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.

A switching apparatus calculates turn-off time using monitoring and reference voltages to regulate inductive element current.

Analog Inductor Current Mapping controller regulates inverter output via direct voltage-current relations.

Input voltage switch circuit isolates core power supply from input source during failure conditions.

Adjusting the error threshold simultaneously with the sawtooth ramp frequency prevents voltage overshoot and undershoot in SEPIC converters.

Segmented power conversion cells use controller-managed bypass switches to isolate faulty units and maintain output quality without backup inverters.

A multi-stage charge pump uses auxiliary capacitors to alternately charge and discharge pumping nodes.

A switching power supply apparatus uses a high-speed diode to suppress reverse current peaks.

Cross-domain voltage regulators share power across domains to reduce individual peak ratings, lowering component size and improving thermal management.

Auto-calibrating the integrator RC network resolves average current sensing inaccuracy caused by switching ripple in peak control loops.

Dual rest state switching in a SIMO converter reduces output oscillations and improves efficiency by dynamically adapting control modes.

Segmented inductors reduce ripple current and eliminate DC circuit breakers, lowering system cost.

A switching power supply control circuit uses an analog comparator to compare current detection signals with compensation values.

A power supply control circuit detects peak current reaching time and difference voltage to adjust switching element delay time.

Modulating current limit thresholds introduces frequency jitter to power converter switching cycles.

A dual transformer power supply device manages independent controller voltages to ensure precise driving-system shutdown timing.

Feedback circuit feeds transformer operating state to pulse width modulation controller.

A digitally controlled current-mode power supply architecture replaces analog components with digital logic to enhance resolution and efficiency.

A power adaptor control unit adjusts transformer primary voltage using secondary current sensing to compensate for cable resistance.

A semiconductor switching device utilizes a driving unit connected between power and ground terminals to generate a control voltage relative to a virtual ground node.

A buck regulator uses an analog bypass path with auxiliary switches to extend dynamic range and maintain regulation during high current loads.

An error amplifier compares reference and output voltages to regulate DC-DC converter outputs.

A power converter control circuit adjusts ramp signal amplitude via a transient circuit to maintain stable output voltage during heavy current sourcing.

A non-synchronous buck converter uses a software-based bootstrap controller to adjust set points based on input voltage levels.

An auxiliary coil generates multiple supply voltages selected by a switching circuit to maintain stable margins during output voltage transitions.

A power supply controller adjusts the descending slope of an analog voltage identification signal to manage output voltage transitions.

A power converter regulating circuit couples a voltage compensation signal to the error amplifier output.

A voltage regulator control circuit compensates for electrical connection resistance using a programming resistor and ammeter input.

A non-synchronous boost converter uses a low-voltage transistor to disconnect the output terminal from the input during shutdown.

A circuit arrangement monitors mains input voltage and switches on a load to rapidly consume energy stored in capacitors.

A switching regulator adjusts PWM signals via an over current detection circuit to control power transistor ON time.

A welding power supply controller determines arc voltage by sensing internal and output voltages during active and freewheeling stages.

A power converter generates multiple output voltages using a load detection circuit to select the appropriate voltage specification.

Electronic trip circuit detects DC current levels to switch contacts open for rapid fault isolation.

A negative voltage protection MOSFET driver selectively controls a synchronous Buck regulator switch to prevent excessive negative voltage.

A self-driven active clamp circuit recycles transformer leakage energy through a voltage-sensing switch and delay controller.

High voltage start-up circuit adjusts power-on and restart times using NMOS transistors and counters.

A boost converter uses a P-N topology to generate an intermediate voltage for linear output ramping.

Dynamic gate resistance prevents DC link voltage overshoot beyond blocking ratings, ensuring safe operation while minimizing switching losses.

A voltage regulator circuit configures a bulk connection to prevent spurious latching in switching devices.

A dual-inductor power converter topology generates regulated positive and negative output signals from a single input source.

A ramp adjustment circuit modifies the PWM signal slope to optimize synchronous buck converter operation across conduction modes.

Detection circuit triggers discharge upon input cut-off, eliminating resistor losses while maintaining EMI suppression.

Daisy chain control circuits manage multiphase switching converters to resolve controller complexity trade-offs while maintaining thermal and EMI performance.