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From: piglet <erichpwagner@hotmail.com>
Newsgroups: sci.electronics.design
Subject: Re: P-channel MOSFET model
Date: Wed, 8 May 2024 13:03:00 +0100
Organization: A Patent noisesome spinner
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On 06/05/2024 06:58, Edward Rawde wrote:
> "John Larkin" <jjSNIPlarkin@highNONOlandtechnology.com> wrote in message
> news:aesf3j1po3glh1c23se3lofoni6j7ol75m@4ax.com...
>> On Sun, 5 May 2024 14:42:30 -0400, "Edward Rawde"
>> <invalid@invalid.invalid> wrote:
>>
>>> "Edward Rawde" <invalid@invalid.invalid> wrote in message
>>> news:v16s2i$2uv4$1@nnrp.usenet.blueworldhosting.com...
>>>> Does anyone know of a P-channel MOSFET, roughly equivalent to
>>>> XP233P1501TR-G which has a model I can use in LTSpice?
>>>> XP202A0003PR-G would be useful too.
>>>
>>> Infineon BSS215P  might be more suitable for the FET.
>>> That does have a simulation model.
>>> http://www.infineon.com/dgdl/Infineon-SimulationModel_OptiMOS_PowerMOSFET_PSpice_20V_P-Channel-SM-v01_00-EN.zip?fileId=db3a30433d346a2d013d493ff9d160ab
>>> I'll have to look into how compatible the model is with LTspice.
>>>
>>> Microchip TC105 is also interesting but a bit pricey.
>>> However it does lead to CD54NP as a possible choice for the inductor.
>>> MA737 doesn't seem to be easily available but a suitable shottky diode
>>> shouldn't be hard to find.
>>>
>>> Vishay SI2371EDS-T1-GE3 looks interesting too.
>>> Not too pricey for lower on resistance.
>>>
>>>>
>>>>
>>>
>>
>> Some of the TI TPS5- series buck switchers are 19 cents.
>>
>> Your circuit looks like a good way to blow up transistors.
>>
> 
> Here's 12V to 5V 1A using the concept I had in mind of using a comparator
> capacitively coupled to a FET.
> Also using only components I could find in a fresh install of LTSpice.
> If it doesn't work, fix the character encoding issue in the value of some
> components.
> 
> Don't worry it won't be going into production any time soon.
> 
> Comments/laugter is welcome.
> 
> Version 4
> SHEET 1 1956 680
> WIRE 1104 -80 368 -80
> WIRE 368 -16 368 -80
> WIRE 368 -16 304 -16
> WIRE 432 -16 368 -16
> WIRE 544 -16 432 -16
> WIRE 672 -16 544 -16
> WIRE 848 -16 768 -16
> WIRE 928 -16 848 -16
> WIRE 1232 -16 1008 -16
> WIRE 1376 -16 1232 -16
> WIRE 1520 -16 1376 -16
> WIRE 1632 -16 1520 -16
> WIRE 304 32 304 -16
> WIRE 1104 32 1104 -80
> WIRE 1232 32 1232 -16
> WIRE 544 64 544 -16
> WIRE 432 80 432 -16
> WIRE 1376 96 1376 -16
> WIRE 1376 96 1360 96
> WIRE 848 112 848 -16
> WIRE 1632 112 1632 -16
> WIRE 1360 128 1360 96
> WIRE 1376 128 1376 96
> WIRE 1520 128 1520 -16
> WIRE 1104 144 1104 112
> WIRE 1328 144 1104 144
> WIRE 1456 160 1392 160
> WIRE 304 176 304 112
> WIRE 544 176 544 144
> WIRE 592 176 544 176
> WIRE 688 176 688 32
> WIRE 688 176 656 176
> WIRE 1232 176 1232 112
> WIRE 1328 176 1232 176
> WIRE 1104 192 1104 144
> WIRE 1232 192 1232 176
> WIRE 544 208 544 176
> WIRE 688 224 688 176
> WIRE 304 336 304 256
> WIRE 432 336 432 144
> WIRE 432 336 304 336
> WIRE 544 336 544 288
> WIRE 544 336 432 336
> WIRE 848 336 848 176
> WIRE 848 336 544 336
> WIRE 1104 336 1104 272
> WIRE 1104 336 848 336
> WIRE 1232 336 1232 272
> WIRE 1232 336 1104 336
> WIRE 1344 336 1344 192
> WIRE 1344 336 1232 336
> WIRE 1360 336 1360 192
> WIRE 1360 336 1344 336
> WIRE 1376 336 1376 192
> WIRE 1376 336 1360 336
> WIRE 1520 336 1520 192
> WIRE 1520 336 1376 336
> WIRE 1632 336 1632 192
> WIRE 1632 336 1520 336
> WIRE 304 352 304 336
> WIRE 688 400 688 288
> WIRE 1456 400 1456 160
> WIRE 1456 400 688 400
> FLAG 304 352 0
> SYMBOL Comparators\\LT1719 1360 96 R0
> WINDOW 0 37 82 Left 2
> WINDOW 3 26 27 Left 2
> SYMATTR InstName U1
> SYMBOL res 1088 16 R0
> WINDOW 0 -36 27 Left 2
> WINDOW 3 -71 76 Left 2
> SYMATTR InstName R1
> SYMATTR Value 47.5K
> SYMATTR SpiceLine tol=1 pwr=0.1
> SYMBOL res 1088 176 R0
> WINDOW 0 -43 30 Left 2
> WINDOW 3 -59 64 Left 2
> SYMATTR InstName R2
> SYMATTR Value 10K
> SYMATTR SpiceLine tol=1 pwr=0.1
> SYMBOL ind 1024 -32 R90
> WINDOW 0 66 46 VBottom 2
> WINDOW 3 -27 53 VTop 2
> SYMATTR InstName L1
> SYMATTR Value 47µ
> SYMATTR SpiceLine Ipk=1.1 Rser=0.17 Rpar=0 Cpar=0 mfg="Sumida"
> pn="CD104-470"
> SYMBOL res 1616 96 R0
> SYMATTR InstName R4
> SYMATTR Value 5.1
> SYMATTR SpiceLine tol=1 pwr=0.1
> SYMBOL res 1216 16 R0
> WINDOW 0 -40 27 Left 2
> WINDOW 3 -50 74 Left 2
> SYMATTR InstName R3
> SYMATTR Value 14K
> SYMATTR SpiceLine tol=1 pwr=0.1
> SYMBOL res 1216 176 R0
> WINDOW 0 -42 26 Left 2
> WINDOW 3 -51 67 Left 2
> SYMATTR InstName R5
> SYMATTR Value 10K
> SYMATTR SpiceLine tol=1 pwr=0.1
> SYMBOL polcap 1504 128 R0
> WINDOW 3 24 56 Left 2
> SYMATTR Value 100µ
> SYMATTR InstName C1
> SYMATTR Description Capacitor
> SYMATTR Type cap
> SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.9 Lser=0 mfg="AVX" pn="TAJD107M006"
> type="Tantalum"
> SYMBOL schottky 864 176 R180
> WINDOW 0 24 64 Left 2
> WINDOW 3 24 0 Left 2
> SYMATTR InstName D2
> SYMATTR Value DFLS220L
> SYMATTR Description Diode
> SYMATTR Type diode
> SYMBOL pmos 768 32 M270
> WINDOW 0 -18 59 VLeft 2
> WINDOW 3 78 89 VLeft 2
> SYMATTR InstName M1
> SYMATTR Value AO6407
> SYMBOL voltage 304 160 R0
> WINDOW 0 11 100 Left 2
> WINDOW 3 38 54 Left 2
> WINDOW 123 0 0 Left 0
> WINDOW 39 -185 81 Left 2
> SYMATTR InstName V3
> SYMATTR Value 12
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