Automotive High Current, Wide VIN Synchronous Buck Controller Reference Design Featuring LM5141-Q1
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Key Document


PMP15019 uses the LM5141-Q1 low Iq synchronous buck controller as the centerpiece of a high current automotive DC/DC power supply. The PMP15019 operates over the input voltage range of VOUT + 0.5V to 42V. The EVM provides a 5.0V output (default) with a maximum load current of 15A, 20A transient.  The device offers configurability and VOUT can be set to 3.3V and the oscillator frequency can be set up to switch at 440 kHz (default) or 2.2 MHz.

  • 5.5V to 42Vin, 5V @15A continuous, 20A peak
  • ~93.5% efficiency
  • Solution size: 2.0 inch x 3.0 inch (max component height: 0.4 inch)

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(Output Voltage 1)
Vin (Min) (V)5.5
Vin (Max) (V)42
Vout (Nom) (V)5
Iout (Max) (A)20
Output Power (W)100
Input TypeDC
TopologyBuck- Synchronous

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5141-Q1  Wide-Input 2.2MHz Low-Iq Synchronous Buck Controller  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

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Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
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User guides (1)
Title Type Size (KB) Date
PDF 1605 28 Feb 2017
Design files (6)
Title Type Size (KB) Date
ZIP 582 28 May 2019
ZIP 411 28 Feb 2017
PDF 1297 28 Feb 2017
PDF 218 28 Feb 2017
PDF 110 28 Feb 2017
PDF 346 28 Feb 2017

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