A Hybrid Capacitor-Inductance Charger Architecture and Its Charging Mode Switching Control Method

A hybrid capacitor and inductance charging technology, applied in charging/discharging current/voltage regulation, current collectors, battery circuit devices, etc. , the effect of simple structure and high application value

Active Publication Date: 2022-03-29
SOUTHCHIP SEMICON TECH SHANGHAI CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a hybrid capacitor inductance charger architecture and its charging mode switching control method, which mainly solves the problem that the existing switched capacitor charger cannot work under the condition of fixed input high voltage and the application occasions are limited

Method used

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  • A Hybrid Capacitor-Inductance Charger Architecture and Its Charging Mode Switching Control Method
  • A Hybrid Capacitor-Inductance Charger Architecture and Its Charging Mode Switching Control Method
  • A Hybrid Capacitor-Inductance Charger Architecture and Its Charging Mode Switching Control Method

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Embodiment

[0032] Such as figure 2 , 3 As shown, a hybrid capacitor-inductance charger architecture disclosed in the present invention includes a power transistor Q1, a power transistor Q2 whose drain is connected to the drain of the power transistor Q1, and a power transistor Q3 whose drain is connected to the source of the power transistor Q1. , the power transistor Q4 whose drain is connected to the source of the power transistor Q2, and the capacitor C whose anode is connected to the source of the power transistor Q1 FLY1 , the capacitor C whose anode is connected to the source of the power transistor Q2 FLY2 , source and capacitor C FLY1 The power transistor Q5 connected to the cathode and the drain connected to the source of the power transistor Q4, the source and the capacitor C FLY2 The power transistor Q6 connected to the cathode and the drain of the power transistor Q3 is connected to the source, and the drain is connected to C FLY1 The power transistor Q8 connected to the...

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Abstract

The invention discloses a hybrid capacitor-inductance charger architecture and a charging mode switching control method thereof, which mainly solves the problem that the existing switched capacitor charger cannot work under the condition of fixed input high voltage and the application occasions are limited. The charger architecture includes a total of 10 power transistors, 5 capacitors and an inductor. Among them, Q1-Q8, CFLY1 / CFLY2 and inductor L are the main body of the charger, which realizes the voltage-current power conversion. Q9 is used to prevent flow from the battery side to V BUS The reverse current is normally constant conduction mode. Q10 realizes the detection and protection of the charging current, works in the linear control mode in the trickle charging stage, and works in the constant conduction mode in the constant current and constant voltage charging stages. C1, C2 and C3 are filter capacitors. Through the above design, the present invention realizes high-power and high-efficiency charging under fixed high-voltage input conditions, without adding additional protocol chips at the adapter end and the mobile phone end, thereby reducing costs. Therefore, it is suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of lithium-ion battery chargers, in particular to a hybrid capacitor-inductor charger architecture and a charging mode switching control method thereof. Background technique [0002] Due to the demand for high-power charging of electronic devices such as mobile phones, the current charger architecture is rapidly developing in the direction of high-power. When the charging power reaches a certain level, the traditional buck charging architecture cannot meet the requirements due to its low efficiency. [0003] Such as figure 1 As shown, it is the solution selected by most mobile phone manufacturers in the high-power charging architecture, including a main charger (buck charger) and a slave charger (switched capacitor charger). Among them, the buck charger works in the trickle charging and constant voltage charging stages of the entire charging cycle, and the switched capacitor charger works in the constant c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/007Y02B40/00
Inventor 梁星
Owner SOUTHCHIP SEMICON TECH SHANGHAI CO LTD
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