Flex Power Modules Unveils Through Hole DC-DC Converter for RFPA and PoE Applications


Flex Power Modules has announced a through-hole DC-DC converter, the PKU4116HD series, with 36-60 V input (80 V peak) and fully-regulated 55 V output. The open-frame module is in the industry-standard 1/16th brick format, 33.02 x 22.86 x 9.8 mm, and is rated at 110 W / 2 A output to 50 °C ambient with natural convection, and to 85 °C with additional airflow. Excellent thermal performance also allows operation to 100 °C ambient with derating. Efficiency is high, typically 92.4 % at 48 Vin, full load and proven technology is used to provide high reliability at an attractive price-point.

The PKU4116HD features monotonic start-up into a pre-biased load, a remote-control function, and full protection against over-temperature, input under-voltage, output over-voltage and over-current. It has a standby power of 0.5 W, typically.

The device has an input/output isolation of 2250 VDC and is compliant with IEC/EN/UL 62368-1. With the 55 V output, it becomes particularly suitable for Power-over-Ethernet (PoE) applications as well as a supply for RF power amplifiers in microwave radio systems and small cells. EN 55022/32, CISPR 22 and FCC part 15J conducted EMC levels can be met with a simple external filter network.

The PKU4116HD is suitable for pin-in-paste reflow processes for convenient automated assembly. “This new sixteenth-brick DC-DC is a great addition to our range with its highly competitive price point. It’s ideal for price-sensitive PoE and cell base station applications,” says David Xie, Director of R&D and Product Management at Flex Power Modules.

Key Features of the PKU4116HD series

  • 110 W output in a 1/16th brick format
  • 2250 V isolation rating
  • Low-cost proven technology
  • RF power amplifier and Power-over-Ethernet applications

The PKU4116HD series has undergone comprehensive qualification, along with highly automated manufacturing, for reliable operation. Flex Power Modules’ products have ISO 9001/14001 certification.

Click here to learn more about the PKU4116HD DC-DC converters.

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