Switching power supply control system of multiple voltage levels

A multi-voltage level, switching power supply technology, applied in the electronic field, can solve the problems of inability to select, limited selection range of power devices, and inability to fully drive power tubes, etc., to achieve high driving voltage, widen the selection range, and economical chip area. Effect

Inactive Publication Date: 2011-04-27
成都成电硅海科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technique allows for better performance at lower voltages without sacrificing accuracy or reducing cost-effectiveness compared to existing techniques like pulse width modulation (PWM) dimming systems used on switches.

Problems solved by technology

Technics: In this patented technology, there were two main technical problem addressed during designation phase: Firstly, due to limitations associated with current designs where large components like passive elements have been added or removed, the input voltage needed was increased compared to previous versions, making it difficult to maintain consistency across different types of loads. Secondly, because these systems require multiple steps at once, they had issues with achieving precise voltage levels over wide ranges.

Method used

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  • Switching power supply control system of multiple voltage levels
  • Switching power supply control system of multiple voltage levels
  • Switching power supply control system of multiple voltage levels

Examples

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Embodiment Construction

[0014] see Figures 2 to 4 .

[0015] The present invention includes a first-stage voltage adjustment module 101, a second-stage voltage adjustment module 102, a low-voltage control module 103 and a high-voltage control module 104. The first-stage voltage adjustment module 101 includes a depletion MOSFET device 3, an operational amplifier 13, The feedback loop formed by the third resistor R3 and the fourth resistor R4, the output terminal of the operational amplifier 13 is connected to the gate of the depletion MOSFET device 3, the drain of the depletion MOSFET device 3 is the high voltage input terminal, and the source is the first stage The output terminal of the voltage adjustment module 101 is connected to the second-stage voltage adjustment module 102, and the source of the depletion MOSFET device 3 is also connected to the negative input terminal of the operational amplifier 13 through the third resistor R3, and the negative input terminal of the operational amplifier 13 G

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Abstract

The invention discloses a switching power supply control system of multiple voltage levels, and relates to electronic technology. The system comprises a first level voltage adjusting module, a second level voltage adjusting module, a low-voltage control module and a high-voltage control module, wherein the first level voltage adjusting module comprises a feedback circuit consisting of a depletionmetal oxide semiconductor field effect transistor (MOSFET) device and an operational amplifier, and the source of the depletion MOSFET device is the output end of the first level voltage adjusting module; and a level conversion circuit is connected in series between the low-voltage control module and the high-voltage control module, and the level conversion circuit is also connected with the output end of the first level voltage adjusting module and the output end of the second level voltage adjusting module. The system can provide higher driving voltage at the same time of ensuring the control precision and broaden the model selection range of an external power device.

Description

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Claims

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Application Information

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Owner 成都成电硅海科技股份有限公司
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