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PWM-based TEC driving circuit and method for improving driving ability of driving circuit

A driving circuit and driver technology, applied in non-electric variable control, instrument, temperature control and other directions, can solve the problems of low market competitiveness of products, inability to adapt to applications, long supply cycle, etc., to improve driving ability and market competitiveness. Good, short lead time

Active Publication Date: 2016-03-02
LOOTOM TELCOVIDEO NETWORK WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is inefficient and generates a lot of heat, which makes it unable to adapt to increasingly stringent energy consumption standards and small-volume applications
Another kind of dedicated TEC driver chip for PWM drive mode, such as MAX1968, MAX1978, etc., such as the LD automatic temperature control device based on MAX1968 mentioned in the Chinese utility model patent with the notification number CN102455717A and the Chinese utility model patent with the notification number CN204215291 A TEC-based laser temperature control circuit is mentioned in the article. This type of chip has high integration, high efficiency, and small size. low competitiveness

Method used

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  • PWM-based TEC driving circuit and method for improving driving ability of driving circuit

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Embodiment Construction

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0017] See figure 1 , figure 2 , a kind of TEC drive circuit based on PWM of the present invention, comprises laser, and laser comprises NTC resistance and TEC, also comprises:

[0018] Error amplifier circuit 1, the error amplifier circuit 1 is electronically connected to the NTC resistor, and is used to convert the change of the resistance value of the NTC resistor due to the temperature change into a change of the voltage signal and amplify it;

[0019] The PWM drive cir...

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Abstract

The invention provides a PWM-based TEC driving circuit and a method for improving the driving ability of the driving circuit. The PWM-based TEC driving circuit comprises a laser, wherein the laser includes an NTC resistor and a TEC. The PWM-based TEC driving circuit is characterized in that the PWM-based TEC driving circuit further comprises an error amplification circuit which is in electric control connection with the NTC resistor and is used for converting the change of the resistance value of the NTC resistor caused by temperature change into the change of voltage signals and amplifying the change of voltage signals, a PWM driving circuit which is in electric control connection with the error amplification circuit and the TEC and receives the voltage signals of the error amplification circuit to control the TEC and make the same perform temperature adjustment. The invention also provides a method for improving the driving ability of the PWM-based TEC driving circuit.

Description

technical field [0001] The invention belongs to the technical field of temperature control, in particular to a PWM-based TEC drive circuit and a method for improving its drive capability. Background technique [0002] In the prior art, the drive circuit of the semiconductor cooler (TEC) of the laser is mainly divided into two modes: one is the linear drive mode. This method is inefficient and generates a lot of heat, which makes it unable to adapt to increasingly stringent energy consumption standards and small-volume applications. Another kind of dedicated TEC driver chip for PWM drive mode, such as MAX1968, MAX1978, etc., such as the LD automatic temperature control device based on MAX1968 mentioned in the Chinese utility model patent with the notification number CN102455717A and the Chinese utility model patent with the notification number CN204215291 A TEC-based laser temperature control circuit is mentioned in the article. This type of chip has high integration, high e...

Claims

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Application Information

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IPC IPC(8): G05D23/20
Inventor 马金满吴志锋尹冠民柯贤智胡恩杰陈浩东翟先文汪小林
Owner LOOTOM TELCOVIDEO NETWORK WUXI
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