Efficient multi-mode DC-DC converter in wide voltage conversion range

A DC-DC, wide-voltage technology, applied in the field of converters, to achieve the effect of over-temperature

Inactive Publication Date: 2009-11-11
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the Burst control mode is different from the PFM control mode,

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  • Efficient multi-mode DC-DC converter in wide voltage conversion range
  • Efficient multi-mode DC-DC converter in wide voltage conversion range
  • Efficient multi-mode DC-DC converter in wide voltage conversion range

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings:

[0024] See figure 1 , 2, 3, 4, 5, high-efficiency wide voltage conversion range multi-mode DC-DC converter, including: Buck-Boost power conversion module 100, drive module 200, band gap reference module 300, IC internal power supply module 400, waveform generator module 500. Working mode selection module 600, protection module 700, voltage detection module 800, current detection module 900, soft start module 1000, PWM controller module 1100 and LDO controller module 1200; Buck-Boost power conversion module 100 and power input , The power output terminal, the drive module 200 and the current detection module 900 are connected to provide a current detection signal to the current detection module 900; the drive module 200 is connected to the Buck-Boost power conversion module 100, the PWM controller module 1100 and the LDO controller module 1200 Connected, the driv...

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Abstract

The invention discloses an efficient multi-mode DC-DC converter in a wide voltage conversion range. The multi-mode DC-DC converter comprises a Buck-Boost power conversion module, a driving module, a band gap reference module, an IC internal power supply module, a waveform generator module, a working mode selection module, a protection module, a voltage detection module, a current detection module, a soft starting module, a PWM controller module and an LDO controller module. The multi-mode DC-DC converter can realize total integration of a switching tube and a synchronous rectifying tube, and is externally connected with an inductor and an output filter capacitor; the input voltage range is 2.5 to 5.5 volts, the output voltage range of 2.5 to 5.5 volts is adjustable, the maximum output current is 1,000 milliamperes, the maximum working frequency is 1MHz, the precision of the output voltage is less than 5 percent, and a system enters an intermittent working mode during light load to realize the integral system efficiency of more than 80 percent; a control loop adopts double-loop control of voltage and current, realizes the control of a PWM mode and a PFM mode, and can realize LDO control in a specific voltage conversion range; and the over-temperature, over-voltage and over-current protection functions are realized.

Description

Technical field: [0001] The invention belongs to the field of converters. The invention relates to a DC-DC converter that provides a regulated power supply for battery-powered portable electronic equipment. Background technique: [0002] With the rapid development of semiconductor technology, portable electronic products have been rapidly developed. Therefore, the requirements of electronic products on power sources are becoming more and more demanding, requiring their power converters to have small size, high power density, high reliability, high efficiency and lower power. cost. Obviously, the traditional linear power system has been unable to meet the requirements in terms of size, efficiency, performance and reliability. However, the switching power supply has gradually become increasingly popular due to its small size, light weight, low loss, high efficiency, and wide application range. Replace the traditional linear power supply and become the mainstream product of the powe...

Claims

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Application Information

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IPC IPC(8): H02M3/00H02M3/135H02M1/32
Inventor 范世全耿莉李世杰王轲王胜磊高源
Owner XI AN JIAOTONG UNIV
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