Interfacing between control signals and power switches, like MOSFETs and IGBTs; charging the gate capacitor of a transistor to the voltage required to make it switch while supplying enough current to make it switch at the required speed.
From this video, Pace MBT 250 rework station with a Gordak handpiece and Arduino by Fodor Tibor, @ 17:27, this "close up" photo is shown of the board:
Note the seven blue metal film resistors that go between the digital output pins to the gates of…
I've been experimenting on a lot of half-bridge-based PC PSU schematics. There's one thing I cannot understand:
As can be seen from above, there's an extra winding in series with the high side driving winding (marked with red ?) and one end of it…
Why are the dead-time in IRF gate-driver ICs like IR2109 relatively long?1 I can be interpreting the data-sheet wrong too.
The IR2109 has a dead-time of 540ns. For IGBTs that dead-time are not relatively long. But if you take into consideration the…
Concerning the HIP4082 IC from intersil. I was asking about the input to the IC. Pins (ALI,BLI), can I use a very low frequency input on these pins for example to control a stepper motor, so the frequency won't be stable sometimes up to 1 KHZ and…
I don't know how to how to properly wire the two outputs of the driver IC TC4431 to the MOSFET gate.
In the datasheet, there's a test circuit diagram (@page7, FIG4-1), should I connect the outputs together to the gate pin?
Since resistors might be…
I built the circuit and get a max-measured gate triggering voltage of 0.24 vac against the needed 1.5 V according to the triac's data sheet, and could not make the circuit work. How is it supposed to work anyway with the Neg side of the 47Mf C…
I want to use the DRV8300 to drive three half-bridges. However the schematics inside the datasheet does not seems to work. When I try to scope VDS, it seems VDS seems to be too small on the upper FET.
The below diagram is from the first page of the Infineon IR2104 Half-Bridge Driver datasheet.
I have a Vbus that is also the power source for this IC (or I want it to be).
One presumes that the LO is driven by the Vcc from here and thus at high…
Most FET Vgs are about 7 to 15V, if we use supply voltage in this range we can feed supply voltage to gate driver ICs or circuit.
But, what if our circuit work on higher supply voltage range,says 9 to 25V.
What is optimal way to regulate voltage for…
I am trying to use a gate driver HCPL-3210 for an IGBT
but one of the big disadvantages that I can notice is that each chip needs its own power supply of 15 V. So as a total I would need 4 power supplies for 4 gate drivers (to implement a single…
I have 2 different versions of a high and low side driver; IRS2186 AND IRS2186. I have attached the typical connections, taken from the data sheet (data sheet:…
I have tried googling, but almost everything I can find on gate drivers discusses only the maximum current parameters.
I'm looking at a gate driver for a university project. The gate driver uses 3.3V logic, and on the datasheet lists the maximum…
I've selected this MOSFET for a motor control application [picture attached]: IRF200P222
Datasheet: https://www.infineon.com/dgdl/Infineon-IRF200P222-DS-v01_02-EN.pdf?fileId=5546d4625b3ca4ec015b3e42ba4a0744
I'm going to use low side configuration.…
We have designed a board to control asynchronous single phase motor, using two half-bridge gate –drive IC (Fairchild FAN73833MX) and four IGBT (Fairchild FGH30T65UPDT) as shown in the scheme below.
Using a MCU we have implemented a 18kHz PWM control…
I want to use HCPL3120 gate driver:
Its data sheet is here: https://www.mouser.com/datasheet/2/678/V02-0161EN_DS_HCPL-3120_2016-03-21-908803.pdf
On page number 22 there is an excellent design for IGBT, but I didn't understand how to find the value…
