Motor driver and control circuit board

Abstract

The invention discloses a control circuit board of a motor driver, which comprises a microcontroller, a bootstrap circuit and a power supply voltage regulation device. The control circuit board of the motor driver is characterized in that the circuit board is also provided with an open energizing circuit and a close energizing circuit, wherein the microcontroller, the bootstrap circuit and the power supply voltage regulation device are installed on one circuit board, a solder pad which is used to install a power device is arranged on the circuit board, the solder pad is electrically connected with the open energizing circuit and the close energizing circuit, and a device which is sealed by a welding patch is arranged on the circuit board. A driver which is provided with the control circuit board of the motor driver is characterized by further comprising an outer shell, wherein the power device is welded on the solder pad which is used to install the power device, and the power device is installed in the outer shell and dissipates heat by the aid of the outer shell. The control circuit board of the motor driver is convenient for testing, debugging and the like, and the driver is characterized in that the structure is compact.

Description

technical field [0001] The present invention relates to a motor driver for an electric vehicle, and also relates to a control circuit board configured in the motor driver. Background technique [0002] Most of the existing motor drivers use discrete in-line devices welded on the circuit board. The control circuit part and the power drive part are not on the same circuit board. In the field effect tube bridge power drive circuit, each bridge arm Only the open excitation circuit or the close excitation circuit is installed, the PWM signal makes the power tube in the incomplete conduction or closed area for a long time, and the heat is relatively large. [0003] Since the mounting density of components on the above-mentioned circuit board using discrete devices is not very high, the area and volume of the circuit board are large, and the installation of components is done manually, which is inefficient and expensive, and the product is not compact enough. Contents of the inve...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing motor drivers use discrete in-line devices welded on the circuit board. The control circuit part and the power drive part are not on the same circuit board. In the field effect tube bridge power drive circuit, each bridge arm Only the open excitation circuit or close excitation circuit is installed, the PWM signal makes the power tube in the incomplete conduction or closed area for a long time, and the heat is relatively large

[0003] Since the above-mentioned circuit boards using discrete devices do not have a very high component mounting density, the area and volume of the circuit board are large, and the components are installed manually, which is inefficient and expensive, and the product is not compact enough.

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