Pulse Duration/Width Modulation TRIZ Cases
- PFM-PWM Switching Circuit for Smooth Voltage-Mode Transition
Voltage-mode detection matches PWM pulse width to peak PFM frequency, reducing chip area and eliminating output voltage jitter.
- PWM Modulator Feedback Circuit for Lower-EMI Class-D Amplifiers
Feedback, low-pass filtering, and phased output buffering cut switching noise and peak voltage in class-D amplifiers, reducing EMI.
- Digital PWM Feedback for Switching Amplifier Error Correction
Digital feedback compares ideal and output PWM signals to correct amplifier nonlinearity and power-supply ripple without complex analog filters.
- Digital Switching Amplifier PWM with Offset Pulse Compensation
Alternating offset addition and sign-based PWM paths cut residual noise, heat, and pop noise in digital switching amplifiers.
- Self-Oscillating PWM Phase Shift Using a Forward-Path Delay
A forward-branch delay element replaces hard-to-tune comparator hysteresis, enabling precise 180° phase shift and stable self-oscillating PWM.
- Ripple Pacifier for DC-Link Voltage Stabilization
A plug-and-play Ripple Pacifier absorbs DC-link ripple power using active filtering to stabilize voltage without hardware modifications.