Technical Specification
Brick Dual
48Vin 3.3/2.5Vout 40W
Quarter
Dual Output, High Efficiency, Isolated DC/DC Converter
The DQ63325QMA04 DualQor
™
series is a dual output
DC/DC converter that uses the industry standard quar-
ter brick package size. The very high efficiency is a
result of SynQor’s patented topology that uses synchro-
nous rectification and an innovative construction design
to minimize heat dissipation and allow extremely high
power densities. 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-layer PCB substrate with high-yield surface
mount technology, resulting in a more reliable product.
Dual Output
DQ63325QMA04 Module
Operational Features
• High efficiency, >85% at full rated load current
• Delivers up to 40 Watts of output power with mini-
mal derating - no heatsink required
• Wide input voltage range: 35V – 75V, with 100V
100ms input voltage transient withstand
• Fixed frequency switching provides predictable EMI
performance
• No minimum load requirement means no preload
resistors required
Protection 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 consequent hazardous conditions
• Active back bias limit prevents damage to convert-
er from external load induced pre-bias
• Output over-voltage protection protects load from
damaging voltages
• Thermal shutdown protects converter from abnor-
mal environmental conditions
Mechanical Features
• Industry standard pin-out configuration
• Industry standard size: 1.45” x 2.3”
(36.8x58.4mm)
• Total height less than 0.43”
(10.9mm),
permits better
airflow and smaller card pitch
• Total weight: 1.5 oz.
(43 g)
• Flanged pins designed to permit surface mount sol-
dering (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 flam-
mability requirements
Control Features
• On/Off control referenced to input side (positive
and negative logic options are available)
• Output voltage trim: +10%/-10%, permits custom
voltages and voltage margining
Product # DQ63325QMA04
Phone 1-888-567-9596
Doc.# 005-2DQ632H Rev. C
7/7/04
Page 1
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