BQ55090ETA27 Datasheet, PDF (1/13 Pages) SynQor Worldwide Headquarters – Eighth-brick DC Bus Converter

Technical
Specification
BQ55090ETA27
35-55V 9.6V
Input
Output
27A
Current
2000Vdc Eighth-brick
Isolation DC Bus Converter
The BusQor^® BQ55090ETA27 bus converter is a next-gen-
eration, board-mountable, isolated, fixed switching frequency
DC/DC converter that uses synchronous rectification to
achieve extremely high conversion efficiency. The power dis-
sipated 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 volt-
age from 48V to a 9.6V intermediate bus with no regulation
in a standard “eighth-brick” module. BusQor converters are
ideal for creating the mid-bus voltage required to drive point-
of-load (non-isolated) converters in intermediate bus architec-
tures. RoHS compliant (see page 12).
Bus
Converter
Operational Features
• Ultra-high efficiency, >95% at full rated load current
• Delivers up to 27 amps of output current with minimal
derating - no heatsink required
• Input voltage range: 35V – 55V provides 6.5-11V bus
for distributed power architectures
• Fixed frequency switching provides predictable EMI per-
formance
Mechanical Features
• Industry standard eighth-brick bus converter pin-out
• Industry standard size: 0.90” x 2.3” x .484”
(22.9x58.4x11.76mm)
• Total weight: 0.7 oz. (20 grams)
• Flanged pins designed to permit surface mount solder-
ing (avoid wave solder) using FPiP technique
Control Features
• On/Off control referenced to input side (positive and
negative logic options available)
BQ55090ETA27 Module
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
Safety Features
• 2000V, 30 MW input-to-output isolation
• UL/cUL 60950-1 recognized (US & Canada), basic
insulation rating
• TUV certified to EN60950-1
• Meets 72/23/EEC and 93/68/EEC directives
• Meets UL94V-0 flammability requirements
Product # BQ55090ETA27
Phone [phone]
www.synqor.com
Doc.# 005-2BE559C Rev. B
10/10/06
Page 1