RP135-20-1-QD

Overview

The Astrodyne TDI RP135-20-1-QD is a high-performance, single-output DC-DC converter designed for demanding industrial and commercial applications. It delivers a regulated output voltage of 20V at up to 6.75A, providing a total power capacity of 135W. The unit features an input voltage range of 36V to 75V DC, ensuring compatibility with standard 48V nominal systems. Key electrical specifications include a typical efficiency of 90% and a ripple and noise level of less than 150mV peak-to-peak. The device incorporates comprehensive protection mechanisms such as over-voltage, over-current, and short-circuit protection, alongside remote on/off control capabilities.

Feature Summary

• High efficiency conversion design reduces thermal load in enclosed environments
• Integrated comprehensive protection circuits ensure robust operation under fault conditions
• Compact metal housing facilitates effective heat dissipation and mechanical durability
• Remote enable functionality allows for system-level power management integration

Applications

• Industrial automation control systems requiring stable 20V power rails
• Telecommunications infrastructure equipment operating on 48V DC bus architectures
• Medical imaging devices needing low-noise, regulated DC power supplies
• Test and measurement instrumentation requiring precise voltage regulation

Procurement Notes

Verify the specific suffix codes against the manufacturer's current datasheet to confirm pinout configuration and mounting style. Ensure the input voltage range matches your system's DC bus characteristics before procurement. Confirm that the thermal requirements of your enclosure align with the converter's derating curves. Check for any recent revisions to the RoHS compliance status or packaging specifications directly from authorized distributors.

Selection Notes

Select this model when a fixed 20V output is required within a 36-75V input window. Consider the physical dimensions and mounting hole pattern to ensure compatibility with existing chassis designs. Evaluate the thermal environment to determine if additional heatsinking or airflow is necessary beyond the unit's natural convection capabilities. Compare the ripple and noise specifications against sensitive downstream components to verify signal integrity requirements are met.

Part Context

This component belongs to the RP135 series of non-isolated DC-DC converters manufactured by Astrodyne TDI. The series is engineered for high reliability in space-constrained applications. The 'QD' suffix typically denotes specific regulatory approvals or terminal configurations distinct from standard variants. Understanding the broader family helps in identifying compatible accessories or similar models with adjusted voltage outputs.

Replacement Considerations

Direct replacements must match the 135W power rating, 20V output, and 36-75V input range. Verify pin-for-pin compatibility to avoid rewiring. Check if alternative manufacturers offer equivalent footprint and thermal performance. Ensure that protection thresholds and remote control logic levels are compatible with the existing system design.