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A power management circuit

A power management and power management chip technology, applied in circuit devices, emergency power arrangements, electrical components, etc., can solve problems affecting power supply quality and power supply safety, disordered and simple power supply methods, etc., to improve power supply quality and power supply safety. Effect

Active Publication Date: 2018-12-04
CHNEGDU CHIFFO ELECTRONICS INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since external power supply and internal battery power supply may exist at the same time, it is necessary to continue to choose the power supply mode. However, the existing power supply function is simple, and the power supply mode may be disordered due to voltage instability during the power supply process, which will affect the quality of power supply. Power supply security

Method used

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Embodiment 1

[0014] figure 1Shown is a power management circuit diagram of the present invention, including a power management chip LTC2951, the chip pin 1 is connected to the first resistor R28, the second resistor R60, the first capacitor C31, and the battery interface, and the first capacitor C31 is another One end is grounded, the other end of the first resistor R28 is connected to the chip pin 2 and the external switch button, and the other end of the second resistor R60 is connected to the chip pin 8, the second capacitor C13, the third resistor R59, The first operational amplifier N4B output terminal, the second operational amplifier N4A output terminal, the third operational amplifier N4D output terminal, the chip pin 3 is connected to the third capacitor C59, the other end of the third capacitor C59, the second capacitor The other end of C13 and the other end of the third resistor R59 are grounded, the input "-" end of the first operational amplifier N4B is connected to the fourth...

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PUM

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Abstract

The invention discloses a power supply management circuit. A power supply management chip LTC2951 and a peripheral circuit are adopted to realize the arrangement of a power reflectometer power supply. The power supply management circuit enables a power supply to be safely switched in different power supply manners by setting power supply manner switching conditions, and a correct power supply manner can be selected when the power is turned on and off, so that the power supply quality and the power supply safety are improved.

Description

technical field [0001] The invention relates to the field of power supplies, in particular to a power supply management circuit. Background technique [0002] Power reflectometers are commonly used to measure the power of radio frequency (RF) or microwave frequency (MW) signals. A typical power reflectometer uses a power detector or transducer to convert RF or MW power into an easily measurable electrical quantity. Power reflectometers also have applications in many types of RF and MW systems. However, the radio frequency power reflectometer usually needs a specific power supply to power it when it is used. [0003] Since external power supply and internal battery power supply may exist at the same time, it is necessary to continue to choose the power supply mode. However, the existing power supply function is simple, and the power supply mode may be disordered due to voltage instability during the power supply process, which will affect the quality of power supply. Power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06
CPCH02J9/061
Inventor 李杰蒋承武
Owner CHNEGDU CHIFFO ELECTRONICS INSTR