用于网络处理芯片的片上电源产生电路设计  

Design of on-Chip Power Generation Circuit for Networking Processing Chip

作　　者：闫振林 温芝权 张兵 靳新波 史顺达 YAN Zhenlin;WEN Zhiquan;ZHANG Bing;JIN Xinbo;SHI Shunda(XEL Technology,Inc.,Suzhou 215000,China)

机构地区：[1]苏州雄立科技有限公司,江苏苏州215000

出　　处：《电子与封装》2022年第10期42-47,共6页Electronics & Packaging

摘　　要：设计了一种用于网络处理芯片的片上电源产生电路,它包括高精度带隙基准电路、缓冲驱动电路、4个快速响应低压差线性稳压器(LDO)电路和异常检测电路。该电路通过4个LDO分别给存储器、搜索引擎算法内核、时钟管理和控制逻辑独立供电,提高了细分功能模块的电源稳定性。异常检测电路在电路异常时产生错误信号,快速关断电源,提高整体芯片供电可靠性。电路采用28 nm工艺实现。测试结果表明,该电路提供的最大负载电流达200 mA,满足网络芯片系统需求。An on-chip power generation circuit for a network processing chip is designed.It includes a high-precision bandgap reference circuit,a buffer driver circuit,4 fast response low dropout regulator(LDO)circuits and an abnormal detection circuit.It powers the memory,search engine algorithm core,clock management and control logic independently by 4 LDOs,which improves the stability of power for each circuit module.When the circuit is abnormal,an error signal is generated by the abnormal detection circuit to quickly turn off the power and improve the power reliability of the whole chip.The circuit is realized by 28 nm process.The test results show that the maximum load current provided by the circuit is up to 200 mA,which meets the requirements of network chip systems.

关 键 词：路由查找 LDO 电源产生 电压检测 

分 类 号：TN402[电子电信—微电子学与固体电子学] TP393[自动化与计算机技术—计算机应用技术]