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A power management circuit and electronic equipment

A power management and circuit technology, applied in the direction of data processing power supply, electrical digital data processing, digital data processing components, etc., can solve the problems of large space and high cost of high-voltage LDO circuits, reduce production costs, save the number of occupied, The effect of saving and related circuits

Active Publication Date: 2022-03-29
HEFEI LCFC INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve the problem that the circuit that exits Dead Battery Mode uses a high-cost high-voltage LDO circuit as the core to perform a series of operations, and the problem that the high-voltage LDO circuit occupies a large space

Method used

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  • A power management circuit and electronic equipment
  • A power management circuit and electronic equipment

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no. 1 example

[0046] The first embodiment provided in this application is an embodiment of a power management circuit.

[0047] Combine below figure 1 The present embodiment is described in detail, wherein, figure 1 A schematic diagram of a power management circuit provided in an embodiment of the present application; figure 2 It is a schematic diagram of another power management circuit provided by the embodiment of the present application.

[0048] See figure 1 As shown, a power management circuit is applied to a motherboard with an NVDC architecture, including: a boost module, a conversion module and a charge controller.

[0049] The NVDC architecture, that is, narrow voltage DC charging, is a working mode architecture of the charger, which is used to limit the charging voltage value on the charger to protect the chemical substances inside the battery.

[0050] The boost module is configured to acquire a first voltage associated with a power adapter when the charge controller is in ...

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Abstract

The present application provides a power management circuit and electronic equipment. The power management circuit is applied to a motherboard with an NVDC architecture, including: a boost module, a conversion module, and a charging controller; the boost module is used in the The charging controller is in the non-battery management mode, obtains the first voltage associated with the power adapter, and raises the first voltage to the second voltage; wherein, the power adapter supplies power through the USB Type C interface; the The conversion module is configured to generate an activation voltage according to the second voltage; the charging controller is configured to enter a power supply management mode from the non-battery management mode according to the activation voltage. This application uses the characteristics of the USB PD protocol and the existing NVDC power design architecture to provide a power management solution for USB PD chips such as RTS545x and CCGx, which saves high-voltage LDOs and related circuits, reduces production costs, and reduces occupation. The space of the circuit board saves the number of interfaces occupied.

Description

technical field [0001] This application relates to the field of computer power supply, in particular to power management circuits and electronic equipment. Background technique [0002] At present, many notebook computers are equipped with Type C / Thunderbolt interface. The power adapter of USB Type C interface can supply power to the system (20V). This interface requires the integrated charging controller (USB PDcontroller) on the motherboard. When the power adapter is not connected, the system is powered off and the battery is not installed, the USB PD controller will be in the non-battery management mode (Dead Battery Mode, referred to as DB Mode). When the power adapter is plugged in, the system must make the USB PD controller exit Dead first. Battery Mode, and after the USB PD controller communicates with the power adapter, the power adapter can output 20V to supply power to the system. [0003] The circuit that exits Dead Battery Mode must meet the 20V requirements of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/26
CPCG06F1/263
Inventor 王建友张亮亮杨磊柏春高耀
Owner HEFEI LCFC INFORMATION TECH
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