Texas Instruments Evaluation Board for the LM10010 LM10010EVM/NOPB LM10010EVM/NOPB Scheda Tecnica
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LM10010EVM/NOPB
User's Guide
SNVA498B – July 2011 – Revised May 2013
AN-2176 LM10010 Evaluation Board
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LM10010 Overview
The LM10010 is a precision, digitally programmable device used to control the output voltage of a DC/DC
converter. The LM10010 outputs a DC current inversely proportional to a 6-bit input word. This current
DAC output connects to the feedback pin of a buck converter in order to adjust its output voltage to a
desired range and resolution set by the user. As the 6-bit word counts up, the output voltage is adjusted
higher based on the setting of the feedback resistors in the buck converter.
converter. The LM10010 outputs a DC current inversely proportional to a 6-bit input word. This current
DAC output connects to the feedback pin of a buck converter in order to adjust its output voltage to a
desired range and resolution set by the user. As the 6-bit word counts up, the output voltage is adjusted
higher based on the setting of the feedback resistors in the buck converter.
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Introduction
This evaluation module provides a VID interface to test the LM10010 and its control of an LM21215A-1
buck regulator. The LM21215A-1 is capable of driving up to 15A of continuous load current with excellent
output voltage accuracy due to its ±1% internal reference and high gain error amplifier. This device also
features a clock synchronization input that allows the switching frequency to be synchronized to an
external clock source. In this evaluation board, the LM10010 is used to control and adjust the output
voltage through its 4-pin VID interface. The input voltage can be operated from 2.97V to 5.5V. On power-
up, the output voltage defaults to 1.0V. The evaluation board allows for control of the LM21215A-1 output
voltage from 0.7V to 1.1V in 6.4mV steps. The evaluation board also includes a 10-pin header used for
communication with the LM10010. A communications dongle is provided along with software to control the
output voltage through a graphical user interface (GUI) and an USB port. This application note describes
the various functions of the board, how to test and evaluate it, and how to use the GUI design tool to
change the components for a specific application. Please check LM10010 VID Voltage Programmer for
Point of Load Regulator(
buck regulator. The LM21215A-1 is capable of driving up to 15A of continuous load current with excellent
output voltage accuracy due to its ±1% internal reference and high gain error amplifier. This device also
features a clock synchronization input that allows the switching frequency to be synchronized to an
external clock source. In this evaluation board, the LM10010 is used to control and adjust the output
voltage through its 4-pin VID interface. The input voltage can be operated from 2.97V to 5.5V. On power-
up, the output voltage defaults to 1.0V. The evaluation board allows for control of the LM21215A-1 output
voltage from 0.7V to 1.1V in 6.4mV steps. The evaluation board also includes a 10-pin header used for
communication with the LM10010. A communications dongle is provided along with software to control the
output voltage through a graphical user interface (GUI) and an USB port. This application note describes
the various functions of the board, how to test and evaluate it, and how to use the GUI design tool to
change the components for a specific application. Please check LM10010 VID Voltage Programmer for
Point of Load Regulator(
) data sheet for the latest software and data sheet information. For
more information on the LM21215A-1 and its operation, please consult the LM21215A-1 15A High
Efficiency Synchronous Buck Regulator with Frequency Synchronization (
Efficiency Synchronous Buck Regulator with Frequency Synchronization (
) data sheet and the
AN-2131 LM21215A-1 Evaluation Board (
) evaluation board application note.
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PCB Features
•
Input voltage range: 3.0V to 5.5V
•
Programmable output voltage: 0.7V to 1.1V
•
Over current protection: 17A
•
PCB Size: 2.1” x 2.1”
•
Solution Size: 1.0” x 1.0”
•
USB connection through communications dongle
•
Software control with graphical user interface
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SNVA498B – July 2011 – Revised May 2013
AN-2176 LM10010 Evaluation Board
Copyright © 2011–2013, Texas Instruments Incorporated