Introduction
2
SNVU621C – May 2019 – Revised December 2019
Copyright © 2019, Texas Instruments Incorporated
LM61460-Q1 EVM User's Guide
Contents
1
Introduction
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2
Quick Start
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3
Detailed Descriptions
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4
Schematic
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5
Board Layout
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6
LM61460EVM Board Test Results
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7
Bill of Materials
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Trademarks
Hotrod is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
1
Introduction
1.1
LM61460 Synchronous Step-Down Voltage Converter
The LM61460-Q1 device is an easy-to-use synchronous step-down DC/DC converter capable of driving
up to 6 A of load current from a supply voltage ranging from 3 V to 36 V. The LM61460-Q1 provides
exceptional efficiency and output accuracy in a very small solution size. The LM61460-Q1 is capable of
delivering 6 A of load current and is peak current limit controlled. The following are additional features that
provide both flexible and easy-to-use solutions for a wide range of applications:
•
Adjustable switching frequency
•
Synchronization to an external clock
•
FPWM variant (LM61460AFS)
•
Power-good flag
•
Precision enable
Automatic frequency foldback at light load and optional external bias improve efficiency over the entire
load range. The device requires few external components and has a pinout designed for optimal EMI and
thermal performance. Protection features include the following:
•
Thermal shutdown
•
Input undervoltage lockout
•
Cycle-by-cycle current limiting
•
Hiccup short-circuit protection
The LM61460-Q1 device is pin-to-pin compatible with the LM61440-Q1 for easy output current scaling.
For a quick reference,
shows the pin configuration of the LM61460-Q1 and
shows the
simplified schematic. See the
LM61460-Q1 Automotive 3-V to 36-V, 6-A, Low-Noise Synchronous Step-
for more detailed feature descriptions and design guide.