BQ55090QEx60 DC-DC Converter

52.5 V

9.6 V

60 A

546 W

2000 V dc







DC-DC Converter

Product Details

The BusQor BQ55090QEx60 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 power dissipated by the converter is so low that a heatsink is not required, which saves cost, weight, height, and application effort. The BusQor series provides an isolated step down voltage from 48 V to 12 or 9.6 V intermediate bus with no regulation in a standard quarter-brick module. BusQor converters are ideal for creating the mid-bus voltage required to drive point-of-load (non-isolated) converters in intermediate bus architectures.

Operational Features

• High efficiency, 96.6% at full rated load current
• Delivers 60 A full power with minimal derating - no heatsink required
• Operating input voltage range: 35-55 V
• Fixed frequency switching provides predictable EMI
• No minimum load requirement

Mechanical Features

• Industry standard quarter-brick pin-out configuration
• Size: 1.45” x 2.3” (36.8x58.4mm), height: 0.467” (11.86mm)
• Total open frame weight: 1.5 oz (42 g)

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/R2011-12
• EN60950-1/A2:2013
• CAN/CSA-C22.2 No. 60950-1/A1:2011

Protection Features

• Input under-voltage lockout and over-voltage shutdown protects against abnormal input voltages
• Output current limit and short circuit protection (auto recovery)
• Output over-voltage protection
• Thermal shutdown