M-LVDS driver and transceiver
By adding a driving tube control circuit, a substrate voltage selection circuit and a negative voltage protection circuit to the driving circuit of the M-LVDS driver, the stability and reliability problems caused by the narrow withstand voltage range of the M-LVDS driver are solved, and high stability and reliability operation under different voltage environments are achieved.
CN119727696APending Publication Date: 2025-03-28SHENZHEN STATE MICROELECTRONICS CO LTD
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Patent Information
- Application Number
- CN202411523533.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
The narrow voltage withstand range of M-LVDS drivers leads to low stability and reliability of system circuits, especially in different voltage environments, which may cause abnormal device opening, overcurrent and damage.
Method used
An M-LVDS driver is designed, which is used to prevent high-voltage backsinking, avoid parasitic diode opening, and handle negative voltage environments by adding a driver control circuit, a substrate voltage selection circuit and a negative voltage protection circuit, respectively, to improve the stability and reliability of the driver.
Benefits of technology
Effectively improves the stability and reliability of M-LVDS drivers over a wide voltage range, prevents device damage and ensures system safety and reliability.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides an M-LVDS driver and a transceiver, the M-LVDS driver comprises a driving circuit, a driving tube control circuit, a substrate voltage selection circuit and a negative voltage protection circuit, the driving circuit comprises a current source, a first driving tube module and a second driving tube module; the driving tube control circuit is additionally arranged on the structure of the first driving tube module and can be used for preventing high voltage from flowing back to a current source when the output bus is high voltage, so that the circuit generates large current and the device is damaged; a substrate voltage selection circuit is additionally arranged on the structure of a first driving tube module and can be used for preventing device failure caused by starting of a parasitic diode of a driving tube in the first driving tube module when an output bus is in positive high voltage; by adding the negative voltage protection circuit on the structure of the second driving module, the negative voltage protection circuit can be used for preventing device failure caused by starting of a parasitic diode of a driving tube in the second driving tube module when the output bus is in a negative voltage state, so that the reliability of the driver in a wide voltage range is ensured.
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