Shanghai, China - Suming Semiconductor, a leading one-stop provider of driver ICs in China, continues to delve into the field of isolation drives and recently officially released the first single channel IGBT/SiC isolation driver SLMi33x with DESAT protection function in China. The chip is equipped with fast desaturation (DESAT) fault detection function, Miller clamp function, drain open circuit fault feedback, soft shutdown function, and optional self recovery mode. It is compatible with optocoupler isolation drivers and provides high-quality and high-performance alternative solutions for customer engineers.
By adopting industry-leading dual capacitor isolation technology and "OOK" transmission technology, SLMi33x achieves isolation voltage of 5kVrms and isolation surge voltage of up to 10kV, and has a common mode transient immunity (CMTI) of over 100kV/us (Min.), meeting the high requirements of SiC power devices for CMTI, ensuring reliability and stability in extremely harsh working environments. The DESAT threshold of SLMi33x is 6.5V or 9V, with a maximum driving current of 1.5A, 2.5A, and 4.0A. It can be widely used in motor drive, high-power frequency converters, uninterruptible power supply (UPS), EV charging, inverters, and other application scenarios.
SLMi33xPerformance advantages
L&Nbsp& Nbsp;Stronger anti negative pressure ability
L&Nbsp& Nbsp;Shorter maximum latency
L&Nbsp& Nbsp;Wider voltage range on input and output sides
L&Nbsp& Nbsp;Higher CMTI value and better anti-interference ability
The typical application circuit of SLMi33x in IGBT three-phase bridge is shown in Figure 1. During normal operation, Anode and Cathode receive control signals from the controller, and VOUT outputs driving signals to drive the opening and closing of IGBT. When short circuit protection occurs, the VCE voltage of IGBT is detected by DESAT. When the voltage on DESAT is higher than 6.5V or 9.0V, the VOUT output is turned off and transmitted to the control terminal side, and the fault is pulled down.
Figure 1. Typical application circuit diagram of SLMi33x
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The pin definition and packaging of SLMi33x are shown in Figure 2, which is packaged as a SOIC16 wide body and provides a creepage and gap distance greater than 8mm.
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Figure 2. SLMi33x Pin Definition and Packaging
目前SLMi33x已在各大变频器、逆变器等不同领域通过了客户测试，有12种系列产品可供选择，申请样片请邮件至&Nbsp;sales@sillumin.com.
Figure 3. SLMi33x Selection Guide
About Digital Semiconductor
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上海数明半导体有限公司成立于2013年，聚焦于研发高性能、高可靠的模拟芯片并提供系统的整体解决方案。以客户为中心、市场为导向、质量为根本，专注服务于工业控制、电源管理、光通讯、新能源及汽车等终端应用领域。公司总部位于上海，在深圳、青岛等地均设有分支机构或办事处.
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