Technical Specification
Brick Dual
48Vin 3.3/1.8Vout 40W
Quarter
Dual Output, High Efficiency, Isolated DC/DC Converter
The DQ63318QMA04 DualQor™ series is a dual output
converter that uses the industry standard quarter brick
package size. The very high efficiency is a result of
SynQor’s patented topology that uses synchronous recti-
fication and an innovative construction design to mini-
mize 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 technolo-
gy, resulting in a more reliable product.
Dual Output
DQ63318QMA04 Module
Operational Features
• High efficiency, 83% 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 from excessive load current or
short circuits
• 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”
• Low profile of only 0.43”, permits better airflow and
smaller card pitch
• Total weight: 1.5 oz (43 g), lower mass reduces
vibration and shock problems
Safety Features
• 2000V, 10 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 # DQ63318QMA04
Phone 1-888-567-9596
Doc.# 005-2DQ638H Rev. A
1/10/03
Page 1
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