BQ55090QZB84 Datasheet, PDF (1/13 Pages) SynQor Worldwide Headquarters – No minimum load requirement

Technical
Specification
BQ55090QZB84
35-55V
Continuous Input
9.6V
Output
84A
Current
781W
Power
2000V dc
Isolation
The BusQor® BQ55090QZx84 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 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.
Quarter-brick
DC-DC Converter
®
Operational Features
• High efficiency, 97% at full rated load current
• Delivers 84A full power with appropiate derating
• Operating input voltage range: 35-55V
• Fixed frequency switching provides predictable EMI
• No minimum load requirement
Control Features
• On/Off control referenced to input side
(negative logic only)
• Inherent current share (by droop method) for high current and
parallel applications.
Safety Features
• UL 60950-1/R2011-12
• EN60950-1/A2:2013
• CAN/CSA-C22.2 No. 60950-1/A1:2011
BQ55090QZB84 Model
Mechanical Features
• Industry standard quarter-brick pin-out configuration
• Size: 1.51"x 2.34" (38.4 x 59.4mm), height: 0.517" (13.13mm)
• Total Baseplate weight: 2.67 oz (75.7 g)
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
Contents
Page No.
Baseplated Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Compliance & Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Technical Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Applications Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Product # BQ55090QZB84
Phone [phone]
www.synqor.com
Doc.# 005-0006286 Rev. C
02/10/16
Page 1