BQ55090QTA27 Datasheet, PDF (1/14 Pages) SynQor Worldwide Headquarters – Quarter-brick DC-DC Converter

Technical
Specification
BQ55090QTA27
36-55 V
55 V
Continuous Input Transient Input
9.6 V
Output
The BusQor^® BQ55090QTA27 bus converter is a next-
generation, board-mountable, isolated, fixed switching
frequencydc/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 48V to 12 or 9.6V 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.
240 W 2000 V dc Quarter-brick
Max Power
Isolation
DC-DC Converter
Bus
Converter
Operational Features
• High efficiency, 96 % at full rated load current at
full load
• Delivers full power with minimal derating
- no heatsink required
• Operating input voltage range: 36-55 V dc
• Fixed frequency switching provides predictable EMI
• No minimum load requirement
Mechanical Features
• Industry standard quarter-brick pin-out configuration
(two or four output pin option)
• Size: 1.45” x 2.3” (36.8x58.4mm)
• Total height: 0.445” (11.3mm)
• Total weight: 1.5 oz (42 g)
Protection Features
• Input under-voltage lockout and over-voltage
shutdown protects again abnormal input voltages
• Output current limit and short circuit protection
(auto recovery)
• Output over-voltage protection
• Thermal shutdown
Control Features
BQ55090QTA27
Module
• On/Off control referenced to input side
• Inherent current share (by droop method) for high
current and parallel applications.
Safety Features
• 2000 V input-to-output isolation
• UL 60950-1:2003
• CAN/CSA-C22.2 No. 60950-1:2003
• EN60950-1:2001
• Needle Flame Test (IEC 695-2-2)
• IEC 61000-4-2
• RoHS compliant (see page 14)
Contents
Page No.
MECHANICAL DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
BQ55090QTA27 ELECTRICAL CHARACTERISTICS. . . . . . . . . . . . . . . 3-4
BQ55090QTA27 Standards and Qualifications . . . . . . . . . . . . . . . . . . . . 5
BQ55090QTA27 Figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-13
ORDERING INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Product # BQ55090QTA27
Phone [phone]
www.synqor.com
Doc.# 005-2BQ559J Rev. C
04/02/09
Page 1