SQ60120QZx40 DC-DC Converter


100 V

12 V


2250 V dc


Continuous Input

Transient Input


Max Power


DC-DC Converter

Product Details

The BusQor® SQ60120QZB40 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 SQ BusQor series provides an isolated step down voltage from 48V to a semi-regulated 12V intermediate bus. BusQor converters are ideal for customers who need multiple outputs and wish to build or buy point of load converters to work with a 12V rail. RoHS Compliant (see last page).

Operational Features

• High efficiency, 95.3% at full rated load current
• Delivers 40A (450W) power with minimal derating - no heatsink required
• Operating input voltage range: 36-75Vdc
• Fixed frequency switching provides predictable EMI
• No minimum load requirement

Mechanical Features

• Industry standard quarter-brick pin-out configuration
• Size: 2.30" x 1.45" (58.4 x 36.8mm), 0.500” (12.70mm)
• Total weight: 2.2 oz (62 g)

Control Features

• On/Off control referenced to input side
• Inherent current share (by droop method) for high current and parallel applications.

Safety Features

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

Protection Features

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