Delay protection control circuit

• Main Authors: ZHAO SHUNHUI, HUANG CHENGYAN, LIAO SHIBO
• Format: Patent
• Language: Chinese; English
• Published: 05.08.2022
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

The utility model provides a time-delay protection control circuit, which is applied to a switching power supply, a switching power supply loop associated with the time-delay protection control circuit comprises an output control circuit, a power output circuit and a feedback circuit, and the time-delay protection control circuit comprises a current sensing circuit, a voltage-stabilizing power supply circuit and a time-delay control circuit. The output control circuit is electrically connected with the feedback circuit and the power output circuit, the load and the current sensing circuit are electrically connected with the output end of the power output circuit, the voltage stabilizing circuit is electrically connected with the feedback circuit and the delay control circuit, and the delay control circuit is electrically connected with the feedback circuit and the current sensing circuit. When the output end of the current sensing circuit is over-current, the delay control circuit delays to output a control s