DC-DC boosted circuit using open circuit protection function in LED (Light-emitting Diode) module

The invention discloses a DC-DC boosted circuit using an open circuit protection function in an LED (Light-emitting Diode) module, and belongs to the technical field of automobile lighting. The DC-DCboosted circuit comprises an input end protection circuit, a boosted circuit and an open circuit protection circuit, wherein the input end protection circuit is connected with a power supply; the boosted circuit is connected with the input end protection circuit; the open circuit protection circuit is connected with an LED light string; the LED light string is connected with the boosted circuit; aswitch pin SW, a power inductor L2 and a Schottky diodes D3 and D4 of an MPQ2483 integrated circuit module U1 in the boosted circuit form a boosted topology loop; the MPQ2483 integrated circuit module U1 in the boosted circuit drives the LED light string; each LED in the LED light string is connected with one double-end protector PL06B in the open circuit protection circuit in parallel. The circuit is high in output curre