DC/DC converters target connected-vehicle applications

DC/DC converters target connected-vehicle applications

New Products |
By Graham Prophet

Based on a highly integrated components platform and low-profile planar magnetics, Powerbox’s ENA100 (100W) and ENA200 (200W) are packaged in a plastic enclosure, which is IP21-compliant; the boards are conformal coated to withstand high humidity, complying with the challenging environments found in the automotive industry.


To guarantee the highest levels of efficiency and reliability, the ENA100 and ENA 200 power stage uses specific components selected for robustness and high-reliability data and operated within a safe-band area. The series comes with galvanic isolation of 500 VDC and built-in protections and filtering, making products ready to use without additional components.

The automotive industry comprises of a large segment of varying applic


As members of the Powerbox Automotive Line, the ENA100 and ENA200 units have been designed in response to the automotive electronics equipment manufacturer’s demand for standardised DC/DC converters built-in low profile packaging, lower than 20 mm (0.8 in.), isolated cases with an IP-class of 21, galvanic isolation, low conducted and radiated EMI and sustaining 2 kV surges along with a requirement for simple installation and the ability to upgrade when more power is required, if new equipment is added. The company comments that emergency vehicles and new long-range bus fleets are requiring very flexible and reliable power sources to supply local voltages to demanding applications such as radio localisation and on-board video systems.


Packaged in a 116 x 88 x 18 mm (4.57 x 3.46 x 0.70 inches) polycarbonate housing, the ENA100 and ENA200 baseplate includes four mounting holes for mechanical attachment to a vehicle chassis or assembly plate. The low weight, less than 500 grams, contributes to passing vibration testing (5-50 Hz, acceleration ±7.35 m/sec² ). Input and outputs of the products are equipped with 6.3 mm industry standard connectors, along with an integrated LED, indicating the state of the output voltage.


The ENA100 and ENA200 series cover a range of applications requirements from 10 VDC input up to 120 VDC (10V to 18V – 18V to 32V – 36V to 75V and 55V to 120V). Four output voltages, 12.5V, 14.5V, 24.5V and 28V will be available and, depending on the output voltage, in a range of output currents of 8A to 16A. The ENA100 and ENA200 have efficiencies of up to 96%, and incorporate efficient input filtering, short circuit protection with constant current limit set at ~110%, temperature protection with automatic recovery and intelligent power control, guaranteeing safe-gap operation. Designed for conduction cooling, the ENA100 and ENA200 series can be operated from -20°C to +50°C ambient and up to 70°C baseplate.


Meeting road vehicle EMC and transient protection the ENA100 and ENA200 series comply with the standards EN61000-6-2 ; 4-2/3/4/5/6 and EMI EN55022B conducted and radiated. The ENA100 and ENA200 also comply with ISO7637-2 and EN12895:2000 immunity. Future addtions will include 400W models, non-isolated step-down converters and battery chargers. T





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