PQ55540HTL05 Datasheet, PDF (1/13 Pages) SynQor Worldwide Headquarters – Half-brick DC/DC Converter

Technical
Specification
PQ55540HTL05
38-55V 54V
Input
Output
275W
Power
2250Vdc
Half-brick
Isolation DC/DC Converter
The PQ55540HTL05 PowerQor^® Tera half-brick converter is
a next-generation, board-mountable, isolated, fixed switch-
ing frequency DC/DC converter that uses synchronous recti-
fication 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 appli-
cation effort. The Tera series converters offer the maximum
useable output power for a standard “half-brick” module.
The 54V Tera units are designed to be used primarily in
Power over Ethernet (PoE) applications. RoHS Compliant (see
page 12).
Operational Features
• Ultra-high efficiency, 93% at full rated load current
• Delivers up to 275 Watts of output power with mini-
mal derating - no heatsink required
• Input voltage range: 38V – 55V suitable for 48V bus
applications
• Fixed frequency switching provides predictable EMI
performance
Mechanical Features
• Industry standard half-brick pin-out configuration
• Industry standard size: 2.3” x 2.4” (58.4 x 61.0mm)
• Total height only 0.34” (8.7mm), permits better airflow
and smaller card pitch
• Total weight: 2.6 oz. (75 grams)
Control Features
• On/Off control referenced to input side (positive and
negative logic options are available)
• Remote sense for the output voltage compensates for
output distribution drops
• Output voltage trim permits custom voltages and voltage
margining
PQ55540HTL05 Module
Protection Features
• Input under-voltage lockout disables converter at low
input voltage conditions
• Output current limit and short circuit shutdown protects
converter and load from permanent damage
• Active back bias limit prevents damage to converter
from external load induced pre-bias
• Output over-voltage protection
• Thermal shutdown
Safety Features
• 2250V, 30 MΩ 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 # PQ55540HTL05
Phone [phone]
www.synqor.com
Doc.# 005-2HT554F Rev. A
04/20/06
Page 1