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Selective catalytic reduction (SCR) is a chemical process converting nitrogen oxides (NOx) into diatomic nitrogen and water as well as a small amount of carbon dioxide. This process is facilitated by the addition of automotive-grade urea – known as Diesel Exhaust Fluid (DEF) or commercial brands like AdBlue and Bluetech – to convert hazardous NOx emissions from diesel engines into harmless nitrogen and water.

The SCR block controls a pump that draws DEF from its tank and injects it, with an appropriate dosing valve, into the diesel exhaust gases. To optimize fuel efficiency, a gas sensor is located after the catalytic reduction process and its information is fed to the diesel engine ECU that combines this information with the engine status and give to the SCR unit accurate information regarding the right amount of DEF liquid to release.

We have a range of three-phase gate drivers and Power MOSFETs for the commonly used brushless DC (BLDC) motors, as well as SPC5 32-bit microcontrollers and dedicated power management ICs with voltage regulators and CAN and LIN Interface ICs to simplify the design of high-efficiency solutions.

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Technical Documentation

    • Description Version Size Action
      AN604
      Calculation of conduction losses in a power rectifier
      3.2
      137.74 KB
      PDF
      AN4021
      Calculation of reverse losses in a power diode
      1.0
      120.47 KB
      PDF
      AN4381
      Current sharing in parallel diodes
      1.0
      449.12 KB
      PDF
      AN1453
      NEW FAMILY OF 150V POWER SCHOTTKY
      1.1
      131.48 KB
      PDF
      AN5046
      Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages
      4.0
      4.82 MB
      PDF
      AN5088
      Rectifiers thermal management, handling and mounting recommendations
      2.0
      2.32 MB
      PDF
      AN533
      SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting
      3.6
      217.19 KB
      PDF
      AN443
      SERIES OPERATION ON FAST RECTIFIERS
      2.1
      202.48 KB
      PDF
      AN869
      Tj max limit of Schottky diodes
      2.2
      60.9 KB
      PDF
      AN604

      Calculation of conduction losses in a power rectifier

      AN4021

      Calculation of reverse losses in a power diode

      AN4381

      Current sharing in parallel diodes

      AN1453

      NEW FAMILY OF 150V POWER SCHOTTKY

      AN5046

      Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages

      AN5088

      Rectifiers thermal management, handling and mounting recommendations

      AN533

      SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting

      AN443

      SERIES OPERATION ON FAST RECTIFIERS

      AN869

      Tj max limit of Schottky diodes

Presentations & Training Material

    • Description Version Size Action
      ST Analog Products for Automotive applications 11.2017
      2.05 MB
      PDF

      ST Analog Products for Automotive applications

Publications and Collaterals

    • Description Version Size Action
      Automotive powertrain and safety ICs 1.0
      838.51 KB
      PDF

      Automotive powertrain and safety ICs

    • Description Version Size Action
      STMicroelectronics enables electronic control of the next generation of Gasoline Direct Injection (GDI) engines. 1.0
      822.68 KB
      PDF

      STMicroelectronics enables electronic control of the next generation of Gasoline Direct Injection (GDI) engines.

eDesignSuite

Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.

Diodes (Power Schottky & FERD) Smart Selector

TVS Smart Selector