Efficient Power Electronics Conversion TRIZ Cases

A rectifier circuit design reduces transient current by charging parasitic capacitance and accumulating energy in a coil.

A control device with a discrimination circuit generates switching signals based on feedback and discrimination data.

Auxiliary switch recycles leakage inductance energy to suppress voltage spikes without burning power in snubber resistors.

A pulse frequency modulation controller compares voltages and adjusts switch drive frequencies, enabling stable operation during high-power inputs or overloads.

A four-switch three-phase DC-DC resonant converter uses half-bridge circuits and a voltage divider to produce phase-shifted AC power.

A gate drive circuit uses alternating P-type and N-type thin film transistors to stabilize output signals at key nodes.

Galvanic isolation in bi-directional optimizers prevents ground leakage currents while equalizing state of charge across parallel battery racks.

A universal charger adapts switch groups to input power, resolving the trade-off between fast charging speed and device compatibility.

A power supply circuit adjusts control values to maintain equal average feedback current during mode transitions.

A Class EF power inverter drives a transmitter coil using a parallel resonant network tuned to a non-integer multiple of the switching frequency.

Shared central columns ensure uniform electrical parameters, reducing volume and weight while optimizing current sharing.

A PFC circuit balances bus voltages using a relay during battery supply mode.

Dividing input voltage into three sub-ranges stops step-up circuits during fluctuations, preventing unnecessary power consumption and engine start obstruction.

Current steering circuitry and valley filling reduce switching losses while maintaining high power factor.

Dual-side compensation signals stabilize bus and load voltages during standby mode, reducing power loss from inherent current errors.

Voltage compensation circuit generates periodic signal to end conduction intervals, ensuring stable output current across varying power levels.

A resonance contactless power supply switches between self-inductance and mutual inductance states to output stable voltage.

A regulation circuit adjusts the second conduction time based on average inductor current differences to align with AC input voltage.

A switch control circuit adjusts clock signal enable periods to manage switching frequency ratios in resonant converters.

Current detection manages rectification timing to overcome low on-resistance FET limitations and improve power supply efficiency.

Controller monitors energy delivery across multiple phases and adjusts activation sequence to resolve output voltage ripple while reducing required capacitance.

Adaptive active filter loop compensator redistributes bias current to maintain stable gain and bandwidth.

Partial inductor coverage over discrete power stage transistor dies reduces PCB footprint and enables visual inspection of uncovered pins.

Dynamic role assignment minimizes power loss from circulating currents in multi-winding DC-DC converters by adjusting phase differences and duty cycles.

Phase angle difference detectors synchronize multiple power conversion phases, reducing circuit complexity and cost compared to traditional PLL systems.

A logic unit detects body diode conduction time to generate an optimized SR turn-off signal for synchronous rectifiers.

A gate drive voltage controller adjusts the power FET drive level based on output current to optimize switching performance.

A Miller compensation device with a control circuit regulates capacitor voltage to prevent high-voltage damage in automotive feedback loops.

Internal resistor matching eliminates external noise susceptibility while maintaining accurate current measurement in switching regulators.

Feedback circuit uses resonant tank and load signals to stabilize zero-voltage-switching converters against voltage fluctuations.

A switched mode power supply uses an adaptive time controlled oscillator compensation circuit to regulate feedback voltage during startup.

Replacing BJTs with MOSFETs and adding a reset circuit reduces switching losses, enabling smaller transformers and reliable low-temperature start-up.

A control unit adapts switching frequency and duty cycles in a DC-DC converter to enable soft-switching operations.