一种散热风扇的调速驱动及异常检测电路
By integrating an adjustable speed fan drive and anomaly detection circuit, the problem of large area and high cost of fan detection circuits in the prior art is solved, and flexible fan speed adjustment and detection of various abnormal states are realized.
CN120592898BActive 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 occupy a large PCB area, are costly, cannot adjust fan speed, and cannot detect various abnormal states.
Method used
It integrates an adjustable fan drive circuit and multiple abnormality detection circuits, and realizes fan speed regulation and detection of multiple abnormal states through a current amplification drive module, a logic control module and a sampling detection module.
Benefits of technology
It achieves fan status detection with simple PCB layout and low cost, and can flexibly adjust fan speed and detect a variety of abnormal states.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN120592898B_ABST
Abstract
本发明属于集成电路技术领域，特别涉及一种散热风扇的调速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，从而对风扇进行调速；采样检测模块，与逻辑控制模块和所述LDO的VIN端口相连，通过采样电阻对风扇的电流进行采样并转换为电压V0，将该电压V0与基准电压Vref进行比较后输出电压信号至电平移位电路。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，具备PCB板布局简单和成本低的突出优势。
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