alexcmag
Nov 07, 2005, 08:27 PM
Most people who bought GWS Flight packs have ICS50 or ICS100 ESCs.
Now GWS is making ICS50Li, rated for 2S or 3S LiPo packs, a good ESC and very cheap, but 2A is enough only for small models.
These ESCs are perfect for modifications. They are easy to find, power parts are all on same side of PCB, it is very easy to modify they to 24A or more.
Let's start with an original ICS50.
We will need:
- 1 ICS50 or ICS50Li ESC
- 1 POWER MOSFET
- 1 Schottky diode rated to 3A
The electronic parts are available on www.farnell.com, a major reseller of electronic parts that has branchs on most countries.
The recomended MOSFET is Philips PSMN005-30K.
It has 0.044ohm internal resistance and is rated for 22A continuous or 60A pulses. Farnell code is 7564490 and if you are on UK the link to buy is
http://uk.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=7564490&N=401
With such low internal resistance it will work very cool even on high power, so other parts of ESC (BEC, for example) will be very happy too.
If you are outside UK, enter www.farnell.com, choose your country, and type 7564490 on search box.
Schottky diode is used to protect the MOSFET from ECM current from motor.
If you send a pulse to an inductor (motor, relay, transformer, ...), then the pulse is over the inductor sends back a short pike. If you run on high power, these pikes will make MOSFET to get hot and burn out.
The Schottky diode will act as a "short circuit" to these pikes, so the MOSFET will not receive it. The original schottky diode is intended to protect the MOSFET from pikes coming from IPS-DXA or other small motors. To a larger motor, we need a better diode too.
I choose the MBRS340T3, available on Farnell (Farnell code 878390, http://uk.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=878390&N=401 ) because it can handle 3A continuous, 80A peaks, has same size of original FET and is cheap.
Let's start with the ICS50.
One side is covered by a golden label. Let this side as is, it is not important to us.
Other side of PCB has a MOSFET, a Schottky diode and the 5V regulator (BEC).
Positive (red) wire is bypassed, so it can handle a lot of power without burning the PCB.
Negative (black) wire is soldered to regulator and is connected to MOSFET by a large copper track on PCB.
Now GWS is making ICS50Li, rated for 2S or 3S LiPo packs, a good ESC and very cheap, but 2A is enough only for small models.
These ESCs are perfect for modifications. They are easy to find, power parts are all on same side of PCB, it is very easy to modify they to 24A or more.
Let's start with an original ICS50.
We will need:
- 1 ICS50 or ICS50Li ESC
- 1 POWER MOSFET
- 1 Schottky diode rated to 3A
The electronic parts are available on www.farnell.com, a major reseller of electronic parts that has branchs on most countries.
The recomended MOSFET is Philips PSMN005-30K.
It has 0.044ohm internal resistance and is rated for 22A continuous or 60A pulses. Farnell code is 7564490 and if you are on UK the link to buy is
http://uk.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=7564490&N=401
With such low internal resistance it will work very cool even on high power, so other parts of ESC (BEC, for example) will be very happy too.
If you are outside UK, enter www.farnell.com, choose your country, and type 7564490 on search box.
Schottky diode is used to protect the MOSFET from ECM current from motor.
If you send a pulse to an inductor (motor, relay, transformer, ...), then the pulse is over the inductor sends back a short pike. If you run on high power, these pikes will make MOSFET to get hot and burn out.
The Schottky diode will act as a "short circuit" to these pikes, so the MOSFET will not receive it. The original schottky diode is intended to protect the MOSFET from pikes coming from IPS-DXA or other small motors. To a larger motor, we need a better diode too.
I choose the MBRS340T3, available on Farnell (Farnell code 878390, http://uk.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=878390&N=401 ) because it can handle 3A continuous, 80A peaks, has same size of original FET and is cheap.
Let's start with the ICS50.
One side is covered by a golden label. Let this side as is, it is not important to us.
Other side of PCB has a MOSFET, a Schottky diode and the 5V regulator (BEC).
Positive (red) wire is bypassed, so it can handle a lot of power without burning the PCB.
Negative (black) wire is soldered to regulator and is connected to MOSFET by a large copper track on PCB.