Gatedriving circuits are a crucial part of the safety, compliance, and performance of switched-mode power converters. Traditionally, these circuits use a single pulse and employ a gate resistor to control silicon (Si) MOSFETs. Unfortunately, the performance of this approach is limited by parasitic inductances, which can cause excessive oscillations, voltage stress, and catastrophic false turn-ON failures. As a result, power conversion applications typically sacrifice performance with respect to increased transient times and switching losses to maintain safe operation. This work proposes a simple multi-pulse (MP) driving sequence that enables reduced transient times and switching losses while keeping oscillations and voltage stress low. With this, the performance can be increased while upholding safety margins of the switched-mode power converter. The concepts and derived equations are verified by circuit simulations and experiments showcasing up to 25% loss reduction in the driver-stage, up to .2% efficiency improvement in the power-stage, and up to 18X oscillation amplitude reduction compared to the conventional approach. Moreover, the proposed sequence and driving circuit achieve reliable operation in extreme slew-rate conditions beyond the capabilities of the traditional approach, resulting in voltage stress reduction and false turn-ON failure mitigation.

中文翻译：

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利用栅极环路电感的多脉冲 Si-MOSFET 栅极驱动

栅极驱动电路是开关模式电源转换器的安全性、合规性和性能的关键部分。传统上，这些电路使用单脉冲并采用栅极电阻器来控制硅 (Si) MOSFET。不幸的是，这种方法的性能受到寄生电感的限制，寄生电感可能导致过度振荡、电压应力和灾难性的错误开启故障。因此，电源转换应用通常会牺牲性能，以增加瞬态时间和开关损耗，以维持安全运行。这项工作提出了一种简单的多脉冲 (MP) 驱动序列，可以减少瞬态时间和开关损耗，同时保持较低的振荡和电压应力。这样，可以提高性能，同时保持开关模式电源转换器的安全裕度。这些概念和推导方程经过电路仿真和实验验证，与传统方法相比，驱动级损耗降低高达 25%，功率级效率提高高达 0.2%，振荡幅度降低高达 18 倍。此外，所提出的序列和驱动电路在超出传统方法能力的极端转换速率条件下实现了可靠运行，从而减少了电压应力并减轻了错误导通故障。