Voltage Regulator Bias Current Boosting for Load Transients

The bias current is made dynamic rather than static. The bias current boosting stage increases the bias current of the differential stage only when needed (during load transient conditions when output voltage changes occur). This dynamic adjustment allows the regulator to achieve fast response time during transients while maintaining lower power consumption during steady-state operation, thus resolving the contradiction between speed and energy use.

The bias current boosting operates periodically or intermittently based on the regulator's operational needs. The bias current is boosted during transient conditions (when voltage changes occur) and returns to normal levels during steady-state operation. This periodic activation of the boosting function enables fast response when required while minimizing power consumption during normal operation.

The system dynamically adjusts the bias current based on operational conditions. During load transient conditions when output voltage recovery is needed, the bias current is increased to speed up the response. During steady-state operation, the bias current returns to normal levels to minimize power consumption. This dynamic adaptation resolves the contradiction between reducing time loss and minimizing energy loss.

The bias current parameter is changed based on the regulator's operational state. The bias current boosting stage modifies the bias current parameter from its normal value to a higher value during transient conditions, enabling fast voltage recovery. When transients subside, the parameter returns to its original value, thus achieving fast response when needed without continuous energy expenditure.

A bias current boosting stage is introduced as an intermediary component between the error amplifier and the power stage. This intermediate stage receives the error signal and generates the boosted bias current for the differential stage, enabling fast response without directly modifying the core power regulation circuitry. The intermediary approach adds functionality while maintaining a modular structure that limits complexity propagation.

The bias current boosting stage serves multiple functions: it amplifies the bias current during transients, shapes the frequency response, and works in conjunction with the existing error amplifier and differential stage. By making this component multi-functional, the patent achieves improved response speed without proportionally increasing overall system complexity, as the same circuit elements contribute to multiple performance aspects.