Product category:
Electrical systems
News Release from: Calex Electronics | Subject: Load Share Series of modules
Edited by the Manufacturingtalk Editorial
Team on 20 March 2008
Load sharing module made for DC/DC
converters
A novel 'plug and play' module significantly simplifies the task of paralleling DC/DC converters for increased current capability and/or power system redundant load sharing.
Calex Electronics said that its Load Share Series of modules provide a novel 'plug and play' solution for paralleling multiple DC/DC converters Calex said that those who had attempted to parallel DC/DC converters know it is not a simple task
This article was originally published on Manufacturingtalk on 23 Oct 2000 at 8.00am (UK)
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Simply running the output traces in parallel on a PCB generally will result in one DC/DC converter attempting to supply the majority of the output current, thus resulting in an overload condition.
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.
* Modular solution - Calex told manufacturingtalk that is the first to offer a truly modular solution.
It significantly simplifies 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 3.3V to 48V nominal input voltages.
Maximum output current is 60A.
All models achieve 99% efficiency typically and utilize aluminium substrate technology for thermal management.
* Active load sharing - the Load Share Series utilizes '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 utilize 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 0.50inH.
The baseplate operating temperature is -40 deg C to +100 deg C.
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