I2C接口电路以及芯片
By designing the switching module logic inversion and introducing the regulation module in the I2C interface circuit, the leakage and power consumption problems under high power supply voltage were solved, and stable and low-power I2C communication was achieved.
CN120523769BActive Publication Date: 2026-07-17SHANGHAI AWINIC TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI AWINIC TECH CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
The I2C interface circuit has leakage problems under high power supply voltage, which leads to circuit instability and increased power consumption.
Method used
The second and third switch modules are designed with opposite conduction logic, and the fourth switch module is designed with opposite conduction logic to the first switch module, to ensure that no path from the power supply voltage to ground is formed under different power supply voltages, and an adjustment module is introduced to regulate the quiescent current.
Benefits of technology
Reduce leakage risk, improve circuit stability, reduce power consumption, and ensure the reliability and low quiescent current of I2C communication.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN120523769B_ABST
Abstract
本申请提供了一种I2C接口电路以及芯片。该I2C接口电路包括：第一开关模块的第一端连接到接地电压；第二开关模块的一端与第一开关模块的控制端连接，用于在第一开关模块导通的情况下关断，在第一开关模块关断的情况下导通；第三开关模块的一端与电源电压连接，另一端与第二开关模块的另一端连接，用于随着第一开关模块的导通而导通；第四开关模块的一端与电源电压连接，用于随着第二开关模块的导通而导通，随着第三开关模块的导通而关断，在导通的情况下关断第三开关模块；输出接口连接在第四开关模块的另一端与第一开关模块的第二端之间，用于将接地电压到电源电压作为I2C信号的输出电压域。如此，能够减少漏电风险，提升电路的稳定性。
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