一种H桥电流检测电路
By using an H-bridge current detection circuit with a dual-detection structure, the current is replicated using NMOS and PMOS current mirrors, and combined with operational amplifiers and rail-to-rail amplifiers, the problems of high resistance loss and low accuracy in traditional current detection are solved, achieving efficient and accurate current detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHU RES INST OF XIAN UNIV OF ELECTRONIC SCI & TECH
- Filing Date
- 2022-12-15
- Publication Date
- 2026-07-17
AI Technical Summary
In traditional stepper motor drive equipment, the H-bridge current detection circuit suffers from problems such as high resistance loss, high power consumption, and low detection accuracy. Especially in high current detection, excessively large resistance leads to excessively high costs, while excessively small resistance makes it difficult to accurately detect the current value.
The H-bridge current detection circuit with a dual detection structure uses NMOS and PMOS current mirrors to reduce and replicate the H-bridge current, and uses operational amplifiers and current sensing resistors for accurate feedback. Combined with rail-to-rail amplifiers to maintain voltage stability, it achieves high-precision current detection.
It achieves current detection with low resistance loss and high detection accuracy. The circuit structure is simple and can accurately detect H-bridge current values, thus improving the accuracy and efficiency of detection.
Smart Images
Figure CN115792359B_ABST