Evaluation Board iC-GE

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Product Information

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iC-GE and iC-GE100 are PWM drivers for inductive loads, such as relays, valves and other inductive actuators.

The setpoints for the coil's energizing and hold current are preset by means of external resistors RACT and RHOLD. These currents can be set in a range from 100 mA to 1 A (iC-GE) resp.

The drivers intrinsically switch from energizing to hold mode after 50 ms, provided that the energizing current has been reached. A capacitor at TACT prolongs the time before the switching to hold mode occurs (iC-GE only).

The changeover between energizing and hold modes is suitable for typical relays, requiring a powerful initial energizing current, which can then be reduced after closing the air gap in the magnetic circuit. The quadratic dependence on the current means that reducing the current by e.g. 30% reduces the power dissipation by more than 50%.


• PWM driver for inductive loads (e.g. 6/12 V relays, actuators, electrovalves) from 24 V

Symmetry Electronics (and its e-commerce division: SemiconductorStore.com) is an authorized iC-Haus distributor.


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Current control for inductive actuators at 24 V (10 to 36 V)
High efficient current control up to 1 A (iC-GE100: 100 mA max.)
Power saving and power dissipation reduced switching
Individual setting of energizing and hold current
Energizing time of 50 ms prolongable with external capacitor (iC-GE only)
Monitoring of coil current, supply voltage and chip temperature
Status indication via LED or logic output
Contact preserving zero load switching of relays
Shutdown with overtemperature and undervoltage
Fast demagnetising due to 15 V countervoltage
High PWM frequency with spreading for low EMI

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