Temperature-protection built-in integrated direct-current motor driving circuit for toy

Abstract

The invention discloses a temperature-protection built-in integrated direct-current motor driving circuit for a toy, relates to a circuit structure, and in particular to a driving circuit structure for the toy. The temperature-protection built-in integrated direct-current motor driving circuit comprises a controller and an integrated direct-current motor driving circuit, wherein two signals of input ends of the integrated direct-more driving circuit are connected with an output end of the controller; output ends of the integrated direct-current motor driving circuit are respectively connected with two ends of a direct-current motor; a power switch is embedded in the integrated direct-current motor driving circuit; a single circuit can directly drive a direct-current motor to realize forward rotation, reverse rotation, brake and rotation stop of the direct-current motor; and a temperature protection circuit is arranged on the integrated direct-current motor driving circuit. The temperature-protection built-in integrated direct-current motor driving circuit solves the safety problem about motor stalling of the toy due to the fact that an existing driving circuit technology does not have protection function. The temperature-protection built-in integrated direct-current motor driving circuit is packaged by small size package like DIP8 (dual in-line package 8) or SOP8 (small outline package 8), so that the problem that total cost is high since separation elements are utilized in an existing driving circuit technology, welding points are large in number, and welding cost is close to a component is solved.

Description

technical field [0001] The invention relates to a circuit structure, in particular to a driving circuit structure for a toy. Background technique [0002] Electric toy cars usually use a small DC motor as a power source. To realize the forward and backward functions of the electric toy car, two small DC motors are usually used. One motor is used to drive the rear wheel of the electric toy car. By controlling the forward rotation and reverse rotation of the motor, the electric toy car can move forward and backward; the other motor is used to drive the front wheel of the electric toy car. Turn can make the electric toy car turn left and turn right. The toy car itself has a certain weight. If the current driving capacity of the drive circuit is insufficient, the electric toy car will not be able to drive normally, and will appear to drive slowly or even stop. Therefore, the design of the DC motor drive integrated circuit is very critical. figure 1 , figure 2 They are two k...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a toy DC motor drive integrated circuit with built-in temperature protection. The present invention solves the non-protective function existing in the existing drive circuit technology. Under a large amount of power consumption, the temperature of the circuit rises immediately. In severe cases, the plastic package will smoke or even catch fire, causing safety problems; Device cost, the problem of high overall cost

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