Table of Contents
Advertisement
Quick Links
www.ti.com
User's Guide
LM3000 Buck Controller Evaluation Module User's Guide
1
Introduction.............................................................................................................................................................................2
2 Powering and Loading Considerations................................................................................................................................
2.1 Quick Setup Procedure......................................................................................................................................................
Configuration...............................................................................................................................................................4
3.1 External Clock Synchronization.........................................................................................................................................
3.2
CLKOUT.............................................................................................................................................................................4
3.3
Tracking..............................................................................................................................................................................4
3.4 Output Voltage Ripple........................................................................................................................................................
4 Typical Performance Waveforms..........................................................................................................................................
5 Evaluation Board Schematic.................................................................................................................................................
6 Bill of Materials.......................................................................................................................................................................
Layout............................................................................................................................................................................10
8 Revision History...................................................................................................................................................................
Figure 2-1. Basic Test Setup for LM3000EVAL Board.................................................................................................................
Figure 3-1. Synchronization at 3.3-V Output...............................................................................................................................
Figure 3-2. Tracking with an External Ramp for 3.3-V Output.....................................................................................................
Figure 3-3. Output Voltage Ripple Measurement Setup..............................................................................................................
Figure 4-3. Output Ripple Voltage for 3.3-V Output at 8-A Load.................................................................................................
Figure 4-4. Output Ripple Voltage for 1.2-V Output at 15-A Load...............................................................................................
Figure 4-5. Output Load Transient from 0 A to 6 A for 3.3-V Output...........................................................................................
Figure 4-6. Output Load Transient from 0 A to 10 A for 1.2-V Output.........................................................................................
Figure 5-1. Evaluation Board Full Schematic..............................................................................................................................
Figure 7-2. Top Layer as Viewed from Top................................................................................................................................
Figure 7-3. Bottom Overlay as Viewed from Top.......................................................................................................................
Figure 7-5. Internal Layer 1 as Viewed from Top.......................................................................................................................
Figure 7-6. Internal Layer 2 as Viewed from Top.......................................................................................................................
Materials............................................................................................................................................................8
Trademarks
All trademarks are the property of their respective owners.
SNVA389B - JULY 2009 - REVISED FEBRUARY 2022
Submit Document Feedback
Table of Contents
List of Figures
kHz........................................................................................................................6
kHz........................................................................................................................6
Top.............................................................................................................................10
Top...........................................................................................................................11
List of Tables
Copyright © 2022 Texas Instruments Incorporated
LM3000 Buck Controller Evaluation Module User's Guide
Table of Contents
3
3
4
5
6
7
8
13
3
4
5
5
6
6
6
6
7
10
11
12
12
1
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Texas Instruments LM3000
Summary of Contents for Texas Instruments LM3000
-
Page 1: Table Of Contents
Table of Contents User’s Guide LM3000 Buck Controller Evaluation Module User's Guide Table of Contents Introduction.....................................2 2 Powering and Loading Considerations..........................2.1 Quick Setup Procedure..............................3 Board Configuration................................4 3.1 External Clock Synchronization............................CLKOUT.....................................4 Tracking....................................4 3.4 Output Voltage Ripple................................ 4 Typical Performance Waveforms............................ -
Page 2: Introduction
1 Introduction The LM3000 evaluation board is designed to provide the design engineer with a fully functional power converter- based solution using the LM3000 dual output emulated current mode controller. This evaluation board provides two output voltages of 3.3 V and 1.2 V. The 3.3-V output is designed to handle a maximum current of 8 A, whereas the 1.2-V output has a maximum current capability of 15 A. -
Page 3: Powering And Loading Considerations
3.3 V on VO1 and 1.2 V on VO2. Figure 2-1. Basic Test Setup for LM3000EVAL Board SNVA389B – JULY 2009 – REVISED FEBRUARY 2022 LM3000 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 4: Board Configuration
LM3000. 3.3 Tracking The LM3000 evaluation board is configured such that VOUT2 tracks VOUT1, while VOUT1 voltage increases with a rate determined by the value of C17, the soft-start capacitor for VOUT1 (Condition 1). This configuration will not allow VOUT2 to be turned on independently without turning on VOUT1. -
Page 5: Output Voltage Ripple
Figure 3-3 shows a diagram of this measurement technique. Figure 3-3. Output Voltage Ripple Measurement Setup SNVA389B – JULY 2009 – REVISED FEBRUARY 2022 LM3000 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 6: Typical Performance Waveforms
Figure 4-6. Output Load Transient from 0 A to 10 A for 3.3-V Output for 1.2-V Output LM3000 Buck Controller Evaluation Module User's Guide SNVA389B – JULY 2009 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 7: Evaluation Board Schematic
Evaluation Board Schematic 5 Evaluation Board Schematic Figure 5-1. Evaluation Board Full Schematic SNVA389B – JULY 2009 – REVISED FEBRUARY 2022 LM3000 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 8: Bill Of Materials
100 kΩ, 1% Vishay CRCW060342k2FKEA Resistor 0603 42.2 kΩ, 1% Vishay CRCW060335k7FKEA Resistor 0603 35.7 kΩ, 1% Vishay LM3000 Buck Controller Evaluation Module User's Guide SNVA389B – JULY 2009 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... - Page 9 Turret Terminal Keystone diameter EN2, GND, EN1, 0.072" TRK1, 1573-2 Turret Terminal Keystone diameter PGOOD1, SYNC SNVA389B – JULY 2009 – REVISED FEBRUARY 2022 LM3000 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
-
Page 10: Pcb Layout
7 PCB Layout Figure 7-1. Top Overlay as Viewed from Top Figure 7-2. Top Layer as Viewed from Top LM3000 Buck Controller Evaluation Module User's Guide SNVA389B – JULY 2009 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 11: Figure 7-3. Bottom Overlay As Viewed From Top
Figure 7-3. Bottom Overlay as Viewed from Top Figure 7-4. Bottom Layer as Viewed from Top SNVA389B – JULY 2009 – REVISED FEBRUARY 2022 LM3000 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 12: Figure 7-5. Internal Layer 1 As Viewed From Top
Figure 7-5. Internal Layer 1 as Viewed from Top Figure 7-6. Internal Layer 2 as Viewed from Top LM3000 Buck Controller Evaluation Module User's Guide SNVA389B – JULY 2009 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 13: Revision History
Updated the numbering format for tables, figures, and cross-references throughout the document....2 • Updated the user's guide title..........................SNVA389B – JULY 2009 – REVISED FEBRUARY 2022 LM3000 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... - Page 14 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
- Page 15 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
- Page 16 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
- Page 17 www.ti.com EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
- Page 18 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2019, Texas Instruments Incorporated...
- Page 19 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2022, Texas Instruments Incorporated...
Need help?
Do you have a question about the LM3000 and is the answer not in the manual?
Questions and answers