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eFuse 파워 스위치 TPS25940 모듈
(EFUSE 4 CLICK)
개요
- 본 제품은 eFuse 파워 스위치 TPS25940 모듈 입니다.
- TPS25940 칩을 기반으로 디자인된 제품으로 회로에 공급되는 이상 전류와 전압으로부터 회로를 보호하는 퓨즈 역활을 하는 제품입니다.
특징
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HOW DOES IT WORK?
eFuse 4 Click is based on the TPS25940, a smart eFuse with integrated back-to-back FETs and enhanced built-in protection circuitry from Texas Instruments. The TPS25940 provides robust protection for all systems and applications powered by an external power supply from 2.7V to 18V. It also features a full suite of protection and monitoring functions, including a low-power DevSleep™ mode, controllable through a DVS pin routed on the PWM pin of the mikroBUS™ socket, that supports compliance with the SATA™ Device Sleep standard.
This Click board™ is designed to protect systems such as enterprise SSD drives against sudden power loss events. It monitors voltages of the input and output terminals to provide true reverse blocking from the output when a reverse condition or input power fail condition is detected. The TPS25940 allows users to program the overcurrent limit threshold between 1A and 5A via an external I2C-configurable digital potentiometer, the AD5272 from Analog Devices. Besides the overcurrent feature, the TPS25940 is also equipped with programmable over and undervoltage thresholds for load, source and device protection.
The TPS25940 also provides an additional power good comparator on the PGD pin, routed on the AN pin of the mikroBUS™ socket, with precision internal reference for output or any other rail voltage monitoring and a fault event indicator on the FLT pin. This fault indicator goes to a low logic state to indicate fault condition due to under/overvoltage, reverse voltage and thermal shutdown event in the event of an overcurrent. A special addition on the plate represents an unpopulated header which represents a precise current monitor output for health monitoring of the system, alongside Enable pin routed on the RST pin of the mikroBUS™ socket that controls the ON/OFF state of the internal TPS25940's FETs.
This Click board™ can be operated only 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
Type Power Switch Applications Can be used for systems with load-side holdup energy that must not drain back to a failed supply bus On-board modules TPS25940 - eFuse power switch from Texas Instruments Key Features Reverse current blocking, DevSleep support for SSDs, wide operating voltage, programmable current limit, current monitoring, protection features, power-good and fault indicators, and more Interface GPIO,I2C Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V
