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该论文提出了一种DC至35MHz的全集成单电源隔离放大器，用于功率电子中的电流和电压检测前端。它解决了高频开关（如GaN/SiC器件）下需要宽带宽隔离检测以实现精确软开关的问题。
Increased switching frequency of power devices for power electronics allows for compact and lightweight circuit implementations for variety of applications, including power factor corrections, DC/DC converters, and motor drive inverters. In particular, recent advances in GaN/SiC devices have pushed the switching frequency into the MHz range, which requires soft switching operation to minimize switching losses caused by the increased frequency. To achieve accurate soft switching operation in the MHz range, wideband isolated current and/or voltage sensing with bandwidth of at least 10MHz is mandatory, but few existing solutions have such a wide bandwidth and the ones that do are expensive. The combination of a shunt/divider resistor and a conventional isolation amplifier with isolated power transfer shown in Fig. 18.7.1 offers a relatively cost-effective solution because it eliminates the need for supply generation on the high-voltage
Satoshi Takaya, Hiroaki Ishihara, Kohei Onizuka
Toshiba, Kawasaki, Japan