Buck-Boost Converter Control for Smooth Mode Transitions

The control unit starts a timer upon detecting a peak current event, and before the timer expires, it determines whether to transition modes based on whether the clock signal occurs prior to the timer signal. This preliminary timing preparation allows the system to anticipate and smoothly execute mode transitions, preventing abrupt changes that cause voltage overshoots and undershoots.

The power converter dynamically switches between buck, buck-boost, and boost modes based on real-time comparison of clock signal and timer signal timing. The control unit adjusts the operation mode dynamically by detecting peak current events and evaluating signal timing relationships, enabling adaptive voltage regulation while maintaining stability during transitions.

The control unit implements a universal timing-based control mechanism that manages three different operation modes (buck, buck-boost, boost) through a unified approach using clock signals, timer signals, and peak current detection. This multi-functional control system handles various voltage conversion scenarios with a single integrated control logic, expanding the voltage regulation range without proportionally increasing complexity.

The control unit changes operational parameters by switching between different modes based on the timing relationship between clock and timer signals. When the clock signal occurs prior to the timer signal, the system transitions from buck mode to buck-boost mode, adjusting the voltage conversion ratio parameter to maintain stable output across varying input voltages.