Inrush-Protection Bypass Circuit for Lower Power Dissipation

The patent implements a dynamic bypass mechanism where a control circuit monitors the temperature of the NTC thermistor and activates a bypass path when the thermistor is hot. This dynamically switches the circuit configuration based on real-time conditions, allowing current to flow through the lower-resistance bypass path when inrush protection is no longer needed, thereby reducing power dissipation and improving efficiency.

The patent introduces a bypass circuit as an intermediary path that works in parallel with the NTC thermistor. The bypass circuit includes a switch controlled by temperature sensing, creating an intermediate routing option for current flow. This intermediary structure allows the system to achieve both inrush protection (through the NTC when cold) and reduced power loss (through the bypass when hot).

The patent implements a bypass path that is pre-configured and can be activated immediately when needed. Instead of waiting for the NTC thermistor to cool down naturally, the system has a ready-made alternative path for current flow. The control circuit detects when bypass conditions are met and activates the bypass path proactively, eliminating the need to wait for cooling and reducing service interruption time.

The patent creates a dynamic system where the circuit configuration changes based on thermistor temperature. When the NTC is hot and needs time to cool, the bypass path is activated to maintain system operation. This dynamic switching between NTC-only mode and bypass-assisted mode allows the system to overcome the cooling time limitation and maintain continuous operation.