Efficient Power Electronics Conversion TRIZ Cases

An input-proportional offset voltage corrects dead time induced pulse width reduction, suppressing switching frequency fluctuations at high voltages.

Reactor L controls current rise to reduce energy loss and improve power supply efficiency while suppressing spatter.

A primary side controller regulates switching timing using a sensed auxiliary winding voltage to recycle leakage energy and achieve zero voltage switching.

Clamping circuit determines a clamping voltage based on sensed input voltage to prevent output current overshoot and ensure stable start-up.

Programmable integrated circuit auto-calibrates current shunt trip points to verify sense resistor health and ensure precise overcurrent protection.

A signal processor generates phase-differed PWM driving signals for power conversion units.

Dual secondary switch activation achieves zero-voltage switching, reducing power loss and electromagnetic interference while maintaining constant frequency.

An intermediary resistor network stabilizes hysteretic converter output voltage against low ESR instability while maintaining fast load response.

A reference voltage generator uses n-type and p-type heavily doped gate transistors to produce a stable output.

A resonant switching converter uses cyclic voltage control to reduce stress on power transistors.

A dual voltage power converter adjusts its PFC setpoint based on AC input voltage to reduce switching losses across varying voltage levels.

A step-up DC-DC converter uses resonant switching to shape current waveforms for efficient power conversion.

A DCM correction network adjusts PWM pulse on-time and modulation frequency to maintain output voltage regulation across varying loads.

A power converter stage transfers energy between primary and secondary inductances to supply the controller.

A parallel-input series-output flyback converter topology minimizes switching losses in photovoltaic inverters.

A self-oscillating power converter controller manipulates control winding current to optimize switching timing.

A bootstrapped bias capacitor arrangement maintains elevated gate drive voltage for high-side switching transistors.

Segmenting the power stage into independent boost and buck converters eliminates complex full-bridge control ICs, reducing switching loss and device stress.

Zero crossing detection and PWM control manage inrush currents during start-up while eliminating reverse recovery losses from silicon diodes.

A voltage regulator circuit uses MOSFETs to dynamically adjust output impedance for USB power delivery.

A switched capacitor dc-dc converter adjusts switch impedance and activation count via digital control to optimize energy transfer.

Current injection into the auxiliary winding forces zero-current turn-off on secondary switches, eliminating ringing and power dissipation.

Adaptive on-time control of an auxiliary switch induces negative current to achieve optimal zero-voltage switching in power converters.

Integrating a capacitor between input and reference leadframes reduces parasitic influences, minimizing ringing and improving switching speeds.

Adjusting minimum switching frequency based on output voltage reduces droop and enhances stability during rapid load changes.

A variable reactor adjusts inductance to optimize power transfer efficiency in wireless charging systems.

A power supply system uses a mode detector to switch between PWM and pulse modes based on control current amplitude.

A switching device stabilizes solar panel electric output by dynamically controlling switch circuit states based on real-time power measurements.

Series-parallel mode active clamps absorb leakage energy in snubber capacitors to reduce switching losses.

Varying driving pulse counts during light-load operation reduces transformer beat sounds without increasing switching losses.

A switching power converter controller adjusts on-time and base current to maintain ultra-low standby power.

A control device adjusts direct current voltage lower limits based on system voltage to maximize solar power output.

Segmented core legs generate distinct magnetic fluxes to achieve high leakage inductance without increasing transformer size or adding components.

A compensation signal generator injects phase-shifted signals to cancel undesired frequencies in a wireless power primary coil.

Direct primary side detection of switch node voltage removes isolator transmission errors and blanking time requirements for high frequency operation.

Self-driven MOSFETs replace bridge diodes in a rectifier circuit, eliminating voltage drop losses without adding control complexity.

A switch mode power supply circuit clamps rectified voltage using a varistor and diode network to protect MOSFET switches from overvoltage.

Self-driven synchronous rectifier control circuitry replaces diode bridges with parallel MOSFETs, reducing voltage drop losses from 10 W to 3.7 W.

A full bridge DC-DC power supply varies control signal duty cycle to regulate output voltage while maintaining zero voltage switching.

A multi-phase boost converter manages LED backlight illumination through controlled phase transitions and peak current adjustment.

A power factor correction circuit calculates switch on time to prevent light flicker.

A multiple-output DC/DC converter recovers surge energy from transformer leakage inductance using a dedicated absorbing unit.

A DC-DC converter uses a resistive element to dampen voltage oscillations between transistors.

Detects voltage valleys across a switching element to trigger turn-on events, reducing switching losses and electromagnetic interference.

A power supply device calculates maximum suppliable power using internal detection units and transmits the value to a secondary controller.

Digital delay lines adjust dead time using inductor current measurements to reduce voltage stress and improve efficiency across varying conditions.

A switched-mode power supply circuit boosts controller voltage using a capacitor and buffer to reduce component count.

An adaptive current loop controller switches control coefficients to maintain continuous current flow in power factor correction circuits.