I am designing a full bridge SMPS of 1kW, with input of 120V, at 42.5kHz.
I have selected a choice of IRFP4668 or IRFB4127 MOSFETs, both 200V.
IRFP4668 - 200V 130A
Rds ON 0.0097 Ohm
Trise+Fall 180ns
TO247AC
IRFB4127 - 200V 76A
Rds ON 0.020 Ohm
Trise+Fall 40ns
TO220
4 Nos. of IRFB4127 has a loss of about 15W, and IRFP4668 25W. I am inclined towards IRFB4127, due to efficiency and half the price, but is TO220. Since the Trise+fall is 40ns would there be any problems of fast rise and fall times? Is the choice of MOSFET alright?
Thanks in advance.
I have selected a choice of IRFP4668 or IRFB4127 MOSFETs, both 200V.
IRFP4668 - 200V 130A
Rds ON 0.0097 Ohm
Trise+Fall 180ns
TO247AC
IRFB4127 - 200V 76A
Rds ON 0.020 Ohm
Trise+Fall 40ns
TO220
4 Nos. of IRFB4127 has a loss of about 15W, and IRFP4668 25W. I am inclined towards IRFB4127, due to efficiency and half the price, but is TO220. Since the Trise+fall is 40ns would there be any problems of fast rise and fall times? Is the choice of MOSFET alright?
Thanks in advance.