BQ55090EZx48 DC-DC Converter

35-55V

9.6V

48A

2000V dc

Eighth-brick

Continuous Input

Output

Current

Isolation

DC-DC Converter

Product Details

The BusQor® BQ55090EZx48 bus converter is a nextgeneration, board-mountable, isolated, fixed switching frequency dc/dc converter that uses synchronous rectification to achieve extremely high conversion efficiency. The BusQor series provides an isolated step down voltage from 48V to 12 or 9.6V intermediate bus with no regulation in a standard “eighth-brick” module. BusQor converters are ideal for creating the mid-bus voltage required to drive point-of-load (nonisolated) converters in intermediate bus architectures.

Operational Features

• High efficiency, 97.1% at full rated load current
• Delivers 48A full power with minimal derating - no heatsink required
• Operating input voltage range: 35-55V
• Fixed frequency switching provides predictable EMI
• No minimum load requirement

Mechanical Features

• High efficiency, 97.1% at full rated load current
• Delivers 48A full power with minimal derating - no heatsink required
• Operating input voltage range: 35-55V
• Fixed frequency switching provides predictable EMI
• No minimum load requirement

Control Features

• On/Off control referenced to input side (positive and negative logic options are available)
• Inherent current share (by droop method) for high current and parallel applications.

Safety Features

• UL 60950-1:2007/R:2011-12
• EN 60950-1:2006/A2:2013
• CAN/CSA C22.2 No. 60950-1:2007/A1:2011

Protection Features

• Input under-voltage lockout and over-voltage shutdown protects against abnormal input voltages

BQ55090EZx48

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