Product description
EKM013 and EKM014 are two small modules with two (EKM013) and four (EKM014) powerful FETs for driving heavy loads. The FETs are controlled by a very fast driver IC from Ti that can toggle the transistors fully on and off at extremely high frequencies.
The board has separate voltage supplies for the driver ICs and the transistors. The driver can be powered with voltages ranging from 4.5 to 12V and the transistors up to ~50V. The control inputs can handle 3.3V and 5V logic levels. Please note that VH must be equal to or higher than VL!
The transistors are wired as low side switches and will break the negative terminal of a connected load. This arrangement will work with pretty much all DC loads, like motors, solenoids, LED lamps and any other resistive, inductive or capacitive load. Please note that this board is not a full H-bridge driver and cannot drive motors in both directions. Each channel is protected from back EMF with powerful Schottky diodes that will handle transients upp to 100V and 175A.
The driver IC, UCC27524, will provide enough current to charge the transistor gates extremely fast. With a peak drive current of 5A, this driver can switch each transistor at rates exceeding, 1MHz. Rise and fall times as specified in the datasheet are 6ns and 10ns (typ.) with around 1ns matching between channels. The control inputs are hysteretic and pulled to ground with 120 kohm to ensure glitch-free operation under any condition.
The board has space to mount a large through-hole capacitor. The capacitor is usually not required if the load is small and the power supply is connected with short wires.
The board comes with all components assembled and connectors included (unsoldered).
Included hardware:
5x 3.5mm 2-pin screw terminals
1x 2.54mm 10-pin header
Functions
Control DC loads with great speed
Highly efficient, almost no heat
Miniature sized design
LED indicators for logic supply and outputs
Specifications
Supply voltage (FET): 5 - 50 VDC
Supply voltage (logic): 4.5 - 12 VDC
Logic levels: 3 - 12 V
FET RDSon: <5 mOhm
FET limits: 100 V / 100 A
Dimensions: 46 x 30 mm
Mounting holes: c-c 41 x 25 mm / ø2.5 mm
