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The QW050A1 and QW075A1 Power Modules are dc-dc converters that operate over an input voltage range of 36 Vdc to 75 Vdc and provide a precisely regulated dc output. The outputs are fully isolated from the inputs, allowing versatile polarity configurations and grounding connections. The modules have maximum power ratings from 50 W to 75 W at a typical full-load efficiency of 84%.
The sealed modules offer a metal baseplate for excellent thermal performance. Threaded-through holes are provided to allow easy mounting or addition of a heat sink for high-temperature applications. The standard feature set includes remote sensing, output trim, and remote on/off for convenient flexibility in distributed power applications.
QW075A1 Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.
Parameter
Symbol
Min
Max
Unit
Input Voltage: Continuous Transient (100 ms)
VI VI, trans
- -
70 100
Vdc V
Operating Case Temperature (See Thermal Considerations section; see Figure 22.)
TC
-40
100
Storage Temperature
Tstg
-55
125
I/O Isolation Voltage (for 1 minute)
-
-
1500
Vdc
QW075A1 Features
· Small size: 36.8 mm x 57.9 mm x 12.7 mm (1.45 in. x 2.28 in. x 0.50 in.) · High power density · High efficiency: 84% typical · Low output noise · Constant frequency · Industry-standard pinout · Metal baseplate · 2:1 input voltage range · Overvoltage and overcurrent protection · Remote on/off · Remote sense · Adjustable output voltage · Overtemperature protection · ISO* 9001 Certified manufacturing facilities · UL†1950 Recognized, CSA‡ C22.2 No. 950-95 Certified, and VDE§0805 (EN60950, IEC950) Licensed · CE mark meets 73/23/EEC and 93/68/EEC directives**