Two Channel Smart Low-Side Power Switch for Inductive, Resistive and Capacitive Loads – Arduino Shield

Product presented here enables users to switch all kinds of resistive, inductive and capacitive loads, limited by clamping energy (EAS) and maximum current requirement. The user may interface 2 x inductive, resistive, and capacitive loads such as solenoid, dc motor, high current contact switch, high current relay, LEDs, lamps, and piezo etc. The project is most suitable for inductive loads as well as loads with inrush current. The project has been designed using BTF3050TE IC which is a 50 mΩ single-channel Smart Low-Side Power Switch in a PG-TO252-5 package providing embedded protective functions. The power transistor is built by a N-channel vertical power MOSFET. The device is monolithically integrated. The BTF3050TE is automotive qualified and is optimized for 12V automotive and industrial applications. Two loads can be controlled using Arduino UNO. IC has a thermal-restart function. The device will turn on again, if input is still high, after the measured temperature has dropped below the thermal hysteresis.

Features

• Operates 2 x Loads (Nominal Load Current Each Channel 3A – 6A both)
• Maximum on State Resistance 100mOhms Each Channel
• Operating Voltage Range 12V-24V for Load ( 3V to 28V Operating Range)
• Operating Supply Voltage Range VCC 3 to 5.5V (Connected to 5V of Arduino Uno)
• Input Signal Maximum 5.5V
• The project can drive Inductive, Resistive, Capacitive Loads
• Arduino Digital pin D3 drives Load-1, and D5 drives Load-2
• BTF3050TE Input PWM < 20Khz or TTL Input (Arduino D3 and D5)
• SW1 and SW2 Resets switch when a Fault condition occurs
• Over-temperature shutdown with auto-restart
• Active clamp over voltage protection of the output
• Enhanced short circuit protection
• Active clamp over voltage protection of the output
• 2 additional LEDs On Arduino D11 and D12 provided for operation indication.
• PCB dimensions: 61.91 x 50.64 mm