CN203326875U - Power source management module based on DC-DC and LDO - Google Patents
Power source management module based on DC-DC and LDO Download PDFInfo
- Publication number
- CN203326875U CN203326875U CN2013204125986U CN201320412598U CN203326875U CN 203326875 U CN203326875 U CN 203326875U CN 2013204125986 U CN2013204125986 U CN 2013204125986U CN 201320412598 U CN201320412598 U CN 201320412598U CN 203326875 U CN203326875 U CN 203326875U
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- voltage
- circuit
- power source
- source management
- management module
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Abstract
The utility model discloses a power source management module based on a DC-DC and an LDO. The power source management module comprises a cell, a connector, a power source management chip, a DC-DC voltage conversion circuit and a low drop-out linear voltage regulator circuit. The cell is connected with the power input terminal of the power source management chip through the connector; the output terminal of the power source management chip is connected with the input terminals of the DC-DC voltage conversion circuit and the low drop-out linear voltage regulator circuit respectively; the output terminal of the DC-DC voltage conversion circuit is connected with a load A; and the output terminal of the low drop-out linear voltage regulator circuit is connected with a load B. The characteristics of the DC-DC voltage conversion circuit and the low drop-out linear voltage regulator circuit are combined and based on different voltages that loads need, different voltage regulation conversion circuits are selected, thereby reducing extra consumption of the energy of a power source, prolonging the service life of a circuit, and improving the conversion efficiency of the circuit.
Description
Technical field
The utility model relates to a kind of power management module, particularly relates to a kind of power management module based on DC-DC and LDO.
Background technology
Power supply, be the most important condition of electronic product work, yet the required operating voltage difference of each part of electronic product, therefore the power supply of electronic product need provide different voltage, therefore need a power management module, manages and distributes different voltage.Now for the existing a series of correlation technique of electronic product power source management, some power management modules adopt the DC-DC voltage conversion circuit to supply voltage is changed and voltage stabilizing, some power management modules adopt low-dropout linear voltage-regulating circuit to carry out voltage transitions and voltage stabilizing to supply voltage, these two kinds of power management modules can convert supply voltage to the load required voltage, but deposit following problem.
For the power management module that adopts the DC-DC voltage conversion circuit, in the situation that the difference of supply voltage and load required voltage is less, the conversion efficiency of supply voltage is lower, and output ripple is large.
For the power management module that adopts low-dropout linear voltage-regulating circuit, in the situation that the difference of supply voltage and load required voltage is larger, because pressure drop is larger, make power supply energy consume on extra device in a large number, produce a large amount of heats, shortened the working life of circuit, simultaneously, circuit conversion efficiency is low; And low-dropout linear voltage-regulating circuit can only be for step-down, the situation that is greater than supply voltage for the load required voltage is inapplicable.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of power management module based on DC-DC and LDO is provided, this module combines the characteristics of DC-DC voltage conversion circuit and low-dropout linear voltage-regulating circuit, in the situation that for the less low-dropout linear voltage-regulating circuit that adopts of difference of supply voltage and load required voltage, can improve the PSRR of power supply, realize isolated from power, the load required voltage of stable output; And large or load required voltage is greater than next employings of the situation DC-DC voltage conversion circuit of supply voltage in the difference of supply voltage and load required voltage, can improve the conversion efficiency of circuit, the consumption of minimizing power supply energy on additional devices.
The purpose of this utility model is achieved through the following technical solutions: a kind of power management module based on DC-DC and LDO, it comprises battery, connector, power management chip, DC-DC voltage conversion circuit and low-dropout linear voltage-regulating circuit, battery connects the power input of power management chip by connector, the output of power management chip connects respectively the input of DC-DC voltage conversion circuit and low-dropout linear voltage-regulating circuit, the output termination load A of DC-DC voltage conversion circuit, the output termination load B of low-dropout linear voltage-regulating circuit.
The beneficial effects of the utility model are: according to required load voltage difference, adopt different voltage stabilizing change-over circuits, thereby reduced the extra consumption of power supply energy, what extended circuit is useful life, improved the conversion efficiency of circuit, simultaneously, load required voltage that can stable output, guaranteed the stability of circuit working.
The accompanying drawing explanation
Fig. 1 is the utility model structured flowchart.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection range of the present utility model is not limited to the following stated.
As shown in Figure 1, a kind of power management module based on DC-DC and LDO, it comprises battery, connector, power management chip, DC-DC voltage conversion circuit and low-dropout linear voltage-regulating circuit, battery connects the power input of power management chip by connector, the output of power management chip connects respectively the input of DC-DC voltage conversion circuit and low-dropout linear voltage-regulating circuit, the output termination load A of DC-DC voltage conversion circuit, the output termination load B of low-dropout linear voltage-regulating circuit.Select different voltage conversion circuits according to supply voltage from the situation of the difference of load required voltage, thereby export different magnitudes of voltage.
Claims (1)
1. the power management module based on DC-DC and LDO, it is characterized in that: it comprises battery, connector, power management chip, DC-DC voltage conversion circuit and low-dropout linear voltage-regulating circuit, battery connects the power input of power management chip by connector, the output of power management chip connects respectively the input of DC-DC voltage conversion circuit and low-dropout linear voltage-regulating circuit, the output termination load A of DC-DC voltage conversion circuit, the output termination load B of low-dropout linear voltage-regulating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204125986U CN203326875U (en) | 2013-07-12 | 2013-07-12 | Power source management module based on DC-DC and LDO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204125986U CN203326875U (en) | 2013-07-12 | 2013-07-12 | Power source management module based on DC-DC and LDO |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326875U true CN203326875U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204125986U Expired - Fee Related CN203326875U (en) | 2013-07-12 | 2013-07-12 | Power source management module based on DC-DC and LDO |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203326875U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104754162A (en) * | 2013-12-25 | 2015-07-01 | 佳能株式会社 | Image Forming Apparatus Using Technique For Controlling Power Supply |
| CN106935268A (en) * | 2015-12-31 | 2017-07-07 | 北京同方微电子有限公司 | A kind of nonvolatile memory dual power supply manages circuit |
-
2013
- 2013-07-12 CN CN2013204125986U patent/CN203326875U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104754162A (en) * | 2013-12-25 | 2015-07-01 | 佳能株式会社 | Image Forming Apparatus Using Technique For Controlling Power Supply |
| CN110099189A (en) * | 2013-12-25 | 2019-08-06 | 佳能株式会社 | Image forming apparatus |
| CN106935268A (en) * | 2015-12-31 | 2017-07-07 | 北京同方微电子有限公司 | A kind of nonvolatile memory dual power supply manages circuit |
| CN106935268B (en) * | 2015-12-31 | 2021-12-17 | 紫光同芯微电子有限公司 | Nonvolatile memory dual power management circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20150712 |
|
| EXPY | Termination of patent right or utility model |