Technical Specification
Quarter
Brick
24Vin 12Vout 8.3A
100 Watts, No Heatsink, Isolated DC/DC Converter
The PQ24120QGA08 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 technolo-
gy. Since the PowerQor converter has no explicit
thermal connections, it is extremely reliable.
PQ24120QGA08 Module
Operational Features
• High efficiency, >88% at full rated load current
• Delivers up to 8.3 amps of output current (100W)
with minimal derating - no heatsink required
• Wide input voltage range: 18V – 36V meets or
exceeds all 24V bus standards
• 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 quarter-brick pin-out configuration
• Industry standard size: 1.45” x 2.3”
• Total height less than 0.40”, permits better airflow
and smaller card pitch
• Total weight: 34 grams (1.2 oz.), lower mass great-
ly reduces vibration and shock problems
Safety Features
• 2000V, 10 MΩ input-to-output isolation provides
input/output ground separation
• UL 1950 recognized (US & Canada), basic insula-
tion rating
(pending)
• TUV certification to EN60950
(pending)
• Meets 72/23/EEC and 93/68/EEC directives
which facilitates CE Marking in user’s end product
• Board and plastic components meet 94V-0 flamma-
bility requirements
• NEBS and ETSI compliant
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
Product # PQ24120QGA08
Phone 1-888-567-9596
Doc.# 005-2QG212D_A
3/1/02
Page 1
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