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Voltage level shifting device and method of operation thereof

一种转换装置、电压电平的技术，应用在输出功率的转换装置、逻辑电路接口装置、逻辑电路连接/接口布置等方向，能够解决升压集成电路成本高、升压集成电路最低运行电压充放电效率局限等问题

Active Publication Date: 2018-12-04
DELTA ELECTRONICS INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of the step-up integrated circuit is relatively high. Moreover, considering the technical requirements, the minimum operating voltage (operation voltage) and charge-discharge efficiency of the step-up integrated circuit are quite limited.

Method used

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  • Voltage level shifting device and method of operation thereof
  • Voltage level shifting device and method of operation thereof
  • Voltage level shifting device and method of operation thereof

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Embodiment Construction

[0051] Hereby, the technical content and detailed description of the present invention are described as follows in conjunction with the accompanying drawings:

[0052] see figure 1 It is a schematic block diagram of a voltage level conversion device of the present invention. The voltage level shifting device includes a first level shifting unit 10 , a second level shifting unit 20 , a charging unit 30 and a discharging unit 40 . The first level conversion unit 10 receives a reference voltage Vref and a power supply voltage Vcc to output a boosted voltage Vs. Wherein the boosted voltage Vs is equal to the sum of the reference voltage Vref and the power supply voltage Vcc. That is, Vs=Vref+Vcc. In other words, if the reference voltage Vref is 20 volts and the power supply voltage Vcc is 12 volts, then the boosted voltage Vs output by the first level conversion unit 10 is 32 volts. The second level conversion unit 20 is connected to the first level conversion unit 10 to recei...

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PUM

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Abstract

The invention discloses a voltage level conversion device comprising a first level conversion unit, a second level conversion unit, a charging unit and a discharging unit. The first level conversion unit receives the reference voltage and the power supply voltage to output the boosted voltage. The second level conversion unit is connected to the first level conversion unit to receive the boost voltage. The charging unit receives the control voltage to provide the output voltage. The discharging unit is connected to the charging unit, and receives the control voltage and the reference voltage. When the control voltage turns on the charging unit and turns off the discharging unit, the charging unit is charged by the boosted voltage, so that the boosted voltage is the output voltage provided by the charging unit. When the control voltage turns off the charging unit and turns on the discharging unit, the discharging unit is discharged by the output voltage. The present invention can overcome the limitation of the minimum operating voltage.

Description

technical field [0001] The present invention relates to a voltage level shifting device and its operating method, in particular to a voltage level shifting device applied to a motor drive circuit and its operating method. Background technique [0002] At present, high-speed switching application product designs on the market, such as the upper bridge drive circuit of the brushless DC motor (BLDC motor), and the energy control circuit of the light-emitting diode (LED), all require high-voltage drive circuits. The driving voltage level often needs to be higher than the system input voltage. [0003] As far as the prior art is concerned, since a booster integrated circuit (charge pump IC) can be easily manufactured to increase the driving voltage level, it is widely used in the industry. However, the cost of the step-up integrated circuit is relatively high. Moreover, considering the technical requirements, the minimum operating voltage and charge-discharge efficiency of the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/00H02P23/00
CPCH03K17/687H03K19/017509H03K2217/0063H03K2217/0081
Inventor 林哲弘黄跃龙陈彦宏
Owner DELTA ELECTRONICS INC
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