Mikroelektronika d.o.o.
SKU: MIKROE-4775H-Bridge 8 Click Board
H-Bridge 8 Click Board
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The H-Bridge 8 Click Board™ is a compact add-on board that contains H-bridge current regulator. This board features the MP6519, a monolithic, step-down, current-source driver for applications that require accurate and fast current-response control from Monolithic Power Systems (MPS). It achieves excellent load and line regulation over a wide input supply range up to 28V. The four integrated MOSFET H-bridge control provide a fast dynamic load response and an ultra-high efficiency solution. Complete protection features include load open, load-short protection, over-current protection (OCP), over-temperature protection (OTP), and input over-voltage protection (OVP). This Click Board™ is suitable as a current-regulator brushed DC motor/solenoid driver for various applications.
The H-Bridge 8 Click Board™ is supported by a mikroSDK compliant library, which includes functions that simplify software development. This Click Board™ comes as a fully tested product, ready to be used on a system equipped with the mikroBUS™ socket.
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 |
|---|---|---|---|
| LD1 | PWR | - | Power LED Indicator |
| JP1 | VCC SEL | Left | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
H-Bridge 8 Click electrical specifications
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage VCC | 3.3 | - | 5 | V |
| External Supply Voltage VIN | 2.5 | - | 28 | V |
| Maximum Output Current | - | - | 5 | A |
| Operating Temperature Range | -40 | +25 | +125 | °C |
Software Support
We provide a library for the H-Bridge 8 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
The package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe GitHub account.
Library Description
This library contains API for H-Bridge 8 Click driver.
Key Functions
hbridge8_cfg_setup- Config Object Initialization function.hbridge8_init- Initialization function.hbridge8_default_cfg- Click the Default Configuration function.
Example Description
This library contains an API for the H-Bridge 8 Click driver. This demo application shows the use of the H-Bridge 8 Click Board™.
void application_task ( void )
{
static int8_t duty_cnt = 3;
static int8_t duty_inc = 1;
float duty = duty_cnt / 100.0;
hbridge8_set_duty_cycle ( &hbridge8, duty );
log_printf( &logger, "> Duty: %d%%rn", ( uint16_t )( duty_cnt ) );
Delay_ms( 3000 );
if ( 8 == duty_cnt )
{
duty_inc = -1;
}
else if ( 3 == duty_cnt )
{
duty_inc = 1;
}
duty_cnt += duty_inc;
}
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe GitHub account.
Other Mikroe Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.HBridge8
Additional Notes and Information
Depending on the development board you are using, you may need a USB UART click, USB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.
mikroSDK
The H-Bridge 8 Click Board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.
H-Bridge 8 Click Board
Frequently Asked Questions
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