SQ60120QEx25 DC-DC Converter


100 V

12 V


2250 V dc


Continuous Input

Transient Input


Max Power


DC-DC Converter

Product Details

The SQ60120QEx25 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 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, 96% at full rated load current
• Delivers 25A (300W) power with minimal derating - no heatsink required
• Operating input voltage range: 35-75Vdc
• Fixed frequency switching provides predictable EMI
• No minimum load requirement

Mechanical Features

• Industry standard pin-out configuration
• Standard Size Open Frame:1.45 x 2.30" (36.8 x 58.4mm)
• Total Open Frame height only 0.417” (10.59mm), permits better airflow and smaller card pitch
• Open Frame Weight: 1.5 oz. (42g)
• Flanged pins designed to permit surface mount soldering (avoid wave solder) using FPiP technique

Control Features

• On/Off control referenced to input side

Safety Features

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

Protection Features

• Input under-voltage lockout disables converter at low Vin conditions
• Output current limit and short circuit protection protects converter and load from permanent damage and hazardous conditions
• Active back bias limit provides smooth startup with external load induced pre-bias