Smart P-channel MOSFETs in DPAK package?

[Gareth]

I'm looking for a smart P-channel MOSFET in a DPAK package, ideally
something like a P-channel version of the VND5N07 from ST's OMNIFET range.

I have see several high side drivers but I can't find any in a D-PAK
package and I would like to fit the device to an existing PCB.

Thanks for any suggestions,

Gareth.
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[legg]

On Mon, 10 May 2004 19:43:43 +0100, Gareth <me@privacy.net> wrote:

I'm looking for a smart P-channel MOSFET in a DPAK package, ideally
something like a P-channel version of the VND5N07 from ST's OMNIFET range.

I have see several high side drivers but I can't find any in a D-PAK
package and I would like to fit the device to an existing PCB.

Is this for low repetition events or for PWM?

By smart, what do you expect - simple current limiting?

For low rep rates, here are a number of integrated bus controllers
dedicated to driving external NMOS, though some have lower powered
integrated PMOS switches for low voltage applications. They can get
pretty complicated and application-dedicated.

Something like TPS2490 works above 50V to drive NMOS hot-swap rail
switches.

RL

 

[Winfield Hill]

Gareth wrote...

I'm looking for a smart P-channel MOSFET in a DPAK package, ideally
something like a P-channel version of the VND5N07 from ST's OMNIFET range.

I have see several high side drivers but I can't find any in a D-PAK
package and I would like to fit the device to an existing PCB.

Most high-side drivers use N-channel FETs internally, rather than
P-channel, to save silicon. There are a number of D-Pak parts you
could consider, for example those made by Infineon. Their BTS428
is a 7A switch, in stock at Digi-Key. The BTS443 is rated at 25A.
This class of part does have a slow turn-on time.



Thanks,
- Win

(email: use hill_at_rowland-dot-org for now)

 

[Gareth]

legg wrote:

On Mon, 10 May 2004 19:43:43 +0100, Gareth <me@privacy.net> wrote:


I'm looking for a smart P-channel MOSFET in a DPAK package, ideally
something like a P-channel version of the VND5N07 from ST's OMNIFET range.

I have see several high side drivers but I can't find any in a D-PAK
package and I would like to fit the device to an existing PCB.


Is this for low repetition events or for PWM?

PWM

By smart, what do you expect - simple current limiting?

Current limiting and thermal shutdown.

For low rep rates, here are a number of integrated bus controllers
dedicated to driving external NMOS, though some have lower powered
integrated PMOS switches for low voltage applications. They can get
pretty complicated and application-dedicated.

Something like TPS2490 works above 50V to drive NMOS hot-swap rail
switches.

Thanks for the suggestion but that is not really what I had in mind.

I have on a PCB two MOSFETs, one N-channel and one P-channel, such that
an output can be connected to either +24v or -24V. I would like to make
it a bit more robust by replacing these MOSFETs with devices which
include protection against short circuits and overheating. I have found
several devices which would be suitable for the N-channel (e.g.
VND5N07), but I cannot find a pin for pin compatible smart p-channel device.

Gareth.

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[legg]

On Mon, 10 May 2004 20:57:49 +0100, Gareth <me@privacy.net> wrote:

legg wrote:

On Mon, 10 May 2004 19:43:43 +0100, Gareth <me@privacy.net> wrote:


I'm looking for a smart P-channel MOSFET in a DPAK package, ideally
something like a P-channel version of the VND5N07 from ST's OMNIFET range.

I have see several high side drivers but I can't find any in a D-PAK
package and I would like to fit the device to an existing PCB.


Is this for low repetition events or for PWM?

PWM

By smart, what do you expect - simple current limiting?

Current limiting and thermal shutdown.

For low rep rates, here are a number of integrated bus controllers
dedicated to driving external NMOS, though some have lower powered
integrated PMOS switches for low voltage applications. They can get
pretty complicated and application-dedicated.

Something like TPS2490 works above 50V to drive NMOS hot-swap rail
switches.

Thanks for the suggestion but that is not really what I had in mind.

I have on a PCB two MOSFETs, one N-channel and one P-channel, such that
an output can be connected to either +24v or -24V. I would like to make
it a bit more robust by replacing these MOSFETs with devices which
include protection against short circuits and overheating. I have found
several devices which would be suitable for the N-channel (e.g.
VND5N07), but I cannot find a pin for pin compatible smart p-channel device.

Gareth.

This is a dpack, but with 5 pins. It is actually a smart NMOSfet with
an integrated high-side driver.

http://www.infineon.com/cgi/ecrm.dll/ecrm/scripts/public_download.jsp?oid=37212&parent_oid=31860

others
http://www.infineon.com/cgi/ecrm.dll/ecrm/scripts/prod_ov.jsp?oid=13853&cat_oid=-8171

I believe it was only the Germans and the French that took this
seriously, as a discrete solution. ST was the French side. IR stopped
at the sensefet. The Japanese don't believe in this intermediate
integration step.

RL

 

[Gareth]

Gareth wrote:

I'm looking for a smart P-channel MOSFET in a DPAK package, ideally
something like a P-channel version of the VND5N07 from ST's OMNIFET range.

I have see several high side drivers but I can't find any in a D-PAK
package and I would like to fit the device to an existing PCB.

Thanks for any suggestions,

Gareth.

Thanks Winn and Legg for the suggestions, it looks like the Infineon
parts are the closest to what I am looking for.

Gareth.

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