Automotive High Current, Wide VIN Synchronous Buck Controller Reference Design Featuring LM5140-Q1

(ACTIVE) PMP15032

Description & Features

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Key Document

Description

PMP15032 demonstrates the operation and performance of the LM5140-Q1 synchronous buck controller in a high current dual-phase application. The PMP15032 operates over the input voltage range of 5.5 to 42V. The EVM provides a 5.0V output with a maximum load current of 45A (22.5A per phase).  The LM5140-Q1 switching frequency is set to 440 kHz to minimize switching losses and obtain maximum efficiency.

Features
  • 5.5V to 42VIN, 5VOUT @ 45A, 22.5A per phase
  • 93.54% efficiency
  • Solution size: 2.5 inch x 3.8 inch maximum component height: 0.25 inch

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Bill of Materials (BOM)

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Parametrics
 PMP15032.1
(Output Voltage 1)
Vin (Min) (V)5.5
Vin (Max) (V)42
Vout (Nom) (V)5
Iout (Max) (A)45
Output Power (W)225
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Synchronous

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5140-Q1  Wide Vin Dual 2.2MHz low Iq Synchronous Buck Controller  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LMP7701  Precision, CMOS Input, RRIO, Wide Supply Range Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5140-Q1 Download Download
LMP7701 Download Download
Download Download

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Technical Documents

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User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1153 28 Jun 2017 2
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 585 28 Jun 2017 0
ZIP 1056 28 Jun 2017 0
PDF 1454 28 Jun 2017 0
PDF 186 28 Jun 2017 0
PDF 30 28 Jun 2017 2
PDF 233 28 Jun 2017 1 1

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