BQ57120QEx50 DC-DC Converter

52.5 V

9.3-16.25 V

50 A

630 W

2000 V dc







DC-DC Converter

Product Details

The BusQor® BQ57120QEx50 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 heat sink is not required, which saves cost, weight, height, and application effort. The BusQor series provides an isolated step down voltage from 52.5 V to 13.1 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, 96.25% at full rated load current
• Delivers 50 A full power with minimal derating - no heatsink required
• Operating input voltage range: 40-65 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” (36.8 x 58.4 mm), 0.467” (11.86 mm)
• 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

• CAN/CSA C22.2 No. 60950-1
• UL 60950-1
• EN 60950-1

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