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Voltage level conversion device and operation method thereof

A conversion device and voltage level technology, which is applied in the direction of output power conversion device, logic circuit interface device, logic circuit connection/interface layout, etc., can solve the limitation of charging and discharging efficiency of the minimum operating voltage of boost integrated circuits, boost integration Problems such as high circuit cost

Active Publication Date: 2016-01-27
DELTA ELECTRONICS INC
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  • Claims
  • Application Information

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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 conversion device and operation method thereof
  • Voltage level conversion device and operation method thereof
  • Voltage level conversion device and operation method 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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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 discharge unit. The first level conversion unit receives reference voltage and power supply voltage so as to output boost voltage. The second level conversion unit is connected with the first level conversion unit so as to receive boost voltage. The charging unit receives control voltage so as to provide output voltage. The discharge unit is connected with the charging unit and receives control voltage and reference voltage. When the charging unit is conducted and the discharge unit is cut off by control voltage, the charging unit is charged by boost voltage so that boost voltage is enabled to be output voltage provided by the charging unit. When the charging unit is cut off and the discharge unit is conducted by control voltage, the discharge unit is enabled to discharge by output voltage. The limitation of the minimum operation voltage can be overcome.

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, the design of high-speed switching application products 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, and the drive voltage The 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 (chargepump IC) can be easily manufactured to increase the driving voltage level, it is widely used in the industry. However, the cost of the boost integrated circuit is relatively high. Furthermore, considering the technical requirements, the minimum operating voltage (operation voltage) and the ...

Claims

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Application Information

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Patent Type & Authority Applications(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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