Gravity MOSFET Driver Module 10A

The Gravity MOSFET module from DFRobot switches DC loads from 5 V to 36 V with a logic signal of 3.3 V to 10 V, also with PWM up to 1 kHz. This allows an Arduino, Raspberry Pi or ESP32 to switch lamps, LED strips, pumps and motors without having to drive the coil of a relay. An optocoupler isolates the control input from the load side. Up to 10 A the module works without a heat sink, up to 20 A DFRobot recommends an additional heat sink.

Important: For direct current (DC) only. With motors, solenoid valves and other inductive loads, connect a freewheeling diode in parallel with the load, otherwise the back voltage can damage the module (DFRobot wiki).

Note: The connection cable can be converted to male pins with a Dupont cable M-M, so that it also fits an Arduino UNO.

Recommended Accessories:

• Dupont Cables M-M 10cm 20 Pieces
• Diode Set 100 Pieces Assorted
• Gravity IO Expansion Shield for Arduino V7.1

Features:

• Switches direct current from 5 V to 36 V, up to 20 A
• Logic signal 3.3 V to 10 V, HIGH switches the load on
• PWM up to 1 kHz, turn-on time 20 µs, turn-off time 50 µs
• Control input isolated by an optocoupler, LED shows the control signal (schematic V1.0)
• Screw terminals: supply to VIN and GND, load to VOUT and GND
• Gravity 3-pin connector
• Mounting holes 3.1 mm

Application Examples:

• Dimming LED strips
• Switching pumps, fans and motors
• Switching solenoid valves and heating elements with extra-low voltage
• Several loads on a Raspberry Pi without relays

Documentation:

• Wiki DFRobot DFR0457
• Schematic (PDF)
• Example switching a lamp with Arduino (DFRobot)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR0457
• Load voltage VIN: 5 V to 36 V DC
• Load current: 0 A to 20 A, above 10 A with an additional heat sink
• Logic level: 3.3 V to 10 V DC
• Switching frequency: 0 to 1 kHz
• Switching times: on 20 µs, off 50 µs
• Operating temperature: -55 °C to 155 °C (DFRobot)
• Interface: Gravity PH2.0-3P
• Load connection: screw terminals VIN, GND, VOUT
• Mounting holes: 3.1 mm inside, 6 mm outside
• Dimensions: 44 × 32 × 15 mm
• Weight: 21 g

Scope of Delivery:

• 1× Gravity MOSFET driver module 10A
• 1× Gravity sensor cable 3-pin digital PH2.0 to XH2.54