一种低发热的发光元件驱动电路
By combining a voltage regulator, a multiplexer, a VIN voltage detector, and a shared resistor, the heat generation problem of the light-emitting element driving circuit under high power supply voltage and high current was solved, enabling a wider power supply voltage range and higher power application requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DIOO MICROCIRCUITS CO LTD
- Filing Date
- 2026-04-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing LED driver circuits struggle to effectively reduce heat generation and improve driving efficiency under a wider power supply VIN input voltage range and greater current requirements. In particular, the external resistor design of the shunt unit makes it difficult to balance high current output and high power supply voltage limits.
It adopts a combination structure of voltage regulator, multiple voltage selector, VIN voltage detector, constant current source, switch and shared resistor. By flexibly adjusting the thermal shared resistor, the thermal management of the drive circuit is optimized, realizing thermal sharing and power consumption sharing.
It broadens the applicable range of power supply voltage VIN, reduces the heat generation of the drive circuit, and meets the application requirements of higher input/output power.
Smart Images
Figure CN122028256B_ABST