Smart OR-ing boost converter reference design for automotive eCall
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This reference design is a smart OR-ing boost converter for automotive emergency call (eCall) applications utilizing a low quiescent current boost controller. The design uses two boost power stages driven by the same controller. The main battery input includes a bypass switch function. The backup battery input has a separate enable with disconnect switches. This combination allows for seamless crossover from the main battery to the backup battery.

  • Dual boost power stages allows for single controller operation
  • 440 kHz switching frequency, which is below the AM band
  • Low input voltage for operation during cold crank
  • Bypass switch for main battery reduces losses
  • Automatic crossover to battery backup for glitch-free performance

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(Output Voltage 1)
Vin (Min) (V)3
Vin (Max) (V)30
Vout (Nom) (V)10.5
Iout (Max) (A)1.5
Output Power (W)15.75
Input TypeDC
TopologyBoost- Non Sync

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5150-Q1  Wide VIN Automotive Low IQ Boost Controller  Step-up (boost) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5150-Q1 Download

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User guide (1)
Title Type Size (KB) Date
PDF 2048 30 Jan 2019
Design files (6)
Title Type Size (KB) Date
ZIP 392 30 Jan 2019
ZIP 608 30 Jan 2019
PDF 586 30 Jan 2019
PDF 132 30 Jan 2019
PDF 96 30 Jan 2019
PDF 163 30 Jan 2019

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