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    • 5. 发明授权
    • Composite semiconductor device with turn-on prevention control
    • 具有开启防止控制的复合半导体器件
    • US09362905B2
    • 2016-06-07
    • US13415779
    • 2012-03-08
    • Jason Zhang
    • Jason Zhang
    • H01L29/30H03K17/30H03K17/10H03K17/16H03K17/567
    • H03K17/30H03K17/107H03K17/168H03K17/567H03K2017/6875
    • There are disclosed herein various implementations of composite III-nitride semiconductor devices having turn-on prevention control. In one exemplary implementation, a normally OFF composite semiconductor device comprises a normally ON III-nitride power transistor and a low voltage (LV) device cascoded with the normally ON III-nitride power transistor to form the normally OFF composite semiconductor device. The LV device is configured to have a noise-resistant threshold voltage to provide the turn-on prevention control for the normally OFF composite semiconductor device by preventing noise current from flowing through a channel of the normally ON III-nitride power transistor in a noisy system.
    • 这里公开了具有开启防止控制的复合III族氮化物半导体器件的各种实现方式。 在一个示例性实施方式中,正常关闭复合半导体器件包括通常为ON III族氮化物功率晶体管和与常规ON III族氮化物功率晶体管共同组成的低电压(LV)器件,以形成正常关闭复合半导体器件。 LV装置被配置为具有抗噪声阈值电压,以通过防止噪声电流在噪声系统中流过正常导通的III族氮化物功率晶体管的沟道来为正常关闭复合半导体器件提供导通防止控制 。
    • 6. 发明授权
    • III-nitride switching device with an emulated diode
    • 具有仿真二极管的III族氮化物开关器件
    • US09263439B2
    • 2016-02-16
    • US12800902
    • 2010-05-24
    • Jason Zhang
    • Jason Zhang
    • H01L27/06H01L27/085H03K17/687H01L21/8252
    • H01L27/0255H01L21/8252H01L27/0605H01L27/0629H01L27/085H01L29/2003H01L29/205H01L29/7787H01L29/872H03K17/687
    • Some exemplary embodiments of a III-nitride switching device with an emulated diode have been disclosed. One exemplary embodiment comprises a GaN switching device fabricated on a substrate comprising a high threshold GaN transistor coupled across a low threshold GaN transistor, wherein a gate and a source of the low threshold GaN transistor are shorted with an interconnect metal to function as a parallel diode in a reverse mode. The high threshold GaN transistor is configured to provide noise immunity for the GaN switching device when in a forward mode. The high threshold GaN transistor and the low threshold GaN transistor are typically fabricated on the same substrate, and with significantly different thresholds. As a result, the superior switching characteristics of III-nitride devices may be leveraged while retaining the functionality and the monolithic structure of the inherent body diode in traditional silicon FETs.
    • 已经公开了具有仿真二极管的III族氮化物开关器件的一些示例性实施例。 一个示例性实施例包括制造在包括跨越低阈值GaN晶体管的高阈值GaN晶体管的衬底上的GaN开关器件,其中低阈值GaN晶体管的栅极和源极与互连金属短路以用作并联二极管 在反向模式。 高阈值GaN晶体管被配置为当处于正向模式时为GaN开关器件提供抗噪声能力。 高阈值GaN晶体管和低阈值GaN晶体管通常制造在相同的衬底上,具有明显不同的阈值。 结果,可以利用III族氮化物器件的优异的开关特性,同时保持传统硅FET中固有体二极管的功能和单片结构。
    • 9. 发明授权
    • Gate driving scheme for depletion mode devices in buck converters
    • 降压转换器中耗尽型器件的栅极驱动方案
    • US07839131B2
    • 2010-11-23
    • US12163100
    • 2008-06-27
    • Bo YangJason ZhangMichael A. Briere
    • Bo YangJason ZhangMichael A. Briere
    • G05F1/40
    • H02M3/1588H02J7/0018H02J7/345Y02B40/90Y02B70/1466Y10T307/747
    • A circuit comprising a gate driver including first and second switching stages for driving respective sync and control switches, at least one of which is a normally ON depletion mode device, and another circuit connected to the first and second switching stages and including first and second circuits. The first circuit is coupled to the first switching stage and to the sync switch, the first switching stage having a first state wherein the sync switch is on, and a second state wherein a first bias voltage is switched to the gate of the sync switch to turn it off. The second circuit has a first state wherein the control switch is on when the sync switch is off, and a second state wherein the control switch is switched off when the sync switch is on by switching a second bias voltage to the gate of the control switch.
    • 一种包括栅极驱动器的电路,包括用于驱动相应的同步和控制开关的第一和第二开关级,其中至少一个是正常耗尽型器件,以及连接到第一和第二开关级的另一个电路,包括第一和第二电路 。 第一电路耦合到第一开关级和同步开关,第一开关级具有第一状态,其中同步开关导通,以及第二状态,其中第一偏置电压切换到同步开关的栅极至 把它关掉。 第二电路具有第一状态,其中当同步开关断开时控制开关接通;以及第二状态,其中当同步开关接通时,通过将第二偏置电压切换到控制开关的门,控制开关断开 。