PMP15023 Reference Design

Texas Instruments

Automotive wide-VIN to point-of-load power supply with front-end circuit protection reference design

Description

This automotive point-of-load power supply reference design features complete front-end protection in a small overall solution size. The system can clamp fast high-voltage electrical transients and maintain operation through these events. It can also properly respond to a reverse battery polarity event and shut down appropriately. This three-output design employs sequencing of two buck regulators to ensure proper power-on and power-down timing: and features an input pi filter to reduce conducted EMI. The design accepts an input voltage of 5 V to 36 V and provides outputs of 3.3 V: 1.2 V: and 1.8 V. This supply is capable of supplying 2 A on the 1.8 V and 1.2-V outputs: while the 3.3-V output simultaneously supplies 3.55 A.

Features
  • Complete wide Vin front-end automotive power supplyOff-battery operation with reverse battery protection Positive and negative transient voltage protectionAuto-sequencing of all three power railsReduced EMI with included pi filter
Applications
  • Fitness machine
  • Eye
  • ear
  • nose & throat exam
Product Categories
  • Power management