Toshiba Electronic Devices & Storage Corporation Unveils Bluetooth® Low Energy SoC with Long-distance Communication and Low Power Consumption
The SoC realized the highest link budget with low power consumptionTOKYO--Toshiba Electronic Devices & Storage Corporation (“Toshiba”) today unveiled a Bluetooth® low energy System-on-Chip (SoC) for IoT devices compliant with Version 5.0 standard, that realizes a 113dB link budget, the highest yet achieved, and a high transmission power efficiency of 22%. These characteristics push the SoC’s long-distance communication to 600m, 4.6 times that of its predecessor  while cutting power consumption to about 70% that of standard products that support the same communication distance. Toshiba presented the technology at VLSI Circuits Symposium 2018, the international conference on semiconductor devices held in Honolulu, Hawaii on June 19.
Continued advances in IoT technology is bringing new capabilities to fields as diverse as wearable devices and medical equipment, and advanced functionality is taking more and more computing to the edge, particularly into industrial systems. Progress here is based on developing advanced functions. For instance wireless communication ICs must be able to deliver long-distance communications without consuming too much power. This is the need Toshiba addresses with its new SoC.
Bluetooth® low energy is the de facto standard for wireless communications. However, typical Bluetooth® low energy SoCs generate harmonic emission when output power increases, and can potentially violate Federal Communications Comission regulations. Additionally suppression of harmonic emission and efficiency is a trade-off that has made it difficult to achieve both long-distance communication and low power consumption.
Toshiba has developed two technologies for the power amplifiers of Bluetooth® low energy SoCs that minimizes the problem.
First, a new technology to enhance suppression of harmonic emission. This is usually done by symmetry feedback that extends to the drivers. However, this does not suppress harmonic emission generated in the final output from the power amplifiers. If symmetry feedback is applied, including in the final stage, it only results in further transient harmonic emission. Toshiba minimized this problem by adding a “presetter” that suppresses transient harmonic emission.
Secondly, Toshiba improved efficiency in the output stage of power amplifiers. This contains two switch transistors. When both are turned on, a large “through-current” flows, and power consumption increases. Toshiba developed a structure to separately control these switches, successfully suppressing through-current.
In combination, these technologies extend the communication range while suppressing harmonic emission and reducing power consumption.
Toshiba started to ship samples of Bluetooth® low energy SoCs compliance with Version 5.0 standard with the new technologies in January this year, and plans to start mass production in September. Toshiba continues to promote R&D in technologies for wireless communication ICs, and to contribute advances in IoT devices.
 Link budget refers to the difference between transmission power (in dBm) and the sensitivity of the receiver (in dBm). The larger the link budget means the further the communication.
 In Bluetooth® low energy SoCs compliant with version 5.0. As of January, 2018. Toshiba Electronic Devices & Storage Corporation
 TC35678, Toshiba Electronic Devices & Storage Corporation’s earlier product
 Symmetry feedback senses the asymmetry of waveform and then adjusts them to achieve symmetry.
 A presetter circuit in power amplifiers is set to a predicted convergence before symmetry feedback starts.
* The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc.
Comparison of conventional technology and proposed technology
Communication distance vs link budget
Mixed Signal IC Sales and Marketing Department
Sales and Marketing Group II
- 大联大世平集团推出基于 NXP 的 BMS 一体机解决方案
- 缤特力推出全新商务系列耳机 助力解决开放式办公的噪音难题
- CISSOID 和泰科天润（GPT）达成战略合作协议，携手推动碳化硅功率器件的广泛应用
- 瑞萨电子推出 R-Car E3 SoC，为汽车大显示屏仪表盘带来高端3D 图形处理性能
- Vicor 推出 10kW PowerTablet™ AC-DC 转换器
- 赛普拉斯推出智能无故障存储平台， 搭载 Arm 处理器以提升安全性和可靠性
- 在汽车应用中转向 USB Type-C™ 供电
- 意法半导体推出更快、更灵活的探针，简化 STM8 和 STM32 案上及现场代码烧写流程
- 【拆解评测】NILLKIN 魔碟4无线充电器使用评测<四>--接收机拆解
- 【拆解评测】NILLKIN 魔碟4无线充电器使用评测<三>--发射机拆解
- 【拆解评测】NILLKIN 魔碟4无线充电器使用评测<二>--无线充电效率测试
- 【拆解评测】NILLKIN 魔碟4无线充电器使用评测<一>
- 【完结】翻译：DESIGNING CONTROL LOOPS for LINEAR and SWITCHING POWER SUPPLIES第二章