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Simplifying the Evaluation of AEC-Q100 Certified Voltage Regulators

August 24, 2017 by Paul Shepard

The L5150GJ-L5300AH7-L4995AK evaluation board from STMicroelectronics has been designed to facilitate the evaluation of certified (according to AEC-Q100) voltage regulators for automotive applications.

The board offers an effective solution for fast system prototyping and device evaluation. The EV-AUTO-LDOS comes ready-to-use with the required capacitors on the VCC power supply line. On-board minimum set of electrical components enables the user to directly connect the load and the power supply without any additional effort in external component design and connection.

The L5150GJ-L5300AH7-L4995AK is designed to provide stable 5V supply in automotive applications, BCM, Power Train, HVAC, Door Zone, Seat position, Electric park brake, Window lift, LED light control, Sun roof module, Gear box, and so on.

The board comes pre-assembled with L5150GJ, L5300AH7 and L4995AK voltage regulators designed to supply 5V automotive grounded loads, providing standard protections (such as Thermal shutdown and Short circuit).

Those ICs are housed in the following packages: HPAK for L5300AH7, PowerSSO-12 for L5150GJ and PowerSSO-24 for L4995AK.

The voltage regulators use a P-channel MOS transistor as a regulating element; with this structure a very low dropout voltage is obtained. The output voltage is regulated with a 2% precision.

The voltage regulator automatically adapts its own quiescent current to the output current level.

The board can be used in a unique solution or split in three stand-alone parts. Each part is completely independent from the electronic point of view and allows the performance evaluation of a single voltage regulator.

Key features include:

  • Simple detachable application board dedicated for L5150GJ, L5300AH7 and L4995AK
  • Provides electrical connectivity for easy prototyping
  • General Device features:
    • Power on reset
    • Low voltage reset
    • Enable
    • Early warning (only for L5150GJ)
  • Protections
    • Thermal shutdown
    • Short circuit