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Power supply architecture capable of dynamic regulation in a wide region

A dynamic adjustment and wide-ranging technology, applied in the direction of adjusting electrical variables, control/regulation systems, electrical components, etc., can solve problems such as increasing power supply costs, volume and design complexity, and reducing power supply efficiency

Inactive Publication Date: 2009-03-04
叶燕霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The adjustment of the output voltage in the prior art is mainly through the switching of multiple main input voltages. In this way, when the output voltage adjustment range is wide, in order to quickly adjust and improve the output voltage adjustment accuracy, more main input voltages are required. source, which greatly increases the cost, size and design complexity of the power supply
At the same time, in order to further improve the accuracy of output voltage regulation, the existing technology must increase the input of the correction voltage source, and the correction voltage source needs to be coupled to the main input voltage through a transformer with a high frequency response bandwidth, which further increases the cost, volume and design complexity of the power supply. degree, reducing the efficiency of the power

Method used

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  • Power supply architecture capable of dynamic regulation in a wide region
  • Power supply architecture capable of dynamic regulation in a wide region
  • Power supply architecture capable of dynamic regulation in a wide region

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Embodiment Construction

[0031] The core idea of ​​the present invention is: the input wide-range DC voltage is first step-down and stabilized by an efficient and simple non-isolated high-frequency switch step-down DC / DC conversion unit into a suitable intermediate bus voltage V1, and the intermediate bus voltage V1 is then passed through the rear stage The high-efficiency and simple open-loop isolated DC / DC conversion unit composed of power switch tubes with a fixed duty cycle converts the intermediate bus voltage V1 into an output voltage V. At the same time, the non-isolated high-frequency switch step-down DC / DC conversion unit receives the first feedback adjustment signal of the output voltage from the user, and can quickly and dynamically adjust its output intermediate bus voltage V1 in a wide range at any time. Due to the open-loop isolation DC / DC conversion unit Working in an open-loop state, its output voltage changes with the rapid change of the intermediate bus voltage V1 in a wide range.

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Abstract

The embodiment of the invention discloses a power architecture which can be dynamically regulated in a wide range, relating to the power electronic field, wherein, the power architecture comprises: a non-isolation high-frequency switch buck DC / DC conversion unit, which outputs the voltage to an open loop isolation conversion unit after pre-regulating the voltage according to a first feedback regulating signal simultaneously when setting self output voltage; an open loop isolation DC / DC conversion unit which receives the DC voltage output by the non-isolation high-frequency switch buck DC / DC conversion unit, carries out high-efficient isolation and conversion, and outputs the DC voltage; and an isolation signal transmission unit, which transmits the first feedback regulating signal for outputting the voltage to the non-isolation high-frequency switch buck DC / DC conversion unit. The power architecture which can be dynamically regulated in a wide range is a wide-range high-efficient dynamic regulation power architecture which has low cost, simple design, high power density and high reliability, and can realize the change of dynamic and quick regulation in a wide range of the output voltage.

Description

technical field [0001] The invention relates to the field of power electronics, in particular to an adjustable power supply architecture. Background technique [0002] Power supplies are widely used in products in communication, communication and other fields, requiring that the output voltage of the power supply can be dynamically adjusted and changed in a wide range and quickly according to load changes or other requirements. For example, the power amplifier power supply requires the output voltage to be between about 16V and 31V, and it can be quickly and dynamically adjusted. In order to meet the requirement that the output voltage can be adjusted rapidly and dynamically in a wide range, the prior art meets the requirement by quickly switching multiple main input voltages and superimposing a correction voltage. [0003] attached figure 1 It is a power supply architecture capable of rapidly and dynamically adjusting output voltage in a wide range according to an embodim...

Claims

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Application Information

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IPC IPC(8): H02M3/315
Inventor 叶燕霞
Owner 叶燕霞
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