Hbridge design
Hbridge design
(OP)
I am designing an H bridge using the FDMS7556S mosfet.
The datasheet states - "This device has the added benefit of an efficient monolithic Shottky body diode."
Does this mean that I can omit the catch diodes?
The datasheet states - "This device has the added benefit of an efficient monolithic Shottky body diode."
Does this mean that I can omit the catch diodes?
RE: Hbridge design
Many times in MOSFETS this diode is not real great, and with inductive loads can result in EMI or extra heating of the MOSFET as the inductor kicks back when the MOSFET turns off. To handle the kick back in these situations, a separate diode must be added across the MOSFET with a lower forward voltage to take the current. With the FDMS7556S you will not need the extra diode unless you're driving a really high inductance, or a transformer with a high leakage inductance.
RE: Hbridge design
Keith Cress
kcress - http://www.flaminsystems.com
RE: Hbridge design
TTFN
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