H-Bridge 8 Click Board™

Product Code: MIKROE-4775

How Does The H-Bridge 8 Click Board™ Work? The H-Bridge 8 Click Board™ as its foundation uses the MP6519, a monolithic current-source driver for applications that require accurate and fast current-response control from Monolithic Power Systems (MPS). The MP6519 works in step-down mode with four fully integrated MOSFET H-bridges to provide small size and high efficiency and uses pulse-width-modulation (PWM) signal with average current control to achieve a bidirectional current output and fast dynamic current response. It also has current polarity controlled by a GPIO pin alongside the programmable switching frequency from 30kHz to 300kHz. The H-Bridge 8 Click Board™ communicates with MCU using several GPIO pins. The Enable pin, labelled as EN and routed to the RST pin of the mikroBUS™ socket, optimizes power consumption and is used for power ON/OFF purposes (driver operation permission). Also, the Forward/Reverse mode or current direction flowing can be selected according to a logic level of the control signal routed to the CS pin of the mikroBUS™ socket, marked as MOD.

In addition, the H-Bridge 8 Click also has a fault pin labelled as FLT routed to the INT pin of the mikroBUS™ socket, which indicates the fault condition to the external system if any fault occurs during operation. The MP6519 can enter four modes to control the working sequence: Shutdown, Standby, Normal Switching, and Current Polarity Mode. In Shutdown mode, all circuits and blocks are disabled, and the MP6519 consumes less than 1μA. Standby is an initial mode in which control blocks begin working except for the gate drive block for the internal switching MOSFETs. Normal Switching mode activates when both PWM and EN pins are at high logic state (active), while Current Polarity mode is set by MOD pin, and determines the polarity of the current, more precisely, the direction of rotation of the motor. The H-Bridge 8 Click Board™ supports an external power supply for the MP6519, which can be connected to the input terminal labelled as VIN and should be within the range of 2.5V to 28V, while the DC motor coils can be connected to the terminals labelled as DCM1 and DCM2. This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development. Specifications Type Brushed Applications Can be used for applications that require accurate and fast current-response control On-board modules MP6519 - monolithic current-source driver for applications that require accurate and fast current-response control from MPS Key Features Low power consumption, excellent load and line regulation over wide input supply range, fast dynamic load response, ultra-high efficiency, controllable output polarity, various protection features, and more Interface GPIO,PWM Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V,External Pinout diagram This table shows how the pinout on H-Bridge 8 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 PWM PWM Signal Enable EN 2 RST INT 15 FLT Fault Condition Indication Forward/Reverse Direction MOD 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground Onboard settings and indicators Label Name Default Description