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Fast charge anti-interference circuit of mobile terminal

A circuit, one-way technology, applied in circuit devices, reducing electrical interference, battery circuit devices, etc., can solve the problems of low practicability, charging stop, and high anti-interference requirements.

Inactive Publication Date: 2019-06-07
NUBIA TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The battery life of mobile terminals such as mobile phones has always been criticized. Although the battery capacity of mobile terminals is getting larger and larger, and the battery life has been improved, the long charging time is simply speechless. Therefore, in order to shorten the battery life of mobile terminals Charging time, mobile terminal manufacturers have introduced fast charging technologies, such as: Qualcomm's QC3.0, QC4.0, VIP charging, PD fast charging, oppo vooc flash charging, Meizu super mcharge fast charging, etc., in order to obtain higher charging efficiency Lower power consumption, Qualcomm's QC3.0, QC4.0, VIP charging, and PD fast charging all dynamically adjust the charging voltage and current (according to temperature, power consumption, etc.), that is, through the USB communication line D+D -Real-time communication realizes real-time adjustment and VBUS (USB power supply line) voltage dynamic adjustment, but real-time communication has extremely high anti-interference requirements for D+D-, once any unexpected interference will cause charging to stop; and VBUS voltage dynamic adjustment is also possible It will cause problems such as abnormal interruption of the charging state (such as VBUS voltage falling below UVLO), which is not very practical

Method used

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  • Fast charge anti-interference circuit of mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] see image 3 , a mobile terminal fast charging anti-interference circuit and method thereof, comprising a voltage regulation module 1, a USB_ID signal discrimination module 2, a comparator 3, a timer 4 and a charging IC5, the voltage regulation module 1 is connected to the USB_ID signal discrimination module 2, and the voltage The adjustment module 1 and the USB_ID signal discrimination module 2 are connected to the input terminal of the comparator 3, the output terminal of the comparator 3 is divided into two channels, one channel of the comparator 3 is connected to the charging IC5, and the other channel of the comparator 3 is connected to the timer 4 The input end of the timer 4 is connected to the charging IC5, and the other input end of the timer 4 is connected to the voltage regulation module 1.

[0053] see Figure 4 , a mobile terminal fast charging anti-interference circuit and method thereof, the EN terminal of the internal power supply 1 of the voltage regul...

Embodiment 2

[0055] see Figure 5 , a mobile terminal fast charging anti-interference circuit and method thereof, the EN terminal of the internal power supply 1 of the voltage regulation module 1 is grounded, the VDD terminal and the GND terminal of the power supply 1 are connected in parallel with the capacitor C1 and the capacitor C2, and the VDD terminal of the power supply 1 is connected to GND Terminal is connected in series with resistor R5 and diode D1, capacitor C1 and capacitor C2 are connected in parallel with resistor R5 and diode D1, and the VDD terminal of power supply 1 and GND terminal are connected with transformer T1, the IN+ terminal of power supply 1 is connected with resistor R3, resistor R3, capacitor The junction of C1 and capacitor C2 is connected to the GND terminal of power supply 1, the OUT terminal of power supply 1 is connected to one end of resistor R1, the other end of resistor R1 is divided into two circuits, and one circuit of resistor R1 is connected to fiel...

Embodiment 3

[0057] see Figure 6 , a mobile terminal fast charging anti-interference circuit and method thereof, the EN terminal of the internal power supply 2 of the voltage regulation module 1 is grounded, the VDD terminal and the GND terminal of the power supply 2 are connected in parallel with the capacitor C3 and the capacitor C4, and the VDD terminal and the GND terminal of the power supply 2 are connected in parallel. terminal is connected in series with resistor R6 and diode D2, capacitor C3 and capacitor C4 are connected in parallel with resistor R6 and diode D2, and the VDD terminal of power supply 2 is connected to the USB_ID terminal of comparator 3, and the GND terminal of power supply 2 is connected to V_ref terminal of comparator 3 , the IN+ terminal of power supply 2 is connected to resistor R4, the contact of resistor R4, capacitor C3 and capacitor C4 is connected to the GND terminal of power supply 2, the OUT terminal of power supply 2 is connected to one end of resistor ...

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Abstract

The invention discloses a fast charge anti-interference circuit of a mobile terminal and a method of the fast charge anti-interference circuit. A USB_ID signal discrimination module is added in a traditional charging scheme of a D+D- real-time communication, the abnormity of D+D- signal communication is inspected and discriminated through the USB_ID signal discrimination module, inspected and discriminated results are sent to a comparing unit, in terms of the situations that brief abnormity occurs in the D+D- signal communication or VBUS voltage falls below UVLO, a charging IC determines continuous charging according to outputs signals of the comparing unit, at the same time, a timer is started, after timing of the timer exceeds pre-set time (suggested to be between 10 ms and 100 ms), andif D+D- signals cannot be returned to a normal state, then charging stops, thus the situation that charging stops due to the fact that unexpected disturbance occurs or that the dynamic adjustment of the VBUS voltage is abnormal in the charging process is avoided, the fast charging scheme is not influenced, and the problems that D+D- is poor in disturbance resistance and prone to being abnormally stopped are avoided.

Description

technical field [0001] The invention relates to the technical field of hardware anti-jamming, in particular to a fast-charging anti-jamming circuit for a mobile terminal. Background technique [0002] The battery life of mobile terminals such as mobile phones has always been criticized. Although the battery capacity of mobile terminals is getting larger and larger, and the battery life has been improved, the long charging time is simply speechless. Therefore, in order to shorten the battery life of mobile terminals Charging time, mobile terminal manufacturers have introduced fast charging technologies, such as: Qualcomm's QC3.0, QC4.0, VIP charging, PD fast charging, oppo vooc flash charging, Meizu super mcharge fast charging, etc., in order to obtain higher charging efficiency Lower power consumption, Qualcomm's QC3.0, QC4.0, VIP charging, and PD fast charging all dynamically adjust the charging voltage and current (according to temperature, power consumption, etc.), that i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H04B15/02
Inventor 马柏杰范建功
Owner NUBIA TECHNOLOGY CO LTD
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