LM5046 Phase-Shifted Full-Bridge PWM Controller with Integrated MOSFET Drivers

[kak111]

LM5046
Phase-Shifted Full-Bridge PWM Controller with Integrated MOSFET Drivers

Using a Phase-Shifted Full-Bridge Topology in Small Form Factor Power Converters

Phase-Shifted Full-Bridge (PSFB) topology has been traditionally used in high input voltage (~400V), high power
(>500W) converters that are usually not required to be packed in a small form factor such as the telecom industry
standard 1/4th (2.28*1.45 inches) and 1/8th brick format (2.28*0.89 inches). The complexity of the topology,
lack of easy-to-use controllers, its perceived benefits only at high input voltages and the use of an additional commutating
inductor for resonant transitions are some of the reasons why PSFB topology has not been applied at standard telecom
input range of 36V to 75V. The LM5046 is the industry's first PSFB controller with integrated 100V primary drivers.
Its high level of integration eases application of PSFB topology into small form factor power converters.

Datasheet
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Lab Demo Video
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Application Notes
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