BQ55120ETx16 DC-DC Converter

35-55 V

12 V

16 A

192 W

2000 V dc







DC-DC Converter

Product Details

The BusQor® BQ55120ETL16 bus converter is a next-generation, 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 35-55 V to 12 V 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 (non-isolated) converters in intermediate bus architectures.

Operational Features

• High efficiency, 95% at full rated load current
• Delivers 16 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 eighth-brick bus converter pin-out
• Size: 0.90” x 2.3” (22.9x58.4mm) x 0.320” (8.13 mm)
• Total weight: 0.81 oz (23 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 60950-1:2007/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
• Output current limit and short circuit protection (auto recovery)
• Thermal shutdown