一种高可靠性低成本的可调速风扇驱动及异常检测电路
By integrating an adjustable-speed fan driver and multiple fault detection circuits, the problem of large area and high cost of fan detection circuits in existing technologies is solved. This enables flexible fan status detection and speed adjustment, reduces chip temperature, improves reliability, and reduces costs.
CN120759784BActive Publication Date: 2026-07-17WUXI I CORE ELECTRONICS
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUXI I CORE ELECTRONICS
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing fan detection circuits have drawbacks such as large PCB board footprint, high cost, and inability to detect various abnormal states and adjust fan speed.
Method used
The chip integrates an adjustable speed fan drive circuit and multiple abnormal detection circuits. Through the combination of a current amplification drive module, a logic control module, an open circuit and stall detection module, and a short circuit detection module, it achieves flexible detection and speed adjustment of the fan status.
Benefits of technology
It achieves low-cost, low-footprint multi-fan status detection, and can flexibly adjust fan speed, reduce chip temperature, and improve reliability.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN120759784B_ABST
Abstract
本发明属于集成电路技术领域，特别涉及一种高可靠性低成本的可调速风扇驱动及异常检测电路。包括：扩流驱动模块，为风扇提供经LDO稳压后的电压FCC，并对所述LDO的输出电流进行扩流以驱动风扇；逻辑控制模块，与扩流驱动模块相连，通过调节控制信号ADJ<n:0>以改变LDO输出的电压FCC的值；开路和堵转检测模块，与逻辑控制模块和所述LDO的VIN端口相连；短路检测模块，与逻辑控制模块和LDO的输出端相连，并输出信号至状态标志位FTO上，根据该状态标志位FTO的波形和电平高低，判断风扇是否为正常工作、开路、堵转或短路状态。本发明集成了可调速的风扇驱动电路以及实现多种风扇异常状态的检测功能。
Need to check novelty before this filing date? Find Prior Art