STMicroelectronics Reveals Intelligent Automotive Circuit Breaker Featured for Flexibility and Functional Safety
STMicroelectronics Reveals Intelligent Automotive Circuit Breaker Featured for Flexibility and Functional Safety
STMicroelectronics has commenced production of automotive high-side power switches with proprietary intelligent fuse protection and a serial peripheral interface (SPI) for diagnostic data, permitting enhanced resilience and functional safety.
意法半導體已開始生產帶有專有智能保險絲保護和串行外設接口（SPI）的汽車高側功率開關，用於診斷數據，可實現增強恢復能力和功能安全。
The quad-channel VNF9Q20F is the first in a new family of monolithically integrated devices that combine ST's advanced VIPower M0-9 MOSFET and proprietary STi2Fuse technology. Based on patented I2t (current squared through time-to-fuse) functionality, the STi2Fuse responds within 100μs to turn off the MOSFET if excessive current is detected.
四通道VNF9Q20FVNF9Q20F在超負荷時可執行具有高精度的過載響應的64個可編程電流限制值，採用STi2Fuse專有電路實現了智能熔斷保護，能夠增強電路帶電穩定性，防止過流/短路導致損壞。
Performing as an intelligent circuit breaker, the VNF9Q20F enhances boardnet voltage stability and prevents PCB traces, connectors, and wire harnesses from overheating. While guarding against damaging overloads, ST's new automotive power switch also has a capacitive charging mode that allows harmless inrush currents and so permits normal operation with highly capacitive loads.
傳感器可以精確測量電源板上每個設備單獨的電流負載值，使設備保持在額定電流以下。電路保護和時序管理現在是一個消費電子設備設計中越來越重要的領域，隨着汽車電子設備的電子化，也越來越受到關注。
Ready for the latest zonal electrical/electronic architectures, the VNF9Q20F is also used for fuse and relay replacement, ECU isolation, and managing systems that are active when the vehicle is parked. With 64 programmable current-limit values, the STi2Fuse lets designers determine the overload response with high precision.
爲最新的區域電子電氣結構做好準備，VNF9Q20F還用於插座和繼電器的替換、ECU隔離以及在車輛停止時管理系統。STi2Fuse的64個可編程限流值讓設計人員能夠高精度地確定過載響應。
Internal features including a 10-bit analog-to-digital converter (ADC) and fault registers allow rich diagnostic information and digital current sense feedback to support vehicle capabilities such as predictive maintenance. By providing diagnostics through the SPI, and with built-in self-test, the VNF9Q20F enables systems to meet specified safety integrity levels in accordance with ISO 26262. An embedded failsafe mode preserves operational status in the event of a failure or malfunction.
內部功能包括10位模擬到數字轉換器（ADC）和故障寄存器，可提供豐富的診斷信息和數字電流感應反饋，以支持車輛的預測性維護等能力。通過SPI提供診斷，並具有內置自檢功能，VNF9Q20F使系統能夠根據ISO 26262達到指定的安全完整性水平。嵌入式強制模式在發生故障或故障時保持操作狀態。
The VNF9Q20F is in production now, in a 6mm x 6mm QFN package, and available from $2.850 for 1000 pieces.
分析師團隊剛剛選出他們認爲投資者現在可以買入的10只最佳股票……而超微電腦不在其中。有可能這10只被選出的股票未來幾年會產生巨大回報。VNF9Q20F現已開始生產，採用6mm x 6mm QFN封裝，1000件售價$2.850。
For further information please visit www.st.com/vnf9q20f
更多信息請訪問www.st.com/vnf9q20f
譯文內容由第三人軟體翻譯。