Product category:
Power supplies and plant cabling
News Release from: Calex Electronics | Subject: Load Share Series
Edited by the Processingtalk Editorial
Team on 20 March 2008
Load sharing module for DC/DC converters
Calex Electronics announces the Load Share Series of modules which provide a unique "plug and play" solution for paralleling multiple DC/DC converters
For those who have attempted to parallel DC/DC converters, it is not a simple task Simply running the output traces in parallel on your PCB generally will result in one DC/DC converter attempting to supply the majority of the output current thus resulting in an overload condition
This article was originally published on Processingtalk on 31 Aug 2004 at 8.00am (UK)
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Due to component tolerances and production variances, the start-up profiles for the same model DC/DC converter may vary.
If one converter starts into a full load condition in a parallel circuit prior to the other DC/DC converter module(s) this may result in an over-current condition resulting in system failure.
Calex is the first to offer a truly modular solution significantly simplifying the task of paralleling DC/DC converters for increased current capability and/or power system redundant load sharing.
No external circuitry is required with any of the the Calex Load Share models.
There are six models in the Series covering 3.3 to 48 Volt nominal input voltages.
Maximum output current is 60A.
All models achieve 99% efficiency typically and utilise aluminium substrate technology for thermal management.
The Load Share Series utilises "active load sharing" with low-side sensing resulting in very accurate load sharing with minimal load regulation issues.
The low-side sensing in combination with the differential load share bus communication technology designed into the Load Share module results in a very high level of noise immunity.
The Load Share modules also utilise the sense point as the point of regulation which gives the designer the ability to use the DC/DC converter trim function in the system design.
The Load Share models are housed in a 1/4 brick package measuring 2.28in x 1.45in x 0.50in H.
The baseplate operating temperature is -40 to 100C.
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