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Charging and discharging management method and integrated circuit of mobile power supply

A charge and discharge management, mobile power technology, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problems of large occupied volume and complex structure of charge and discharge management circuits, reducing area, improving portability, reducing volume effect

Active Publication Date: 2018-03-20
钰泰半导体股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing charge and discharge management circuit has a complex structure and takes up a large volume

Method used

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  • Charging and discharging management method and integrated circuit of mobile power supply
  • Charging and discharging management method and integrated circuit of mobile power supply
  • Charging and discharging management method and integrated circuit of mobile power supply

Examples

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Embodiment Construction

[0024] Such as figure 1 As shown, the traditional mobile power supply charging and discharging management circuit includes: an isolated power MOS tube 107, an IN terminal capacitor 110, an OUT terminal capacitor 111, a BAT terminal capacitor 113, a step-up / down converter inductor 112, a first SWITCH switch 101, the second SWITCH switch 104, the step-up / down conversion controller 105, the first voltage dividing resistor 110 and the second voltage dividing resistor 117 connected in series between the IN terminal and the ground, the comparator 106, connected in series at the OUT terminal and the third voltage dividing resistor 114, the fourth voltage dividing resistor 115, and the output voltage operational amplifier 116 between ground and ground; wherein, the first SWITCH switch 101 is provided with a substrate selection circuit 102 and a substrate selection circuit 103 to isolate the power MOS tube 107 is provided with its substrate selection circuit 108 and substrate selection...

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Abstract

The invention provides a charge and discharge management method for a mobile power supply and an integrated circuit. The management method comprises a step of initializing the circuit to output a pulse square wave and a step of detecting and judging a voltage value of an OUT port; and the integrated circuit comprises the OUT port, a BAT port, a boost-buck controller, a first electronic switch, a converter inductor, a first divider resistor, a second divider resistor, a third divider resistor, an operational amplifier, a multi-channel selection switch and a first comparator. Compared with the prior art, an IN port and a boost converter OUT pin in an existing charge and discharge management circuit are combined into a pin OUT port; whether a USB voltage is provided by inserting a power supply from the outside of a system or the USB voltage is provided for a USB interface inside the system through boosting of a lithium battery is specifically judged without other signal lines, such as an OTG signal line of a Micro-USB, of a USB; partial circuit can also be saved when the charge and discharge management function is achieved; the area of the overall circuit is reduced; the volume of a product is reduced; and the portability of the product is improved.

Description

technical field [0001] The invention relates to a charging and discharging management method and circuit, in particular to a management method and an integrated circuit for charging and discharging of a mobile power supply. Background technique [0002] With the vigorous development of consumer electronics, the use of mobile power is becoming more and more popular. In order to realize the charging and discharging functions of the mobile power supply, and at the same time the lifting / voltage sharing switching tube, an identification circuit for the adapter insertion is required. The traditional mobile power circuit has a complex structure, and the overall volume of the circuit is relatively large, and the production cost is relatively high. Contents of the invention [0003] The technical problem to be solved by the present invention is that the existing charging and discharging management circuit has a complex structure and takes up a large volume. [0004] In order to s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0068
Inventor 张征胡央维
Owner 钰泰半导体股份有限公司