AS4950_TB67H450FNG four-way brushed motor H-bridge driver board

AS4950_TB67H450FNG Four-way brushed motor H-bridge driver board
product introduction
AS4950_TB67H450FNG Four-way brushed motor H-bridge driver board was originally intended to be driven by Lichuang's domestic chip AS4950. Later, because this chip was difficult to purchase on Taobao, and some The store had the product but few people were buying it, so I chose Toshiba's TB67H450FNG chip. The two chips are PIN to PIN. There is basically no difference and can be used interchangeably.
The usage scenario
is a smart car with a brush motor. The car
drives a brush motor to achieve closed-loop PID control. The basic structure
of the stepper motor drive is optional. The KF128 terminal block is optional. The XT30 is connected to the power supply. The terminal block and the XT30 connector cannot be powered at the same time! ! ! , when one place is plugged in for power, the other can be used to draw power. After the power is input, it is filtered by the capacitor and directly supplies power to the chip. The other route uses a 78L05 linear regulator to generate a 5V reference voltage to achieve PWM constant current control (see the chip manual for details). The PWM frequency has been tested up to 30Khz. The advantage of the product is its small size, which saves space compared to the L298N direct plug-in chip. ESOP package, the bottom EPAD pad can help the chip heat dissipation and the built-in reference voltage generation circuit (up to 30V) eliminates the need for an external reference voltage. A TVS tube is added to the power input (the 12V one connected here can be replaced as needed) to protect the downstream circuit. Show pictures