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Gate driving device and method

A gate drive and pole drive technology, applied in the field of gate drive devices based on adaptive slew rate control, can solve the problems of increasing switching loss of power switch and reducing switching node voltage, etc.

Pending Publication Date: 2022-02-15
NUVOLTA TECH (HEFEI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, reducing the slew rate of the switch node voltage may increase the switching losses of the power switch

Method used

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  • Gate driving device and method
  • Gate driving device and method
  • Gate driving device and method

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Embodiment Construction

[0021] The implementation and application of preferred embodiments of the present disclosure will be discussed in detail below. It should be appreciated, however, that the present disclosure provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of some specific ways to make and apply the disclosure, and do not limit the scope of the disclosure.

[0022] This disclosure will describe some preferred embodiments in the specific context, namely, adaptive slew rate control based gate drive apparatus and methods. However, the present disclosure is also applicable to various other gate driving systems. Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0023] figure 1 A block diagram of a gate drive controller according to an embodiment of the disclosure is shown. The gate drive controller ...

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Abstract

A method is disclosed, and the method comprises the steps: detecting a signal connected to a switching node of a power switch; detecting a gate driving voltage of the power switch; in a gate driving process of the power switch, reducing a gate driving current based on a first comparison result obtained by comparing a signal with a first threshold value; and increasing the gate driving current based on a second comparison result obtained by comparing the gate driving voltage with a second threshold value in the gate driving process of the power switch.

Description

technical field [0001] The present invention relates to a gate driving device and method, and in some specific embodiments, relates to a gate driving device and method based on adaptive slew rate control. Background technique [0002] With the continuous advancement of technology, various electronic devices (such as mobile phones, tablet computers, digital cameras, MP3 players and / or other similar electronic devices) have become popular. Each electronic device can be powered by a power converter. [0003] A power converter, such as a buck converter, includes two power switches connected in series. The ungrounded first power switch is called the high-side switch. The second power switch, which is grounded, is called the low-side switch. The common node of the high-side switch and the low-side switch serves as the switching node of the power converter. The low-side gate drive circuit and the high-side gate drive circuit are used to control the gates of the low-side switch ...

Claims

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Application Information

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IPC IPC(8): H02M1/088H02M1/44
CPCH02M1/088H02M1/44H03K5/12H03K17/04206H03K17/165
Inventor 陈俊晓杨莹莹
Owner NUVOLTA TECH (HEFEI) CO LTD
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