**Toshiba Launches SiC MOSFET Gate Driver with Enhanced Safety Features** **Kawasaki, Japan** -- Toshiba Electronic Devices & Storage Corporation has announced the launch of a new silicon carbide (SiC) MOSFET gate driver optocoupler, the "TLP5814H," designed to enhance safety and performance in industrial equipment. The new device, which began shipping today, features an active mirror clamp function and offers a compact SO8L package with a high output current of +6.8A/-4.8A. This innovation is particularly significant for applications that use MOSFETs or IGBTs in series, such as inverters, where the device can prevent potential misoperations and short circuits during the off state of the lower arm. **Key Features and Benefits:** 1. **Active Mirror Clamp Function:** - One of the primary challenges in circuits using MOSFETs or IGBTs in series, like inverters, is the occurrence of mirror currents during the off state of the lower arm. These currents can cause the gate voltage to rise, leading to misoperations and potentially dangerous short circuits between the upper and lower arms. - Traditionally, the solution to this problem has been to apply a negative voltage to the gate during the off state. However, this approach can be challenging with SiC MOSFETs, which are known for their high voltage tolerance, low on-resistance, and fast switching characteristics. Some SiC MOSFETs cannot accommodate a sufficient negative gate-to-source voltage. - The TLP5814H addresses this issue by incorporating an active mirror clamp circuit. This circuit diverts mirror currents from the gate to ground, effectively preventing misoperations and short circuits without the need for a negative gate voltage. This feature not only enhances safety but also simplifies the design and reduces costs. 2. **High Output Current:** - The TLP5814H offers a high output current of +6.8A/-4.8A, which is crucial for driving high-power SiC MOSFETs efficiently. This high current capability ensures robust and reliable operation, even in demanding industrial environments. 3. **Compact SO8L Package:** - Despite its advanced features, the TLP5814H is housed in a compact SO8L package. This small form factor makes it easier to integrate into existing and new industrial designs, contributing to the miniaturization and optimization of power electronics systems. **Technical Background:** - **Mirror Currents and Misoperations:** - In inverter circuits, when the lower arm MOSFET or IGBT is turned off, a mirror current can flow through the device, causing the gate voltage to rise. This can lead to unintended turn-on of the upper arm device, resulting in a short circuit and potential damage to the system. - Traditional methods to prevent this issue involve applying a negative voltage to the gate of the lower arm device, which can be complex and costly. The active mirror clamp function in the TLP5814H provides a simpler and more cost-effective solution. - **SiC MOSFETs:** - SiC MOSFETs are a type of power semiconductor that offer several advantages over conventional silicon-based MOSFETs, including higher voltage ratings, lower on-resistance, and faster switching speeds. These properties make SiC MOSFETs ideal for high-power and high-frequency applications in industrial equipment. - However, the high switching speeds and low on-resistance of SiC MOSFETs can also make them more susceptible to misoperations caused by mirror currents. The TLP5814H is specifically designed to mitigate these risks. **Market Impact:** - The introduction of the TLP5814H is expected to have a positive impact on the industrial electronics market, particularly in sectors that rely heavily on high-power inverters and other power conversion systems. By providing a more reliable and cost-effective solution for managing mirror currents, Toshiba is helping to drive the adoption of SiC MOSFETs in a broader range of applications. - The compact size and high performance of the TLP5814H make it an attractive option for designers looking to optimize their power electronics systems. This could lead to more efficient and safer industrial equipment, ultimately benefiting both manufacturers and end-users. **Availability:** - The TLP5814H is now available for shipment, allowing customers to immediately integrate this advanced technology into their designs. Toshiba has emphasized the importance of this product in meeting the growing demand for high-reliability and high-performance gate drivers in industrial applications. **Conclusion:** - The TLP5814H represents a significant advancement in the field of SiC MOSFET gate drivers. By integrating an active mirror clamp function, Toshiba has provided a solution that enhances the safety and reliability of industrial electronics systems while also reducing design complexity and costs. This product is well-positioned to support the continued growth and innovation in the high-power semiconductor market, making it a valuable addition to Toshiba's portfolio of advanced electronic components. **Notes:** 1. **Lower Arm:** Refers to the lower MOSFET or IGBT in a series circuit, typically responsible for the low-side switching. 2. **Mirror Current:** A current that flows through a device when it is turned off, potentially causing unintended gate voltage changes. 3. **Short Circuit:** An unintended electrical connection between the upper and lower arms in a circuit, which can lead to system failure and damage. This summary captures the essential elements of the news article, highlighting the key features and benefits of the TLP5814H, its technical background, market impact, and availability.