Table of Contents
Advertisement
Quick Links
The Texas Instruments LMR33640EVM evaluation module (EVM) helps designers evaluate the operation
and performance of the LMR33640 buck regulator. The LMR33640 is an easy-to-use synchronous step-
down DC/DC converters capable of driving up to 4 A of load current from an input voltage of 3.8 V to 36 V.
The LMR33640EVM features a selectable output voltage of 3.3 V or 5 V and a switching frequency of
either 400 kHz. See the
Sheet
for additional features, detailed description, and available options.
Table 1
shows the EVM configuration.
LMR33640EVM
SNVU664 – November 2019
Submit Documentation Feedback
LMR33640 SIMPLE SWITCHER 3.8-V to 36-V, 4-A Step-Down Converter Data
Table 1. Device and Package Configurations
EVM
LMR33640ADDA
Figure 1. EVM Board Image
Copyright © 2019, Texas Instruments Incorporated
LMR33640EVM User's Guide
DEVICE
FREQUENCY/OUTPUT
User's Guide
SNVU664 – November 2019
CURRENT
400 kHz / 4 A
LMR33640EVM User's Guide
1
Advertisement
Table of Contents
Related Manuals for Texas Instruments LMR33640EVM
Summary of Contents for Texas Instruments LMR33640EVM
-
Page 1: Evm Board Image
DC/DC converters capable of driving up to 4 A of load current from an input voltage of 3.8 V to 36 V. The LMR33640EVM features a selectable output voltage of 3.3 V or 5 V and a switching frequency of either 400 kHz. -
Page 2: Table Of Contents
EVM Bottom Copper Layer List of Tables ..................Device and Package Configurations ....................BOM for LMR33640EVM Trademarks All trademarks are the property of their respective owners. LMR33640EVM User's Guide SNVU664 – November 2019 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated... -
Page 3: Setup
This section describes the test points and connectors on the EVM and how to properly connect, set up, and use the LMR33640EVM. Either the banana jacks and test points on the top of the board or the card edge connector can be used for connections. See... -
Page 4: Evm Card Edge Connections
VIN - Input supply to EVM. Connect to a suitable input supply. See the LMR33640 SIMPLE SWITCHER 3.8-V to 36-V, 4-A Step-Down Converter Data Sheet for input supply requirements. • GND - System power ground LMR33640EVM User's Guide SNVU664 – November 2019 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated... -
Page 5: Operation
PGOOD function, remove the 20-kΩ resistor and pull the PGOOD test point up to the desired voltage through an appropriate resistance. See the LMR33640 SIMPLE SWITCHER 3.8-V to 36-V, 4-A Step- Down Converter Data Sheet for more details. SNVU664 – November 2019 LMR33640EVM User's Guide Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated... -
Page 6: Performance Curves
= 12 V, VOUT = 5 V, ƒ = 400 KHz Figure 7. Efficiency: V = 12 V, VOUT = 3.3V, ƒ = 400 kHz LMR33640EVM User's Guide SNVU664 – November 2019 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated... -
Page 7: Schematic
Schematic www.ti.com Schematic Figure 8. LMR33640EVM Schematic SNVU664 – November 2019 LMR33640EVM User's Guide Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated... -
Page 8: Board Layout
Board Layout www.ti.com Board Layout Figure 9. Top View of EVM Figure 10. EVM Top Copper Layer LMR33640EVM User's Guide SNVU664 – November 2019 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated... -
Page 9: Evm Mid Layer One
Board Layout www.ti.com Figure 11. EVM Mid Layer One Figure 12. EVM Mid Layer Two SNVU664 – November 2019 LMR33640EVM User's Guide Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated... -
Page 10: Evm Bottom Copper Layer
Board Layout www.ti.com Figure 13. EVM Bottom Copper Layer LMR33640EVM User's Guide SNVU664 – November 2019 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated... -
Page 11: Bill Of Materials
Bill of Materials www.ti.com Bill of Materials Table 2. BOM for LMR33640EVM DESIGNATOR IDENTIFIER DESCRIPTION MANUFACTURER PART NUMBER Cblk CAP, AL, 100 µF, 50 V, ±20%, SMD Chemi-Con EMVA500ADA101MHA0G CAP, CERM, 10 µF, 50 V, ±10%, X5R, Samsung CL31A106KBHNNNE 1206_190 CAP, CERM, 0.22 µF, 50 V, ±10%,... - Page 12 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 13 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 14 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 15 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 16 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 17 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2019, Texas Instruments Incorporated...
Need help?
Do you have a question about the LMR33640EVM and is the answer not in the manual?
Questions and answers