Dc-Dc Conversion TRIZ Cases

A phase-shift DC/DC converter uses a series-switch active clamp to handle rectifier overvoltage while reducing module cost and cooling complexity.

Temperature compensation adds a positive offset to counter process-tracker drift, keeping regulator output voltage stable with low power use.

Half-cycle switching alternately couples the DC/DC converter to each DC bus, limiting transformer saturation under UPS bus imbalance.

Two high-side and low-side sensing elements are summed to measure half-bridge output current with low loss, low cost, and shoot-through cancellation.

A variable-resistance flux probe measures loop emf across a magnetic core, enabling compact switching power supplies without direct magnetic interference.

A self-adjusting feed-forward loop tunes FEFO gain from control-error and DC bus ripple signals to suppress LED output ripple without manual setup.

A compensated current and one-shot timing circuit keeps inductor ripple stable across wide output voltages, enabling smaller inductors and lower module cost.

Direct current sensing in a three-phase interleaved resonant bidirectional DC-DC converter cuts ripple, cost, and overcurrent response time.

Multiple control modes switch by duty ratio and input voltage to improve DC-DC converter efficiency in light-load and no-load states.

Electrically coupled output inductors let each phase induce the other, boosting current slew rate and transient response in step-down power converters.

Separate current controllers limit each parallel DC-DC module's output current to prevent overload while maintaining output voltage.

A dual-loop control scheme keeps converter switching frequency within set bands to improve efficiency while limiting ripple and noise.

Demagnetization-time feedback replaces voltage sampling in LED current converters, improving low-brightness current accuracy.

Capacitor-coupled fault circuitry detects transformer short-circuit switching patterns and shuts down non-earthed equipment before peak voltage exposure.

A sampled-load control loop adjusts PWM frequency to improve light-load efficiency and avoid magnetic saturation at heavy load.

PWM control of coil current and supply voltage steps high input down to a stable lower output with less heat, power loss, and circuit bulk.

Precharging phase-compensation capacitors before restart helps a switching power supply recover from low-power mode with faster output voltage stabilization.

Feedback compensation stabilizes resonant voltages and adjusts duty cycle to preserve zero-voltage switching and cut switching loss.

Modulated commutation switches and freewheeling paths control welding current di/dt, handle transients, and stabilize the arc.

Dynamic current limiting uses sensed input and output voltages to curb substrate current and protect the power switch under high-load conditions.

Adaptive PWM cycle control extends on-time or off-time to push converter ratios toward 0 or 1 and widen input-output voltage range.

Ripple-signal crossing and DC offset calibration help a power converter stabilize output voltage quickly under load fluctuation.

A controller identifies loss-prone MPPT boost circuits and adjusts input voltage matching to cut switching loss without disrupting total power output.

Per-phase error-current feedback adjusts duty cycles to balance converter phase currents and stabilize power output without added circuit complexity.

Short-circuit detection turns off a gallium oxide switching element within 1.4 μsec to prevent phase transition and thermal damage.

Measures inductor loss in operating power converters by calibrating voltage-current timing skew with added-capacitor waveform capture.

Current comparison and delay circuits correct phase-current mismatch in multi-phase DC-DC converters by tuning duty cycles without changing ramp voltages.

Resistor-based voltage sampling replaces isolators in a multi-input power supply, cutting circuit complexity, cost, and interference.

A filtered PWM setpoint and DAC DC reference are combined in a switch control loop to balance fine adjustment with faster transient response.

A parallel biasing switch and rectifier pre-charge MOSFET output capacitance and clear body-diode plasma to cut reverse recovery losses.

A controlled inner-switch sequence balances a split DC-link without a 4th leg converter, avoiding common mode voltage on DC source terminals.

By switching modes with output power, the converter cuts switching loss at light load and limits peak current to reduce inductor size and cost.

Relocating TLVR ground and splitting voltage with compensation inductors lowers primary-side transient hazards and eases safety compliance.

Duty-cycle control across independent phase circuits switches between three-, two-, and single-phase output to avoid voltage overshoot and undershoot.

Feedback and pulse switching keep mini LED voltage within range, reducing brightness variation and improving display uniformity.

Reverse current induction lets multiphase power supplies self-test internal phases without external equipment, cutting test cost and complexity.

Reduced startup bias and detected-voltage self-biasing let a power converter regulate current across a wide input voltage range with less complexity.

Per-phase signal comparison and mode-aware timing logic detect switching-circuit faults quickly in DCM, CCM, and phase-shedding operation.

A capacitive divider and standard isolation transformers cut voltage stress in high-voltage DC-DC converters while avoiding custom pulse transformers.

Ambient-temperature sensing shifts phase crossover thresholds in a multi-phase voltage regulator to cut power loss and sustain efficiency.

A selector switches between sensed and reconstructed inductor current to keep duty-cycle control accurate when switch off-time is too short.

Switchable type I, type II, and bypass paths let a galvanically isolated partial power DC-DC converter match changing voltage and power needs.

Adjusting I2C supply voltage and driver speed helps a PMIC maintain accurate communication under noise while preserving DC/DC efficiency.

Asynchronous load current switching limits HVDC fault current by threshold-based response, improving remote power safety without complex links.

Varying chopper switching frequency over time prevents ripple synchronization, suppressing phase current drift and abnormal heating.

A detection coil and RC network sense converter coil current without reference offset circuits, cutting cost and reducing ADC quantization error.

Filtered comparators, a parallel current source, and FSM states mitigate voltage droop while avoiding loop oscillation and excess decoupling cost.

Adaptive power limiting uses input voltage and temperature signals to raise adapter output when conditions allow while preventing overheating.

Bias-transistor voltage sensing gives the controller discharge-period visibility, preventing CCM during buck-converter output short circuits.