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
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[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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