Elmos launches PFM-based DC/DC controllers
Elmos Semiconductor
DC/DC controllers
Elmos Semiconductor has introduced a range of DC/DC controllers based on PFM, which are suitable for applications with a wide input and output range.
Due to the PFM control mechanism, the ICs combine a feature of PWM converters, excellent efficiency at high loads, with low standby currents at low loads.
Using an automatic selection of switching frequency, this high efficiency is optimised over a range of the converter's output.
The controllers do not require a compensation network for the control loop, meaning the number of outside components and the overall complexity can be reduced.
At the same time, a high stability, even during changed loads, can be realised.
The basic version of this new range is the E910.26, which contains a wide area SMPS.
The E910.25 extends this functionality by a selectable switch off in case of overload and short circuit.
The highest level of integration and performance is provided by the E910.24.
This third option allows for an increased on time of the FET to get more power in case of low input voltages.
The range is aimed at applications such as automotive, LED driving, short circuit protected SMPS and security systems.
Due to an open topology low side driving, concepts such as step up, flyback and SEPIC can be realised.
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