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Layout Guidelines for the MAX16974/MAX16975/MAX16976 DC-DC Converters

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Description

Introduction

The MAX16974/MAX16975/MAX16976 DC-DC converters are standard buck controllers designed for automotive applications. These controllers feature an integrated high-side N-channel FET and an external free-wheeling diode. Proper PCB layout of the IC, along with all the external components, is critical for reliable operation and for minimizing EMI emissions. This application note highlights some of the key points of the circuits for optimizing the layout. Figure 1 shows the typical application circuit of these high-performance converters.

Typical Applications Schematic

Figure 1. Typical application circuit.
Figure 1. Typical application circuit.

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Designed, Built, Tested

Board pictured here has been fully assembled and tested. Not available for sale.

 

Maxim Devices (4)

Part Number Name Product Family Order Design kits and evaluation modules
MAX16974EVKIT Evaluation Kit for the MAX16974 Switching Regulator - Switching Regulators Buy Now Not Available
MAX16974 High-Voltage, 2.2MHz, 2A Automotive Step-Down Converter with Low Operating Current Switching Regulator - Switching Regulators Buy Now Design Kits
MAX16976 28V, 600mA Automotive Step-Down Converter with Low Operating Current Switching Regulator - Switching Regulators Buy Now Not Available
MAX16975 28V, 1.2A Automotive Step-Down Converter with Low Operating Current Switching Regulator - Switching Regulators Buy Now Not Available

Maxim Devices (4)

Part Number Product Family
Switching Regulator - Switching Regulators
Evaluation Kit for the MAX16974
Not Available
Switching Regulator - Switching Regulators
High-Voltage, 2.2MHz, 2A Automotive Step-Down Converter with Low Operating Current
Switching Regulator - Switching Regulators
28V, 600mA Automotive Step-Down Converter with Low Operating Current
Not Available
Switching Regulator - Switching Regulators
28V, 1.2A Automotive Step-Down Converter with Low Operating Current
Not Available

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