Technical Specification
Quarter
48V 1.5V
25A
out
in
Brick
25 Amp, No Heatsink, Isolated DC/DC Converter
The PQ60015QGA25 PowerQor™ Giga quarter-
brick converter is a next-generation, board-mount-
able, isolated, fixed switching frequency DC/DC
converter that uses synchronous rectification 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 application effort. All of the power and
control components are mounted to the multi-layer
PCB substrate with high-yield surface mount tech-
nology. Since the PowerQor converter has no
explicit thermal connections, it is extremely reliable.
PQ60015QGA25 Module
Operational Features
Protection Features
• Ultra-high efficiency, 81% at full rated load current
• Input under-voltage lockout disables converter at
• Delivers up to 25 amps of output current with mini-
mal derating - no heatsink required
low input voltage conditions
• Output current limit and short circuit protection
protects converter from excessive load current or
short circuits
• Wide input voltage range: 35V – 75V, with 100V
100ms input voltage transient withstand
• Fixed frequency switching provides predictable EMI
performance
• Output over-voltage protection protects load from
damaging voltages
• No minimum load requirement means no preload
• Thermal shutdown protects converter from abnor-
mal environmental conditions
resistors required
Mechanical Features
Safety Features
• Industry standard quarter-brick pin-out configuration
• Industry standard size: 1.45” x 2.3”
• 2000V, 10 MΩ input-to-output isolation provides
input/output ground separation
• Total height less than 0.40”, permits better airflow
• UL/cUL 60950 recognized (US & Canada), basic
and smaller card pitch
insulation rating
• Total weight: 34 grams (1.2 oz.), lower mass great-
ly reduces vibration and shock problems
• TUV certified to EN60950
• Meets 72/23/EEC and 93/68/EEC directives
which facilitates CE Marking in user’s end product
Control Features
• Board and plastic components meet UL94V-0 flam-
mability requirements
• 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
Product # PQ60015QGA25
Phone 1-888-567-9596
Doc.# 005-2QG651D Rev. A
12/19/02
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