STMicroelectronics A6986I automotive 38 V, 5W Iso-Buck converter

STMicroelectronics A6986I automotive 38 V, 5W Iso-Buck converter

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The A6986I is an automotive-grade device specifically designed for the isolated buck topology

The A6986I is an automotive-grade device specifically designed for the isolated buck topology. The 100% duty cycle capability and the wide input voltage range meet the cold crank and load dump specifications for automotive systems. The primary output voltage can be accurately adjusted, whereas the isolated secondary output is derived by using a given transformer ratio. No optocoupler is required. The primary sink capability typically up to 1.9 A (even during soft-start) allows a proper energy transfer to the secondary side as well as enabling a tracked soft-start of the secondary output.

Key features

  • AEC-Q100 qualified
  • 4 V to 38 V operating input voltage
  • Operating temperature range: – 40°C to + 135°C for TJ
  • 8 µA IQ-SHTDWN

Additional features

  • AEC-Q100 qualified
  • Operating temperature range:
    • Tj from -40 °C to 135 °C
  • Designed for iso-buck topology
  • 4 V to 38 V operating input voltage
  • Primary output voltage regulation / no optocoupler required
  • 1.9 A typical sink peak primary current capability
  • Peak current-mode architecture in forced PWM operation
  • 300 ns blanking time
  • 8 µA IQ-SHTDWN
  • Adjustable fSW and synchronization
  • Embedded primary output voltage supervisor
  • Adjustable soft-start time
  • Internal primary current limiting
  • Overvoltage protection
  • RDS(ON) HS = 180 mΩ, RDS(ON) LS = 150 mΩ
  • Thermal shutdown

more information: https://www.st.com/en/power-management/a6986.html

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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