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Circuits and methods for strengthening load transient response compensation

A circuit and power supply technology, applied in the field of enhanced load transient response compensation, can solve problems such as system voltage fluctuation, reset, and operating voltage drop of electronic devices

Active Publication Date: 2019-05-07
WISTRON CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] When the user connects an external device (such as a hot-swappable peripheral device) to the electronic device, a momentary large current may be generated, which may cause the system voltage of the electronic device to fluctuate
When the instantaneous current is too large, it may cause the working voltage to drop, making the working voltage lower than the system demand, which will cause the system and electronic devices to malfunction or reset

Method used

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  • Circuits and methods for strengthening load transient response compensation
  • Circuits and methods for strengthening load transient response compensation
  • Circuits and methods for strengthening load transient response compensation

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Embodiment Construction

[0029] Other scopes of application of the circuit and method for enhancing load transient response compensation of the present invention will be apparent in the detailed description provided below. It must be understood that the following detailed description and specific examples, while presenting exemplary embodiments of circuits and methods for enhancing load transient response compensation, are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0030] figure 1 is a circuit diagram showing a circuit 100 for enhancing load transient response compensation according to an embodiment of the present invention. In this embodiment, the circuit 100 for enhancing load transient response compensation is coupled between the electronic device and an external device 120, and may include a comparator 110, a first MOSFET Q1 , a second MOSFET Q2, a resistor R1 and a capacitor C1. The comparator 110 has a non-inverting input terminal, an inv...

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Abstract

A circuit and a method for strengthening load transient response compensation are provided; the circuit includes a comparator, a first MOSFET and a second MOSFET. The comparator compares a system voltage of an electronic device with a reference voltage. The first MOSFET is coupled to the comparator and a first power supply. The second MOSFET is coupled to the comparator and a second power supply of the electronic device. When an external device is connected to the electronic device such that the system voltage is lower than the reference voltage, the comparator outputs a low-level signal and the first MOSFET becomes conductive, so that the external device is powered by the first power supply.

Description

technical field [0001] The present invention relates to a circuit and method for strengthening load transient response compensation, in particular to a circuit for strengthening load transient response compensation for supplying power to an external device through a capacitor when the connection of the external device causes the system voltage to be lower than a reference voltage and method. Background technique [0002] When a user connects an external device (such as a hot-swappable peripheral device) to the electronic device, a momentary large current may be generated, thereby causing the system voltage of the electronic device to fluctuate. However, when the instantaneous current is too large, the working voltage may drop, making the working voltage lower than the system requirement, and then causing the system and the electronic device to malfunction or reset. Therefore, how to quickly switch the power supply to cope with the excessive instantaneous current when the sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56
CPCH03K17/145H03K17/162H03K19/00361H03K17/668H03K17/102
Inventor 黄丞伟王信方王彦翔曾俊霖黄伯彦
Owner WISTRON CORP
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