eFuse 5 Click

How does it work?

eFuse 5 Click is based on the TPS16530, an industrial eFuse from Texas Instruments. The TPS25940 provides robust protection for all systems and applications powered by an external power supply from 4.5V to 58V. Load, source, and device protections are provided with many programmable features, including undervoltage lockout selectable via UVLO SEL jumper and the fast response short circuit protection that immediately isolates the faulty load from the input supply when a short circuit is detected. The TPS16530 also allows users to program the overcurrent limit threshold between 0.6A and 4.5A via an external I2C-configurable digital potentiometer, the AD5171 from Analog Devices.

The TPS16530 can be put in low-power Shutdown mode using the EN pin of the mikroBUS™ socket, offering a switch operation to turn ON/OFF the eFuse. It also allows flexibility to configure the device between the two current-limiting fault responses (latch off and auto-retry). Selection is made by positioning SMD jumpers marked MODE SEL to the appropriate position marked GND or NC (GND is for automatic restart mode response during current limit and thermal fault, while NC is for latch off).

For system status monitoring and downstream load control, the TPS16530 provides one fault signal, which can be visually detected via the red FLT LED or the FLT pin on the mikroBUS™ socket, and a precise current monitor output available on the MON pin of the mikroBUS™ socket. Besides, the TPS16530 also features an open drain Power good (PGDD) indicator output, which can control downstream loads like DC/DC converters.

This Click board™ can only be operated with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used as a reference for further development.

Specifications

Pinout diagram

This table shows how the pinout on eFuse 5 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
Current Monitor	MON	1	AN	PWM	16	PGD	Power-Good Indicator
Shutdown	EN	2	RST	INT	15	FLT	Fault Indicator
	NC	3	CS	RX	14	NC
	NC	4	SCK	TX	13	NC
	NC	5	MISO	SCL	12	SCL	I2C Clock
	NC	6	MOSI	SDA	11	SDA	I2C Data
Power Supply	3.3V	7	3.3V	5V	10	NC
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

eFuse 5 Click electrical specifications

Software Support

We provide a library for the eFuse 5 Click as well as a demo application (example), developed using Mikroe compilers. The demo can run on all the main Mikroe development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager (recommended), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for eFuse 5 Click driver.

Key functions

• efuse5_set_current_limit eFuse 5 set the current limit function.

• efuse5_set_resistance eFuse 5 set the resistance function.

• efuse5_get_fault eFuse 5 gets fault condition state function.

Example Description

This library contains API for the eFuse 5 Click driver. This driver provides the functions to set the current limiting conditions to provide the threshold of the fault conditions.

void application_task ( void )  
 { 
     if ( EFUSE5_OK == efuse5_set_current_limit( &efuse5, EFUSE5_CURRENT_LIMIT_600_mA ) ) 
     { 
         log_printf( &logger, "  Current limit:  600 mA   rn" ); 
         log_printf( &logger, "---------------------------rn" ); 
     } 
     Delay_ms( 10000 ); 

     if ( EFUSE5_OK == efuse5_set_current_limit( &efuse5, EFUSE5_CURRENT_LIMIT_1200_mA ) ) 
     { 
         log_printf( &logger, "  Current limit: 1200 mA   rn" ); 
         log_printf( &logger, "---------------------------rn" ); 
     } 
     Delay_ms( 10000 ); 
 }

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager (recommended), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.eFuse5

Additional notes and informations

Depending on the development board you are using, you may need 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. UART terminal is available in all Mikroe compilers.

mikroSDK

This Click board™ is supported with mikroSDK – Mikroe Software Development Kit, which needs to be downloaded from the LibStock and installed for the compiler you are using to ensure proper operation of mikroSDK compliant Click board™ demo applications.

For more information about mikroSDK, visit the official page.