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A protocol chip and a fast charging source voltage regulator controller containing the protocol chip

A protocol chip and charging source technology, applied in the field of fast charging source voltage regulator controller, can solve the problems of high cost and many protocol chip pins, and achieve the effects of low cost, small number of pins, and flexible and controllable output voltage

Active Publication Date: 2021-08-03
NANJING QINHENG MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to solve the problem of more pins and higher cost of the protocol chip due to the feedback capacitance in the fast charging circuit in the prior art, the present invention provides a protocol chip

Method used

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  • A protocol chip and a fast charging source voltage regulator controller containing the protocol chip
  • A protocol chip and a fast charging source voltage regulator controller containing the protocol chip

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Experimental program
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Embodiment Construction

[0024] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0025] Such as figure 1 , a protocol chip, used for fast charging of various protocols such as USB Power Delivery power adapter and BC, and can also be used for fast charging of other protocols, without limitation. The protocol chip includes an ADC unit, an iteration unit, a DAC unit, voltage dividing resistors R1, R2 and a gain unit, the voltage dividing resistor is connected to the detection signal, the input end and the output end of the iteration unit are respectively connected to the ADC unit and the DAC unit, and the ADC unit and the dividing The piezoresistor is connected, and the gain unit includes a detection input terminal and a reference input terminal, the detection input terminal is connected to the voltage dividing resistor, the reference input terminal is connected to the output terminal of the DAC unit, and the output terminal o...

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Abstract

The invention discloses a protocol chip and a fast charging source voltage regulating controller containing the protocol chip, including an ADC unit, an iterative unit, a DAC unit, a voltage dividing resistor and a gain unit, the voltage dividing resistor is connected to a detection signal, and the input of the iterative unit The terminal and the output terminal are respectively connected to the ADC unit and the DAC unit, the ADC unit is connected to the voltage divider resistor, the gain unit includes a detection input terminal and a reference input terminal, the detection input terminal is connected to the voltage divider resistor, and the reference input terminal is connected to the output terminal of the DAC unit , the output terminal of the gain unit outputs an adjustment signal, and the iterative unit is implemented by a software program: according to the relative size of the voltage of the detection signal and the target voltage, the output signal of the DAC unit is gradually changed multiple times, and the target voltage is gradually reached through multiple iteration adjustments . The protocol chip and fast charging source voltage regulation controller of the present invention have fewer circuit components, simple structure, small volume, fewer chip pins, low cost, and flexible voltage regulation control.

Description

technical field [0001] The invention relates to the technical field of fast charging, in particular to a protocol chip and a fast charging source voltage regulating controller containing the protocol chip. Background technique [0002] With the growth of market demand for fast charging sources, more and more manufacturers have invested in the field of protocol power charging adapters, and have improved their competitiveness in terms of cost, volume, and efficiency. The traditional fast charging circuit design generally includes protocol chips, resistors, capacitors, inductors, MOSFETs, diodes and other components. The protocol chip communicates with the receiving end to obtain the target voltage value required by the other party, and then adjusts its own voltage output capability. [0003] Such as figure 1 As shown, the traditional method is to adjust the output voltage by using a closed-loop system composed of a high-gain operational amplifier and an integral circuit. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02M3/157H02M1/08
CPCH02M1/08H02M3/157H02J7/00036H02J7/007182H02J2207/20
Inventor 王春华
Owner NANJING QINHENG MICROELECTRONICS CO LTD