Electronic Switching TRIZ Cases
- Gate-Source Control Circuit for Surge and Switching Loss
An inductor-resistor-capacitor gate-source circuit suppresses turn-off surge voltage while limiting switching loss in semiconductor switches.
- Negative-Capacitance Topological QFET for Low-Voltage Switching
A negative-capacitance gate stack amplifies channel electric field to cut sub-threshold swing and power dissipation in topological QFETs.
- Rotary Switch Handle Reset Using Dual Arcuate Springs
Dual arcuate springs inside the handle enable compact automatic reset for rotary switches while simplifying assembly and avoiding magnetic interference.
- Electronic Switch Surge Protection for DC Voltage Peaks
A varistor-capacitor branch and switch-resistor path limit DC switching overvoltage and enable low-loss energy discharge.
- Capacitive Door Seal Sensing for Precise Vehicle Door Cinching
Embedded conductors in the door seal create capacitive feedback so the cinch assembly can maintain alignment, sealing, and lower NVH.
- IGBT Relay Protection Circuit for EV Overvoltage and Undervoltage
A relay-controlled parallel capacitor circuit protects EV high-voltage parts from overvoltage and undervoltage to prevent failure and extend service life.
- Solenoid Contactor Driver With Switchable Fast Discharge Path
A switchable freewheel and Zener clamping path speeds solenoid de-energization, reducing contactor damage, chip area, and safety risk.
- Passive Gate-Driver Circuit for Series IGBT DC Breakers
A single passive gate-driver uses shared resistors, diodes, MOVs, and RC snubbers to simplify series IGBT DC breakers and improve reliability.
- Gate Driving Circuit for Dead-Time Body Diode Suppression
Voltage feedback and comparator control keep the low-side switch on during dead times to cut body diode losses and deterioration.
- Pressure-Sensing Membrane Module for Multi-Level Keyboard Input
A deformable membrane and variable resistance layer turn binary key presses into pressure-sensitive input without adding complex keyboard structure.
- Vehicle Operation Interface Control for Adjacent Push-Touch Inputs
Directional input control delays adjacent touch actions after a push operation to prevent accidental execution without canceling intended commands.
- Stacked 2DEG Transistor Structure for Lower On-Resistance
Multiple heterojunction 2DEG channels linked by source and drain plugs cut on-resistance while keeping gate control of sub-surface current paths.
- Active Gate Driver With di/dt Feedback for Low-EMI WBG Switching
di/dt feedback from parasitic inductance lets this active gate driver cut switching loss while suppressing EMI and false turn-on in WBG devices.
- Linearized Field Plate Biasing for High-Voltage Gate-Drain Stress
Independently biased field plates use depletion transistors with different pinch-off voltages to flatten gate-drain fields and cut leakage current.
- Bidirectional Semiconductor Switch With Passive Substrate Discharge
A passive discharge circuit keeps the substrate near 0 V in bidirectional switches, improving ZVS behavior without extra gate control.
- Haptic Button Assembly With Lateral Motion for Compact Tactile Feedback
Electromagnetic lateral motion in a haptic button delivers tactile feedback with minimal displacement while saving space in portable electronics.
- Phase Change RF Switch State Control Without RF Penalty
Stored target states and low-frequency monitoring let a phase change RF switch correct startup or overvoltage mis-switching without harming RF behavior.
- Monolithic Multi-i Region PIN Switches for RF Arm Optimization
Different intrinsic region thicknesses on one wafer let each RF switch arm be tuned for power, loss, reliability, size, and cost.
- Capacitive Rain Drop Detection Using Differential Signal Symmetry
Differential capacitance symmetry helps distinguish raindrops from dust or contact events, enabling robust low-cost rain sensing for garden appliances.
- Inductive Trigger Assembly for Precise Power Tool Motor Control
Non-contact inductive sensing tracks trigger movement to control motor direction and speed while reducing switch wear and extra components.
- Dynamic Electrostatic Doping in FETs for Short-Channel Control
Electrostatic doping in overlapping FET regions improves channel control, cuts leakage, and supports nanoscale scaling with stronger drive current.
- Power Switch Driver Timing Using Gate Current Feedback
Gate-current sensing adjusts turn-on delay so power switches reach lower-voltage turn-on, cutting spikes and switching loss.
- Non-Avalanche Depth Sensor With Low-Latency Photodetection
Sub-hundred-nanosecond photodetector readout improves low-light depth sensing accuracy without avalanche sensor complexity.
- Single-Pole Multi-Throw Switch Using 90° Phase-Shift Routing
A 90° phase-shift transmission line and one optical control signal simplify RF switch routing while reducing loss, interference, and circuit complexity.
- Capacitor-Switched Current Source Circuit for DAC Linearity
Pre-charging a capacitor before current steering boosts voltage headroom in switched current source circuits, improving DAC linearity and bandwidth.
- Parallel Power Device Driving Circuit With Common Magnetic Bead
A common magnetic bead equalizes parasitic inductance across parallel power devices to synchronize switching and improve current sharing.