Product category:
DC/DC Convertors
News Release from: Calex Electronics | Subject: Load Share Series
Edited by the Electronicstalk Editorial
Team on 20 March 2008
DC/DC convertors are made for sharing
Modular solution simplifies the task of paralleling DC/DC convertors for increased current capability and/or power system redundant load sharing.
New from Calex, the Load Share Series of modules provide a novel "plug and play" solution for paralleling multiple DC/DC convertors Anyone who has attempted to parallel DC/DC convertors will know it is not a simple task
This article was originally published on Electronicstalk on 3 Oct 2006 at 8.00am (UK)
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Simply running the output traces in parallel on the PCB will generally result in one DC/DC convertor attempting to supply the majority of the output current, resulting in an overload condition.
Thanks to component tolerances and production variances, the startup profiles for the same model DC/DC convertor may vary.
If one convertor starts into a full load condition in a parallel circuit prior to the other DC/DC module(s) this may result in an overcurrent condition resulting in system failure.
Calex is the first to offer a truly modular solution significantly simplifying the task of paralleling DC/DC convertors for increased current capability and/or power system redundant load sharing.
No external circuitry is required with any of the Calex Load Share models.
There are six models in the series covering 3.3 to 48V 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 uses "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 use the sense point as the point of regulation which gives the designer the ability to use the DC/DC convertor trim function in the system design.
The Load Share models are housed in a quarter-brick package measuring 58 x 37 x 13mm.
The baseplate operating temperature is -40 to +100C.
Lead time for the Load Share modules is 6-8 weeks ARO.
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