Efficient Power Electronics Conversion TRIZ Cases

A DC-DC switch converter operates in forced continuous conduction mode with controlled positive and negative current phases.

A resonant converter circuit dynamically adjusts switching frequency during burst mode operation.

Segmented ground references in a power converter control circuit eliminate expensive drive transformers, reducing manufacturing cost and circuit complexity.

A PFC autodetect circuit monitors current flow to enable or disable a boost converter based on power conditions.

A synchronous rectifier control circuit modulates a secondary-side transistor to enhance converter efficiency at high currents.

An EEPROM stores correction data to adjust delay times for soft-switching, reducing switching losses caused by command-to-action variations.

A charge pump controller switches between adiabatic and non-adiabatic modes to optimize power conversion efficiency.

Abnormal state detection circuit monitors SET terminal for open or short circuits to suspend switching operations in insulated synchronous rectification converters.

A phase compensation method synchronizes input current and voltage waveforms in power factor correction circuits.

A zero current controlled dimming circuit minimizes power loss by maintaining the low side switch on after inductor current reaches zero.

Segmenting steady-state and transient paths into main and auxiliary converters reduces power loss and eliminates large output capacitors.

An adaptive controller adjusts power converter duty cycles to optimize energy conversion.

Segmenting conversion into low-frequency coarse and high-frequency fine stages reduces MOS losses while maintaining fast transient response.

Dynamic frequency adjustment and on-chip inductor sensing reduce power consumption in buck converters, extending battery life while maintaining high efficiency.

A control module balances output currents across parallel resonant converters using PWM adjustments to mitigate thermal losses from circuit layout differences.

A burst mode controller delays synchronous rectification driving signals to optimize energy transfer in resonant circuits.

A rectifier circuit uses series-connected semiconductor devices to bypass body diode conduction and optimize switching states.

Dynamic threshold adjustment compensates for loop delay, maintaining power efficiency across varying load conditions without excessive switching activity.

A switching power conversion circuit disables its two-stage topology when no load is detected to reduce standby energy consumption.

A power converter adjusts oscillating signal frequency to enable the high-side switch at peak resonating voltage.

An adaptive control system adjusts controller gains based on sensed and predicted component values to maintain inverter stability.

A power supply control device manages switching devices in boost choppers using oscillation waves and comparison voltages.

A sub-resonant DC-DC converter applies voltage pulses separated by zero voltage periods to control switching frequency below the LC tank resonant frequency.

Secondary-side controller synchronizes switch timing using reflected input voltage measurements to ensure accurate energy transfer.

Switching controller restricts frequency within a predetermined range, reducing switching loss and electromagnetic interference across varying loads.

A virtual impedance creation loop adjusts oscillator amplitude and phase to maintain resonance in high-frequency power systems.

A power source device uses a current detection circuit to reduce switching losses and improve efficiency at light loads independent of input voltage.

A switching converter controller uses a detection circuit to trigger a soft stop operation that discharges input capacitance via a switchable load.

A soft-start circuit generates a ramped voltage to limit inrush current during switched-capacitor converter start-up.

Magnetic coupling replaces opto-couplers in power converter controllers, eliminating external isolation parts and boosting feedback bandwidth.

A dual-stage converter uses synchronous switching to boost input voltage while maintaining high efficiency in bypass mode.

A switching control circuit reduces pulse width before frequency changes to support synchronous rectifiers.

A primary side control circuit measures resonant converter current to regulate LED string power without secondary feedback.

Digital resonant control device switches between pulse frequency and pulse width modulation modes to regulate output voltage.

Segmenting the power supply chain with non-regulated converters reduces transformation losses and simplifies layout design compared to fully regulated systems.

A tapped transformer forward boost converter stores and transfers energy using segmented secondary windings to leverage parasitic inductances.

A variable DC-link converter adjusts intermediate voltage to maintain constant efficiency across wide battery charging ranges.

A power converter out-of-audio control loop generates negative current pulses through an inductor during skip mode to discharge output voltage.

A power adaptor adjusts its conversion ratio via a feedback circuit to optimize output voltage.

Multiplexers route input signals to comparators, reducing device complexity while maintaining simultaneous over-voltage and under-voltage detection.

A switched converter uses a voltage scaling unit in the feedback path to adjust output currents without modifying shunt resistor values.

A control device determines the operating state of a magnetic-coupled boost converter to measure average reactor current accurately.

A DC/DC converter adjusts gate signal phases to stabilize charge/discharge capacitor voltage control.

A bi-directional resonant power converter splits the LC tank into two circuits on one transformer side to reduce RMS current and power dissipation.

Variable resistance circuits adjust gate drive strength in bi-directional converters to prevent self turn-on during step-up and step-down operations.

Magnetically coupled inductors in an interleaved power supply cancel even multiple noise frequencies, reducing ripple components.

High-order device coordinates multiple inverters to adjust active and reactive power output.

Sampling coil current at the midpoint of switching periods stabilizes average current, ensuring reliable overcurrent protection and light load detection.