E522.32 and E522.34 are parts of a family of fixed frequency switch-mode high voltage LED power supplies and controllers with high efficiency. Integrated highside sensing allows topologies related to GND (Boost-to-GND or SEPIC) as well as related to input voltage (Boost-to-battery or Buck-to-battery, particularly in harsh automotive environments.
The switching frequency is adjustable up to 600kHz by an external resistor or can be synchronized in Master-Slave configurations with other devices. The phase shift of 180° between channels essentially reduces EMI. Devices are available as 2-channel with spread spectrum oscillators (E522.32) and as 2- channel without spread spectrum (E522.34) versions to optimize size and effort of the application. Multiple control- and monitoring functions, e.g. short- and open load detection, overtemperature shutdown and undervoltage lockout are implemented.
More Informations: automotive-led-driver.elmos.com/constant-current-led-controller.html
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