Technical
S pecification
PQ40050QGA20
18-75V
Input
5.0V
Output
20Amp
Current
2000Vdc
Isolation
Quar ter-brick
DC/DC Conver ter
The PQ400 50QGA20 PowerQor
™
Giga quarter-brick
b
converter is a next-generation, board-mountable, isolated,
g
m
fixed switching frequency DC/DC converter that uses syn-
chronous rectification to achieve extremely high conver-
sion efficiency. The power dissipated by the converter is
so low that a heatsink is not required, which saves cost,
weight, height, and application effort. All of the power
and control components are mounted to the multi-llayer
PCB substrate with high-yield surface mount technology for
y
greater reliability. The PQ40 module offers a wide input
voltage range to cover both 24V and 48V applications.
Operational Features
• High efficiency, 89% at full rated load current
• Delivers up to 20 amps of output current (100W) with
minimal derating - no heatsink required
• Ultra wide input voltage range: 18V – 75V, with 100V
100ms input voltage transient capability
• Fixed frequency switching provides predictable EMI per-
formance
• No minimum load requirement means no preload resis-
tors required
PQ40050QGA20 Module
Pr otection Features
• Input under-voltage lockout disables converter at low
input voltage conditions
• Output current limit and short circuit protection protects
converter and load from permanent damage and conse-
quent hazardous conditions
• Active back bias limit prevents damage to converter
from external load induced pre-bias
• Output over-voltage protection protects load from dam-
aging voltages
• Thermal shutdown protects converter from abnormal
environmental conditions
Mechanical Features
• Industry standard quarter-brick pin-out configuration
• Industry standard size: 1.45” x 2.3” (36.8x58.4mm)
• Total height only 0.43” (10.9mm), permits better airflow
and smaller card pitch
• Total weight: 1.2 oz. (34 grams)
• Flanged pins designed to permit surface mount solder-
ing (avoid wave solder) using FPiP technique
Safety Features
• 2000V, 30 MΩ input-to-output isolation provides
input/output ground separation
• UL/cUL 60950 recognized (US & Canada), basic
insulation rating
• TUV certified to EN60950
• Meets 72/23/EEC and 93/68/EEC directives which
facilitates CE Marking in user’s end product
• Board and plastic components meet UL94V-0 flamma-
bility requirements
Contr ol 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 volt-
age margining
Product # PQ40050QGA20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2QG350D Rev. A
11/8/04
Page 1
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