Isolated gate driver and power device drive system including same
A technology of power equipment and isolation barrier, applied in the field of power equipment drive system, can solve problems such as fixing, and achieve the effects of stability improvement, fuel efficiency improvement, and efficiency optimization
Active Publication Date: 2019-05-31
HYUNDAI MOBIS CO LTD
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- Application Information
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Problems solved by technology
[0007] like figure 1 As shown in , since traditional isolated gate drivers control the slew rate through an external resistor with a fixed resistance value, there are limitations that the slew rate of the gate voltage of the power device is only fixed to the initial design value
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[0042]Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete so that a full understanding of the present disclosure will be given. Also, in the drawings, the size of components may be exaggerated or reduced for illustrative purposes.
[0043] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments should be regarded as illustrative and not restrictive, and the scope of the present invention is not limited only to the following embodiments.
[0044] figure 2 is a diagram illustrating a power device dr...
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The present disclosure relates to isolated gate drivers and power device drive systems including the same. The isolated gate driver includes: a low-voltage part, including a PWM transmission unit and a low-voltage logic block; an insulating part for boosting a low-voltage PWM signal and a low-voltage control signal into a high-voltage PWM signal and a high-voltage control signal; A high-voltage part of the component insulation, the high-voltage part includes: a high-voltage logic block for outputting a slew rate control signal according to a high-voltage control signal; a slew rate controller having a slew rate dependent on the slew rate control signal at the falling edge; and a slew rate feedback unit including a slew rate measurement unit for measuring the slew rate of the gate voltage and allowing the slew rate controller to change the gate voltage conversion rate.
Description
[0001] Cross-references to related applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2016-0095550 filed with the Korean Intellectual Property Office on July 27, 2016, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to a power device driving system, and more particularly, to a power device driving system including an isolated gate driver and an isolated gate for driving a power device for a vehicle pole drive. Background technique [0004] Recently, as the sales of eco-friendly vehicles increase, power devices such as IGBT (Insulated Gate Bipolar Transistor) or SiC (Silicon Carbide) have been increasingly used for driving Conversion) switchgear for electric vehicle or hybrid vehicle systems. [0005] Additionally, isolated gate drivers are increasingly being used to drive such power devices. In an isolated gate driver, the slope (slew rate) of th...
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IPC IPC(8): H02M1/08
CPCH02M1/08H03K17/163H01L25/07H01L25/16H02M1/0029H03K17/04123H03K17/6872H03K2217/0036H01L23/64H02M1/088H03K17/0828H03K17/18H03K17/567
Inventor 李舜燮
Owner HYUNDAI MOBIS CO LTD