The PKJ 4000 PI 37.5-150W DC/DC Power Modules are third-generation high-density DC/DC power modules with features such as high efficiency, standard footprint, and wide input voltage range. They utilize proprietary drive and control circuits, planar magnetics, low resistivity multilayer PCB technology, and a patent-pending topology with active rectification. The PKJ series can be used without bulky and height-consuming heatsinks, resulting in a lower total cost. They also offer the flexibility of using a heatsink when needed, enabling reduced airflow, extended reliability, or higher ambient temperature operation in a wide range of 48V and 60V DC powered systems.
The Ericsson PKJ 4000 PI series represents a third generation of high-density DC/DC power modules designed for A48V input systems. These modules offer up to 91.5% efficiency and utilize proprietary drive circuits with planar magnetics, allowing operation without bulky heatsinks in many applications.
The datasheet provides absolute maximum ratings, electrical characteristics, environmental specifications, mechanical data, and thermal design information. It covers specific models within the series including the PKJ 4719 PI (75W), PKJ 4519 PI (50W), and others in the A48V input range.
| Maximum Operating Case Temperature | -40 to +100 °C |
|---|---|
| Isolation Voltage | 1,500 Vdc |
| Input Voltage Range | 36 to 72 Vdc |
| Maximum Output Current (PKJ 4719 PI) | 30 A |
| Maximum Output Power (PKJ 4719 PI) | 75 W |
It is recommended that the PKJ series DC/DC power modules are operated at case temperatures below 90°C.
A fast blow fuse with a rating of 10A or less is recommended, using the lowest current rating suitable for the application.