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Virtual Engine Sound System (VESS)

Описание:
Reverse polarity is standard protection required in an automotive environment. When battery cables are detached and reconnected there is a probability of connecting the wires to wrong terminals of the battery. This mistake could damage the components in Electronic Control Units (ECU). To avoid damage to the ECU there is a need for reverse polarity protection. Schotky diodes could be used but will have a constantly high power loss. This reference design uses the LM5050-Q1 along with n-channel mosfet to provide reverse polarity protection and reduce the power dissipation.
Возможности:

Reverse polarity protection for 12V/24V/48V Oring controller to connect multiple batteries Improves system efficiency and very low quiescent current Replaces the Schottky diode and reduces the power dissipation ISO7637-2 and ISO16750-2 compliant

Документация:
  • Схемотехника
  • BOM
Описание:
Automotive battery power supply lines are prone to transients while running the system. Typical protections required are overvoltage, overload, reverse polarity, and jump start. During the life of a car, the alternator may be replaced with a non-OEM part. The after-market alternator may have different or no load dump protection, which could lead to damaging the electronic control unit (ECU). This TI Design provides protection to handle these potential unsuppressed load dump pulses (12 V and 24 V) with hardware control. Class A operation may be attained during unsuppressed load dump pulses.
Возможности:

Wide input protection voltage range Scalable to multiple battery topologies (12V, 24V, 48V) Configurable options to support Class A operation during unsuppressed load dump pulses Compliance to ISO7637-2, ISO16750-2

Документация:
  • Схемотехника
  • BOM
  • Топология платы

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