Hi we are using NXP 2N7002P Mosfet in our design which is getting damaged frequently. Gate is controlled by GPIO from NXP LPC 1833 Controller. Please Help Us on this

abhilashsurendr · ‎03-21-2018

Hi

we are using NXP 2N7002P Mosfet in pne of our Production Test Setup design which is getting damaged frequently.

Gate is controlled by GPIO from NXP LPC 1833 Controller. Drain Is pulled up from external DUT and Used for Resetting the DUT (Device under test)

Please Help Us on this.

guoweisun · ‎03-23-2018

Hi,

Please notice that 2N7002P is P-channel MOSFET,you can't use it in your schematic.

abhilashsurendr · ‎03-26-2018

Hi,

2N7002P is N-Channel Mosfet Please see the datasheet Link

Best Regards,

Abhilash Surendran

VVDN Technologies Pvt Ltd

Cell: +91 9809305675 | Skype : abhilashsurendran@hotmail.com

guoweisun · ‎03-28-2018

Hi,

Please try increase the pull up resistor to try for example 1K.

guoweisun · ‎03-22-2018

Hi,

Other question,why do you select this VDS about 60V MOSFET in your 3.3V(drain connection) application?

abhilashsurendr · ‎03-22-2018

Hi,

The gate is controlled by NXP LPC1833 GPIO 3.3V.

VDS 60V Mosfet was available in our stock. That's why we have chosen that.

Best Regards,

Abhilash Suredran

VVDN Technologies Pvt Ltd

Cell: +91 9809305675 | Skype : abhilashsurendran@hotmail.com

guoweisun · ‎03-21-2018

Hi,

This kind of standard products had already transfered to ----www.nexperia.cn last year.

Please also contact with them for detail.

Anyway from my side,please check the GATE drive signal and voltage level.

I don't see the pull up resistor value and pull up voltage of drain pin,please also check.

abhilashsurendr · ‎03-21-2018

Hi guoweisun

The pull up is there at the end where the device Under test is connected.

Pulled up to 3.3 Via 10 Resistor. The drain of the MOSFET comes in contact

to TP63 test point in DUT as shown in image attached.

Best Regards,

Abhilash Suredran

VVDN Technologies Pvt Ltd

Cell: +91 9809305675 | Skype : abhilashsurendran@hotmail.com

guoweisun · ‎03-22-2018

Hi,

What is the GATE drive signal and voltage level?