Lamp Board Circuit With Detection Sequencing for Surge-Free Hot Plugging

The patent implements preliminary action by establishing a detection power connection before the driving power connection during the hot plugging process. The detection power terminal is connected first to verify proper grounding and connection status, and only after successful detection does the system enable the driving power terminal. This preliminary verification step prevents surge damage by ensuring the ground interface is properly connected before power is applied to the LED lamp board.

The patent introduces an intermediary detection power terminal that acts as a mediator between the power supply and the LED lamp board. This intermediate detection step verifies the connection status and grounding integrity before allowing the main driving power to be connected. The detection power terminal serves as a safety intermediary that prevents direct power connection until proper grounding is confirmed, thereby eliminating surge risk while maintaining hot plugging capability.

The patent applies preliminary action by requiring the detection power terminal to be connected and verified before the driving power terminal becomes active. This preliminary detection phase confirms proper grounding and connection integrity, ensuring that when the driving power is subsequently connected, no surge will occur. The sequence is enforced: detection power first, then driving power only after successful detection.

The patent implements feedback by using the detection power terminal to monitor and verify the connection status before enabling the driving power terminal. The system continuously checks the grounding and connection integrity through the detection power path, and only when proper feedback is received confirming safe connection conditions does the system activate the driving power. This feedback mechanism ensures reliability while maintaining fast connection speed.