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Multi-channel independent current limiting output single-chip intelligent power supply with load state detection function

A load state detection and state detection technology, applied in the direction of collectors, electric vehicles, electrical components, etc., can solve the problems of high cost, poor safety, large size of mobile power supply, etc., to reduce the PCB board area, prevent large current The effect of load shock and development cost reduction

Active Publication Date: 2014-06-04
成都拓尔微电子有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a single-chip intelligent power supply with multi-channel independent current-limiting output with load status detection, so as to solve the problems of large volume, high cost and poor safety of existing mobile power supplies

Method used

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  • Multi-channel independent current limiting output single-chip intelligent power supply with load state detection function
  • Multi-channel independent current limiting output single-chip intelligent power supply with load state detection function
  • Multi-channel independent current limiting output single-chip intelligent power supply with load state detection function

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like figure 1 and figure 2 As shown, the single-chip intelligent power supply with multiple independent current-limiting outputs for load status detection includes a USB input interface, and the MOS transistor T1, MOS transistor T2, and MOS transistor T3 connected to the USB input interface are connected in sequence, and are connected to the MOS transistor T1 at the same time. The control chip IC connected to the tube T1, the MOS tube T2 and the MOS tube T3 is connected to the inductance L1, the resistor Ra and the battery between the MOS tube T2 and the MOS tube T3 after being connected in sequence, and the control chip IC includes a central controller MCU, Two load state detection and current limiting output units connected to the central controller MCU, one end of the load state detection and current limiting output unit is connected between the MOS transistor T1 and the MOS transistor T2, and the other end is connected to the external load. In this embodiment, the...

Embodiment 2

[0031] like image 3 As shown, the difference from Embodiment 1 is that the MOS transistor T2 is also connected in parallel with a Schottky diode D1.

Embodiment 3

[0033] like Figure 4 As shown, the difference from Embodiment 1 is that MOS transistor T1, MOS transistor T2 and MOS transistor T3 are integrated in the control chip IC, and the gates of MOS transistor T1, MOS transistor T2 and MOS transistor T3 are respectively connected to the central controller MCU .

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Abstract

The invention discloses a multi-channel independent current limiting output single-chip intelligent power supply with a load state detection function. The power supply solves the problem that an existing movable power supply is large in size, high in cost and poor in safety. The intelligent power supply comprises a USB input interface, an MOS tube T1, an MOS tube T2, an MOS tube T3 and a control chip IC, wherein the MOS tube T1, the MOS tube T2, the MOS tube T3 and the control chip IC are connected with the USB input interface after being sequentially connected, the control chip IC comprises a central controller MCU and at least one load state detection and current limiting output unit connected with the central controller MCU, one end of the load state detection and current limiting output unit is connected between the MOS tube T1 and the MOS tube T2, and the other end of the load state detection and current limiting output unit is connected with an external load. The load state detection and current limiting output unit is arranged in the control chip IC, so that states, such as insertion, plugging, short-circuit, overcurrent, of each load can be detected independently, complete impendence of multi-channel output is achieved, cost is low, safety is high, expansibility is high, and the power supply is very suitable for being popularized and used in a large scale.

Description

technical field [0001] The invention relates to a multi-channel independent current-limiting output single-chip intelligent power supply with load state detection, which belongs to the field of mobile power supply and intelligent charging. Background technique [0002] The power supply provides electric energy for many electronic devices. With the rapid development of electronic technology today, the power supply is also continuously improved along with the improvement of various electronic products. With the continuous development of smart phones, tablets and other mobile digital products, mobile power supplies have gradually developed into A complete market, the future mobile power will continue to develop in the direction of light, thin and small. [0003] In the existing dual-channel intelligent charging solution, the power supply requires two independent charging control chips and supporting external components, such as inductors, capacitors and field effect transistor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 何爱萍陈恬翟小娟
Owner 成都拓尔微电子有限责任公司
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