Elmos, Germany, has announced a number of application solutions for automotive lights. In order to facilitate the user to quickly select the right semiconductor device, Elmos also provides a sub-site for searching for LED constant current driver related applications, such as low beam, daytime running lights, ambient lights, tail lights and rear fog lights.
A wide range of applications with outstanding performance
Based on the E522.3x family of chips, Elmos has developed a family of automotive LED constant current drivers. The DC/DC driver can operate in boost or buck-boost mode with an operating voltage range of 5V to 55V and withstands output voltages up to 80V. Depending on the load of the LED, a single channel (E522.31/33) or a dual channel (E522.32/34) DCDC solution can be selected.
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Dipped beam scheme
The elmos LED controller family E522.3x offers a variety of topologies, such as boost vs. GND, boost vs. battery (positive), SEPIC topology or buck vs. battery. The switching frequency of the switching power supply can be adjusted from 225kHz to 600kHz by synchronizing with other devices through an external resistor or master-slave configuration. The IC's operating voltage range is 5V to 55V, withstands output voltages up to 80V, depending on the actual needs, in single or dual channel mode. This solution can be applied to low beam, high beam, fog light, daytime running lights and rear view mirror turn signals.
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High beam application
High reliability
Operating in the ambient temperature range of -40 ° C to +150 ° C, Elmos' DC / DC solution is particularly suitable for use in harsh environments such as gasoline and electronics.
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Designed for next-generation lighting
Flexible topology
In addition to high reliability, the device offers a variety of circuit topologies such as boost, SEPIC, buck-boost and buck topologies. The switching frequency can be adjusted from 250kHz to 600kHz by an external resistor setting or in a master-slave mode configuration to synchronize with other devices. The power consumption in sleep mode is only 8μA.
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