Differential FeedbackDC-DC Converter
A novel differential switching-mode power converter designed to suppress voltage ripple and improve stability — using two parallel SMPSs with inverted control signals and negative-feedback enhancement.
What was built
- 01
Designed a dual-converter differential topology where two SMPSs operate in parallel with inverted PWM and feedback signals to suppress output ripple.
- 02
Developed a negative-feedback control loop using a high-speed comparator to dynamically adjust output voltage under varying load and input conditions.
- 03
Designed a PWM-based control system to monitor switching behaviour for stable voltage regulation across input ranges.
- 04
Added a hysteresis mechanism in the feedback loop to reduce noise-induced switching transitions and improve system stability.
- 05
Ran extensive LTspice simulations comparing differential versus standard converter structures, validating the topology's advantages quantitatively.