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Sendust Torroid used in HV Buck LED driver

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cupoftea

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Hi,
We are doing a DCM Buck LED driver. (LTspice attached)

F(sw) = 90kHz.
Vin = 390VDC
V(LEDs) = 228V
P(LEDs) = 155W
Peak L current = 2.15A
L = 62 turns round a MS-157060-2 sendust torroid. (2 strands of 0.315mm Enamelled copper wire)

The core loss adds up to 2W. Internal enclosure ambient is 60 degrees. Do you think the torroid will be OK?


MS157060-2 TORROID


Sendust material

MS - Sendust - Micrometals

www.micrometals.com www.micrometals.com
 

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