Product # PQ55540HTL05
Phone 1-888-567-9596
Doc.# 005-2HT554F Rev. A
04/20/06
Page 1
T
Technical
echnical
S
Specification
pecification
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PQ55540HTL05 Module
38-55V
54V
275W
2250Vdc
Half-brick
Input
Output
Power
Isolation
DC/DC Conver
DC/DC Conver ter
ter
Ultra-high efficiency, 93% at full rated load current
Delivers up to 275 Watts of output power with mini-
mal derating - no heatsink required
Input voltage range: 38V – 55V suitable for 48V bus
applications
Fixed frequency switching provides predictable EMI
performance
Operational Features
Input under-voltage lockout disables converter at low
input voltage conditions
Output current limit and short circuit shutdown protects
converter and load from permanent damage
Active back bias limit prevents damage to converter
from external load induced pre-bias
Output over-voltage protection
Thermal shutdown
Pr
Protection Features
otection 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
Contr
Control Features
ol Features
2250V, 30 M
input-to-output isolation
UL/cUL 60950-1 recognized (US & Canada), basic
insulation rating
TUV certified to EN60950-1
Meets 72/23/EEC and 93/68/EEC directives
Meets UL94V-0 flammability requirements
Safety Features
Industry standard half-brick pin-out configuration
Industry standard size: 2.3” x 2.4” (58.4 x 61.0mm)
Total height only 0.34” (8.7mm), permits better airflow
and smaller card pitch
Total weight: 2.6 oz. (75 grams)
Mechanical Features