PREMA Semiconductor GmbH offers state-of-the-art solutions for analog and mixed-signal circuits. PREMA is an innovative company that develops new concepts for semiconductor technology and production.

The following list gives some examples of major ASIC developments.

Regulators - voltage transformers

• DC-DC and AC-DC converters in buck, boost, buck-boost or flyback configuration

• linear voltage regulators

• low standby-current power supplies

These circuit blocks are usually part of the ASIC, but sometimes developed as single-function ICs to realise specific requirements that are not covered by standard ICs.

LED / OLED driver - current controller

• • current-controlled output for modern lighting systems utilizing LEDs or OLEDs

  • different ranges of supply voltages

  • dimmable LED currents (digital or analog dimming)

  • integrated sensors or sensor interfaces for temperature, brightness, LED voltage, ...

  • applications range from decorative light over retrofit lamps to automotive lighting  

Amplifiers

• • amplification, filtering and gain control of audio signals

  • differential photocurrent transimpedance amplifiers

  • amplification used in light sensors, motion sensors, residual current circuit-breaker, smoke sensors, valve control in gas burners, microphones   

Sensors

Various sensors can be integrated into ASICs  

• light sensors (photodiodes) with varied spectral sensitivities
  (e.g. for the regulation of lighting systems)

• infrared data receivers, e.g. for IR remote controls

• motion detection by Hall sensors

• optical encoder IC for measuring rotation   

For other sensors (e.g. for pressure, thermal infrared, chemical substances) we can realise sensor amplifiers that serve an external sensor in the best way.

Control electronics

• • electronics the for evaluation of sensors

  • control electronic for mobile phones

  • house bus system transceiver (up to 50 V and 500 mA)

  • input/output circuit for bar-code readers

  • timer-controlled electronics