Dc-Dc Conversion TRIZ Cases
- Single-Stage Buck-Boost Inverter Without DC Link Capacitors
A single-stage buck-boost inverter uses step modulation and bidirectional flow to cut switching losses and remove bulky DC link capacitors.
- Virtual-Ground Current Detection Circuit for Load Drive Accuracy
A virtual ground line makes signal-processing current pass through the detection resistor, cutting common-mode amplification and sensing errors.
- Switched-Capacitor Line Driver for Zero-Voltage LED Node Signaling
A switched-capacitor line driver separates power and signaling paths to enable zero-voltage switching and cut transistor and inductor losses.
- PV Converter Voltage Limiting That Preserves MPPT Power Output
A simulated PV curve lets voltage-limited converters work with existing inverter MPPT control without string power dropping to zero.
- Ring Oscillator GaN Power Converter for High-Frequency Switching
A ring-oscillator GaN converter self-generates high-frequency gate drive to cut size, ripple, switching losses, and EMI.
- Charge Pump Clock Phasing for Lower Current and Ripple Noise
Staggered main clock transitions with voltage-triggered pumping reduce charge pump input current, power use, and ripple noise.
- Adaptive Voltage Gain Control for Ripple and Load Transients
Weighted buffer gain adjustment cuts light-load voltage ripple and speeds heavy-load transient response in power supplies.
- Coupled Class-D LC DC-DC Converter Without External Passives
Self-oscillating coupled LC oscillators enable a fully integrated DC-DC converter that cuts switching losses and removes external passive components.
- Micro Inverter Feedforward Control for Output Capacitor Reactive Current
Feedforward compensation adds output-capacitor reactive current to the control current, improving micro inverter grid-current quality.
- Multi-Level Converter Structure for String-Level MPPT Control
Linked converters track each solar string’s maximum power point while resistor-based voltage detection and isolated auxiliary power cut control complexity.
- Series Dynamic Load Power Control for Voltage Imbalance Regulation
A controller adjusts converter phases and switching modes to hold safe voltage across series-connected dynamic loads while cutting power loss.
- Isolated Gate Drive With Floating Return for Parasitic Current Bypass
A floating return line routes transformer parasitic current to the switch source, protecting the gate driver and cutting dissipation.
- Switching Power Supply Gate Control for Voltage Spike Suppression
Dynamic gate-drive strength control suppresses switching voltage spikes, protects power components, and avoids bulky energy-loss snubbers.
- Bi-Level LED Power Supply Using Isolated PWM Dimming
Optically isolated PWM dimming enables 100% and 30% LED brightness while simplifying surge protection and meeting UL 1310 Class 2 limits.
- Power Converter Hysteresis Control for Stable Mode Switching
Threshold-based hysteresis decouples voltage and current control loops to prevent commutation oscillation during power converter mode switching.
- Power Supply Cell Switching for Wide Constant-Power DC Output
PWM-controlled series-parallel switching with low-pass filtering smooths current steps and keeps DC output power continuous across a wide voltage range.
- Interleaved Power Stage PWM Control for Rail Current Balancing
Separate PWM signals derived from average rail current balance interleaved power stages despite component mismatch, improving thermal sharing.
- Hybrid DC-DC Converter Control for Light-Load Noise Reduction
Multiple load thresholds switch a DC-DC converter among variable-frequency, constant-frequency, and pulse-skipping modes to cut light-load noise and EMI.
- Bootstrap Driver Supply Circuit Using an Auxiliary Capacitor
An auxiliary capacitor and normally off switch sustain bootstrap driver voltage during startup and continuous operation with low impact on the main power path.
- Asymmetric Half-Bridge Flyback Converter With ZVS Winding Control
A reverse-direction ZVS winding turns on the auxiliary switch early to prevent rectifier false turn-on, cut switching loss, and improve light-load efficiency.
- Asymmetric Half-Bridge Flyback Control for ZVS and ZCS Timing
Dynamic auxiliary-switch delay control uses drain-source voltage feedback to maintain ZVS and ZCS, improving flyback efficiency and lowering EMI.
- Three-Phase DC-DC Converter Frequency Control for Load-Dependent Losses
Load-curve-based frequency control helps three-phase DC-DC converters cut power loss and thermal dissipation across varying loads.
- Three-Phase DC-DC Converter Frequency Control for Lower Thermal Loss
Load-curve-based modulation frequency control cuts thermal dissipation and power loss in three-phase DC-DC converters across varying loads.
- Buck-Boost Battery Module for Multi-Voltage Terminal Power
A buck-boost controlled battery module matches terminal voltage needs across different cell systems, improving service life and safety.
- Switch Converter Gate Driving With Two Voltage Levels
A high gate voltage closes the switch quickly, then a lower hold voltage cuts maintenance power in DC switch converters.
- Auxiliary-Winding Power Supply Control for Reliable Overvoltage Shutdown
Dual control circuits use timed voltage thresholds and a dummy resistor path to suppress pseudo overvoltage and ensure reliable switching shutdown.
- Dual-Path Active Damper for Low-Loss Resonant Ringing Control
A delayed two-path clamp and snubber damps resonant ringing while limiting peak voltage and cutting converter power loss.
- DISO Converter Group Control for Uniform Voltage and Peak Power Tracking
A unified MPT controller uses time-division and voltage balancing to track group peak power in DISO converters with lower complexity and ripple.
- Ultrasonic Atomizer Control Circuit for Fast Start and Stable Smoke
A voltage regulator raises booster output after idle periods, giving ultrasonic atomizers faster startup, steadier smoke, and less dry burning.