Compensation device and drive device

A compensation device and driving device technology, applied in the field of signal processing, can solve the problems of increasing load loss and reducing driving efficiency, etc.

Inactive Publication Date: 2014-12-17
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a compensating device and a driving device for the abov

Method used

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  • Compensation device and drive device
  • Compensation device and drive device
  • Compensation device and drive device

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] see figure 1 , figure 1 It is a structural schematic diagram of the first embodiment of the compensation device of the present invention.

[0015] The compensation device described in this embodiment includes a voltage stabilizing unit 200 and a zero point adjustment unit 100 for canceling the first-order system pole of a metal oxide half field effect transistor. The zero point adjustment unit 100 includes a series phase shifting circuit 110 and a voltage dividing resistor 120, the phase shifting circuit 110 includes a parallel phase shifting capacitor 111 and a phase shifting resistor 112...

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Abstract

The invention discloses a compensation device and a drive device. The compensation device comprises a voltage stabilizing unit and a zero point regulating unit; the zero point regulating unit is used for counteracting first-order system poles of a metal oxide semiconductor field-effect transistor. The zero point regulating unit comprises a phase shift circuit and a divider resistor connected with each other in series. The phase shift circuit comprises a phase shift capacitor and a phase shift resistor connected in parallel. The voltage stabilizing unit comprises an operational amplifying unit and a feedback resistor. The feedback resistor is connected between the output end of the operational amplifying unit and an inverted phase input end thereof. The same-phase input end of the operational amplifying unit is grounded. The divider resistor is connected between the phase shift circuit and the inverted phase input end of the operational amplifying unit. The compensation device and the drive device have the advantages that first-order system poles of the MOSFET (metal oxide semiconductor field-effect transistor) circuit can be counteracted, poles of the compensation device turn into compensated first-order system poles of the MOSFET circuit, a constant o the MOSFET circuit is regulated, rising time of output current of the MOSFET is shortened, and rising speed of the output current is increased.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a compensating device and a driving device. Background technique [0002] The drive circuit of the optical-mechanical light source device usually uses a power MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) for energy conversion. In the switching of the MOSFET, it is controlled by PWM (Pulse Width Modulation) IC (integrated circuit, integrated circuit) output drive voltage to control the current size of the MOSFET output. [0003] The driving voltage waveform output by the control IC is usually a step square wave, and the current waveform output by the MOSFET is an approximate step waveform. This step current waveform is affected by parameters such as the MOSFET's own input capacitance and wiring inductance. This current waveform has a very slow rise time, which greatly prolongs the response time of the MOSFET, reduces the driving efficiency, and increases t...

Claims

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Application Information

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IPC IPC(8): H03K19/0944
Inventor 帅孟奇
Owner GUANGDONG VTRON TECH CO LTD
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