Optocsatolt leválasztás (PS2801-4 izolációs IC-vel 2500V-ig RMS), és 4 csatornás erős FET-es illesztés.
A maximum kapcsoló áram a meghajtástól és hűtéstől függően az IRF540 FET-ek adatlapja alapján.
Használható kapcsolásra is logikai trigger jel bemenettel, és PWM-mel is hajtható, így teljesítmény meghatásra is kiváló, pl motorokhoz, ledekhez, Peltierekhez, stb..
Magas trigger jelszintre "bekapcsolja" a fogyasztót, azaz nem invertált a kapcsolásra használva, közös pozitív bekötéssel, a kapcsolás földre húzással történik, azaz csak kimenetként használva a negatívot viszont invertált.
MOSFET is an electronic devices with good switching characteristics. It is widely used in circuits, such as power supplies switching ,motor drives, lighting dimmer and so on. Relay is another kind of module with switching characteristics. Since relay works relying on mechanical contacts to open or shut. In this way it s will inevitably lead to relay's stopping working while switching time is too short.
We designed a 4-channel MOSFET switch. It can supply up to four groups of electronic switches to control different circuit blocks respectively. Limited by the working priciples, MOSFET can only be used to control the DC circuit, such as DC-LED screen and so on, but not suitable for AC circuit control.
In some extreme cases,It can be used to control 100V/33A DC circuit. However, it is suggested that the controlled DC voltage is more than 9V.
IRF 540 module - 4 Channel Opto Isolated DC Switch
MOSFET's has good switching characteristics and is widely used to control almost any DC load. This is a 4 channel MOSFET switch and it use the very popular IRF540 MOSFET. It is perfect for switching DC loads up to 10A. The module is optoisolated, please note that the GROUND connections are in common so there is not complete isolation. Not a real biggy for DC Loads, but something to be aware of. The module is basically a "Solid-State Relay" for DC. Up to 4 individually controllable loads may be connected to the (+) and (-) switched outputs, all fed from a common power rail. Being a low side switch, when the switch is on, it connects the load (-) terminal to ground.
Quick Spec
- Max Control Voltage (signal) : 6V
- LED indicator for each channel
- Chipset : IRF540
- Opto Isolator used : PS2801-4
- Max Switch Current: 10A (absolute max 33A with heatsink)
- Max Switch Voltage: 100V
Basic Operation

Board Layout

Resources