IRFP N – CHANNEL V – Ω – 14A – TO PowerMESH™ MOSFET s . TYPICAL RDS(on) = Ω s. EXTREMELY HIGH dv/dt CAPABILITY. IRFP 14A, V, Ohm, N-channel Power MOSFET. This N-Channel enhancement mode silicon gate power field effect transistor is an advanced. IRFP V. DSS. = V. I. D(cont). = 14 A. R. DS(on). = Ω. G = Gate,. D = Drain,. S = Source,. TAB = Drain. Features l International standard packages.

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IRFP Datasheet(PDF) – STMicroelectronics

I am assuming these are too light for the duty. Welcome to our site! Take a look at this one. As Tony points out, there will usually be some other parameter that changes along the way.

IRFP Mosfet Question | Electronics Forum (Circuits, Projects and Microcontrollers)

Often the input FETs are just the weak link and something else is the real ifrp450. So, it will only carry 14 amps if you can keep the case at 25C while it is pushing out 78 watts of heat.

My circuit is 15 volts. If so, datassheet you suggest some part numbers? Potentiometer Questions Started by norbss Yesterday at Ken1 Member Mar 1, Let’s look at a few items from the datasheet.

The unit belongs to a neighbour and he said it just quit working; he doesn’t dxtasheet if it was running hot before it quit. It seems this “entry level” charger” has very little margin before exceeding the component limits.


Pins 11 and 14 are the 2 outputs of the chip. Tc is case temperature, not ambient. This is the datasheet I used for this discussion.

IRFP450, SiHFP450 product information

Otherwise you’ll need to resort to cold water or refrigerated cooling. Thread starter Ken1 Start date Feb 28, Misterbenn Active Member Mar 1, So, if you’re looking for a mosfet to continuously carry 20 amps, you will probably need a mosfet s with current capacity 3 to 10 times 20 amps. You must log in or register to reply here. It comes down to the fact that the current rating of most mosfets catasheet a calculated number as to what current will put the junction temperature at it’s failure point when the case is at 25C.

For a better experience, please enable JavaScript in your browser before proceeding. So it will only handle 14 amps continuous if the case is kept at 25C all of the time. By continuing to use this site, you are consenting to our use of cookies. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.

Lets take that number down to the graph at Figure 4. Not as easy as it sounds. My rule of thumb is the impedance of each stage, where the ratio of impedances of successive stages should not exceed and ought to be in the 10 range, so that RC dynamic losses don’t dominate and exceed conduction losses.


Articles Top Articles Dafasheet resources. This is determined by the V-I slope of the driver and RdsOn of the switch.

The unit is relatively new and hasn’t seen much use. The sum of the junction to case and the case to sink resistances is 0. The battery charge may not have intelligent soft start and overstress the charger hooking up to a dead battery.

So when carrying 14 amps, it will be dissipating about 78 watts of heat. A bigger switch always puts a bigger Ciss load on the gate. What are you doing with it? I am using four amp mosfets.

Electrolytic caps are a prime suspect. To participate you need to register. Pin 11 which the burned resistor connects to has a very low resistance to ground compared to pin But if increased current capacity is your only goal, there is a big trap you need to look out for.

Datasheets, Manuals or Parts. Forums New posts Search forums. Ken1 Member Feb 28, So, at 78 watts, the junction is 69 degrees hotter than the case.

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