Q48T20025 Data Sheet

Category: Electronics, Other Semiconductors, Powerone

Overview

The Q48T20025 data sheet presents a cutting-edge DC/DC converter specializing in powering digital applications, particularly in a quarter-brick format. This converter offers a compelling blend of high efficiency, thermal performance, and a slim profile, which is ideal for the telecommunications sector. It supports a broad input voltage range of 36-75 Vdc and is capable of delivering a 20 A current at 2.5 Vdc output, distinguishing itself from competitors with its higher performance at elevated temperatures.

Key Features

Current Delivery: Capable of supplying up to 20 A with better current handling at 70°C compared to most 25 A and 30 A quarter bricks in the market.
Efficiency: Maintains high efficiency levels of 84.5% at full load (20 A) and 87% at 10 A load.
Load Compatibility: Capable of start-up with a pre-biased output, it requires no minimum load and does not require a heatsink, showcasing flexibility in various operating conditions.
Profile and Weight: Offers the lowest profile at 0.28 inches [7.2 mm] and weight in the industry, 0.88 oz [25 g], leading to minimal airflow shadowing and enhanced cooling for downstream elements.
Physical Characteristics: Adheres to industry-standard footprint and pinout for easy integration within existing systems.
Electrical Performance: Withstands 100 V input transients for 100 ms and incorporates an LC input filter for cleaner power output, and a trim range for output voltage adjustment.
Protection and Compliance: The converter meets the basic insulation requirements of EN60950, has a variety of safety certifications including UL 60950 in the U.S. & Canada, and complies with emission requirements.
Reliability: High MTBF of 2.6 million hours, according to Telcordia TR-332.

Applications

The Q48T20025 converter is primarily designed for use in telecommunications, data communications, wireless infrastructure, and server applications. Its input transient resistance and insulating properties make it a robust choice for these high-demand environments.

Thermal and Mechanical Advantages

One significant advantage of the Q48T20025 is its thermal efficiency, which surpasses other quarter bricks and rivals that of half-brick converters. The datasheet includes Figure 1, which graphs available load current against ambient air temperature and airflow rates, illustrating its superior performance under various thermal conditions.

Additional Options

For system designers looking for specific operational behavior, the converter offers a choice between positive or negative logic for the ON/OFF function. It also complies with stringent flammability ratings, ensuring safe operation within diverse electrical setups.