H-Bridge 3 Click is designed for the control of small DC motors and inductive loads, it features TLE9201SG a general purpose 6A H-Bridge perfectly suited for industrial and automotive applications. This IC meets the harsh automotive environmental conditions and it is qualified in accordance with the AEC-Q100 standard, also has set of features such as the short circuit and over-temperature protection, under-voltage protection, detailed SPI diagnosis or simple error flag and fully 3.3/5.5V compatible logic inputs.
H-bridge 3 Click is supported by a mikroSDK compliant library, which includes functions that simplify software development.
H-Bridge 3 Click can be used to drive a H-Bridge motor by changing output states. The outputs can be pulse width modulated at frequencies up to 20kHz by means of PWM/DIR control. While the signal at the direction input defines the direction of the DC motor, the PWM signal controls the duty cycle. PWM/DIR control reduces the number of PWM capable pins needed at the microcontroller.
For load currents above the current limitation threshold (7A typ.) the H-Bridge switches into chopper current limitation mode. The H-bridge 3 Click is protected against short circuits and over temperature and provides diagnosis via SPI or basic error feedback via status flag. Open load can be detected when the bridge is disabled or during PWM operation of inductive loads.
The main component used on the H-Bridge 3 Click is the TLE9201SG, an H-Bridge DC motor driver, with up to 28V and 6A, from Infineon. This IC is an efficient integrated H-bridge driver, with very low RDS ON output per switch. H-bridge in general, allows the current to flow in one or another direction.
All internal supply voltages are derived from the external VIN conector. A charge pump provides the gate voltage for the high side switches. The output buffer of the digital output SO is supplied by the pin VSO. Therefore the output logic level at SO can be easily configured for 3.3 V or 5 V logic by moving VCC SEL jumper to the respective voltage.
The output stages consist of four n-channel mosfets in H-bridge configuration. The outputs are protected against short circuits and over temperature. The bridge is controlled using the inputs PWM and DIR. The signal at DIR is defining the direction of the driven DC motor whereas the PWM signal sets the duty cycle. The outputs can be set tristate (i.e. high side and low side switches are turned off) by setting DIS to high level.
For diagnosis purposes the TLE9201SG is equipped with a “Serial Peripheral Interface“ (SPI). The H-bridge 3 Click is configured as a “slave” device. This means that the host microcontroller as the master is providing the chip select (CS) and clock signal (SCK).
A data transfer on the SPI bus is initiated with a falling edge on CS and is terminated by a rising edge on CS. The data on the serial input pin SI is sampled with the falling edge of SCK, the serial data output at MISO is determined by the rising clock edge. The data is transferred “MSB first”. The word length of the SPI is 8 bit. Please note that there is no check for the number of clocks within a SPI frame. Any low pulse at CS line will be regarded as one frame.
The H-Bridge 3 Click comes with a mikroC, mikroBASIC, and mikroPASCAL compilers compatible library, which contains functions for easy and simple operating of this Click board™. The provided example application demonstrates their usage and can be used as a reference for custom projects.
No reviews yet.