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.