power supply circuit uses a cascode element controlled by midpoint potential to drive conduction states efficiently.

A buck DC-DC converter uses sample and hold circuitry to capture output voltage during high side conduction for error correction.

A current sensing apparatus measures up-bridge and down-bridge conduction currents to generate a sensing voltage that adjusts the duty cycle signal.

A bidirectional phase-shifted full bridge converter uses synchronous rectification to manage startup energy transfer.

A hybrid five-level bidirectional DC/DC converter topology segments the primary bridge arm to optimize voltage matching across ultra-wide ranges.

Dynamic duty cycle control lowers working voltage between grounds, shrinking optoelectronic isolator volume and cost.

A voltage conversion circuit adjusts resonant frequency to track switching frequency and maintain zero voltage switching.

A shaping circuit modifies the input voltage waveform to generate a sinusoidal reference signal for the flyback converter controller.