Efficient Power Electronics Conversion TRIZ Cases

A secondary-side digital controller senses rectified voltage to detect primary-side faults without additional analog isolation circuitry.

A power supply apparatus manages switching operations between continuous driving and halt periods to improve energy efficiency.

A switching frequency adjusting circuit detects phase differences between inverter output voltage and current signals to align operation with the resonant frequency.

Active FET rectification in a three-phase LED power supply reduces energy losses and protects against overvoltage damage.

Segmented pulse frequency modulation control reduces noise and power consumption by enabling fine frequency adjustment without high-speed digital components.

A two-stage drive circuit derives timing from a transformer secondary winding and uses a stable voltage source to power the synchronous rectifier switch.

Multi-order resonant circuit selectively closes current paths to extend power supply holding-up time during voltage dips.

A control circuit reduces quiescent current by deactivating error amplifiers during light load operation.

A synchronous buck converter uses a replica transistor to sense load current without external components.

A scalable switched capacitor integrated buck regulator segments voltage conversion into two stages using series and parallel switch circuits.

Auxiliary circuit extends hold-up time without sacrificing efficiency or increasing bulk capacitance.

An active clamp circuit with an RC network manages gate drive signals.

A dual-stage power supply system uses overlapping module profiles to reduce transmission impedance and voltage fluctuations on mainboards.

A flyback converter uses a passive clamping circuit to redirect transformer leakage energy, minimizing conversion losses and enhancing power density.

A switching power supply halts transformer oscillation to stop energy output while keeping the control unit powered for immediate restart.

A wind power controller manages reactive current feeding to maintain grid stability.

Master-slave zero cross detection prevents reverse current flow by disabling low-side MOSFETs, reducing power losses and improving efficiency.

A coreless transformer gate driver circuit uses an air-core design to provide galvanic isolation without introducing magnetic interference.

A driver circuit determines secondary current indirectly using primary-side signals to regulate LED illumination.

A multiphase switching converter uses a daisy chain control circuit to dynamically adjust active phases, reducing switching losses when load current is low.

Current source injection discharges parasitic capacitances before turn-on, eliminating cross conduction losses and reducing electromagnetic noise generation.

A DC-DC converter sub switch control circuit generates signals from capacitor potential to manage switching states.

Variable frequency operation reduces switching loss and IGBT stress during light load conditions.

Dynamic threshold adjustment prevents three-level mis-triggering and reduces noise injection in EMI-sensitive mobile applications.

A synchronous buck regulator synthesizes inductor current during high-side switching using low-side measurements to generate a complete signal.

A multi-phase synchronous converter adjusts switching modes to extend operational flexibility.