Introduction to the Q48T25018 DC-DC Converter
The Q48T25018 DC-DC Converter is a high-performance power module designed for telecommunications, data communications, wireless networks, and server applications. It features industry-leading efficiency and thermal performance, offering superior reliability and a low-profile design that enhances system cooling.
Key Features and Benefits
This quarter-brick format converter has a wide input voltage range of 36-75 VDC, generating an output of 1.8 VDC at 25A. Some notable features include:
– Up to 25 A output current
– High efficiency, with 85% at full load
– Start-up into pre-biased loads without a minimum load requirement
– No heat sink necessary due to excellent thermal performance
– Low profile and weight, measuring 0.28″ in height and weighing 28g
– Adheres to industry-standard footprints and pinouts
– Embedded LC input filter and fixed-frequency operation
– Remote output sense and a voltage trim range of +10% / -20%
– Complies with RoHS and meets the insulation requirements of EN60950
– High Mean Time Between Failures (MTBF) of 2.6 million hours
Protection and Compliance
The Q48T25018 is fully protected with features such as over-voltage protection and over-temperature shutdown. It meets FCC Class B and EN55022 Class B emissions requirements with an external filter and can withstand a 100 V input transient for 100 ms. Materials used are UL94 V-0 flame retardant, ensuring safe operation.
Performance and Applications
Providing superior performance at high ambient temperatures and airflow rates, this DC-DC converter is suitable for demanding applications where space and cooling are constrained. Its applications extend primarily to the telecommunications and data communications industries, but it is also fit for use in server and wireless network equipment.
Electrical Specifications
The electrical specifications define the operating conditions of the Q48T25018, such as an operating input voltage range of 36-75 VDC. Other important parameters include the current limit inception point at 25A and the switching frequency at 230-435 kHz. Remote sensing and output voltage trims extend the converter’s versatility, making it adaptable to different system needs.
Additional Notes:
The output voltage can be fine-tuned through sense leads or via the trim function, but should not exceed 10% of the nominal output voltage to ensure adequate operation of the protection circuitry.
References:
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