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The TPS6227xEVM-306 user's guide describes the characteristics, operation, and use of the
TPS6227xEVM-306 evaluation module (EVM). This EVM demonstrates the Texas Instruments TPS62270,
a 2.25 MHz, synchronous step-down converter that provides up to 400 mA of output current. See the
TPS62270 data sheet (SLVS799), 2.25 MHz 400-mA Step Down Converter With Selectable VOUT for
device specifications and recommended operating conditions. This user's guide includes setup
instructions, a schematic diagram, a bill of materials (BOM), and PCB layout drawings for the evaluation
module.
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Introduction
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Schematic
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Introduction
The TPS6227xEVM-306 EVM helps designers evaluate the operation and performance of the TPS62270
DC/DC converter. This converter is a 2.25 MHz, synchronous, step-down converter capable of providing
400 mA of output current.
Related Documentation From Texas Instruments
TPS62270 data sheet (SLVS799), 2.25 MHz 400-mA Step Down Converter With Selectable VOUT.
SLVU234 - February 2008
Submit Documentation Feedback
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= 3.6 V, VOUT = 1.15 V, R
I
= 3.6 V, VOUT = 0.9 V, R
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= 3.6 V, R
I
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Contents
List of Figures
= 2.5 Ω
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Load
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= 3.6 V, VOUT = 1.15 V
I
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= 3.6 V, VOUT = 1.15 V
I
= 2.5 Ω
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Load
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= 3.6 V, VOUT = 0.9 V
I
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= 3.6 V, VOUT = 0.9 V
I
= 3.3 Ω
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Load
List of Tables
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User's Guide
SLVU234 - February 2008
TPS6227xEVM-306
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Table of Contents
Related Manuals for Texas Instruments TPS6227xEVM-306
Summary of Contents for Texas Instruments TPS6227xEVM-306
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Page 1: Table Of Contents
..................TPS6227XEVM-306 Bill of Materials Introduction The TPS6227xEVM-306 EVM helps designers evaluate the operation and performance of the TPS62270 DC/DC converter. This converter is a 2.25 MHz, synchronous, step-down converter capable of providing 400 mA of output current. Related Documentation From Texas Instruments TPS62270 data sheet (SLVS799), 2.25 MHz 400-mA Step Down Converter With Selectable VOUT. -
Page 2: Setup
TPS6227XEVM-306 has an absolute maximum input voltage of 7.0 V. The recommended maximum operating voltage is 6.0 V. Connect the desired load between J3 and J4. The TPS6227XEVM-306 can supply up to 400 mA of output current. Configure Jumpers JP1 and JP2 according to TPS6227xEVM-306 Jumpers and Connections (Table and as required for your application. -
Page 3: Test Results
Test Results Test Results This section provides typical performance waveforms (Figure 1 through Figure 7) using the TPS6227XEVM-306 printed circuit board. 2 V/div ENABLE 1.15 V 500 mV/div VOUT V = 3.6 V, = 2.5 Load 100 s/div = 2.5 Ω... -
Page 4: Start Up From Enable
0.9 V 500 mV/div VOUT V = 3.6 V, = 2.5 Load 100 s/div = 2.5 Ω Figure 4. Start up from Enable, V = 3.6 V, VOUT = 0.9 V, R Load TPS6227xEVM-306 SLVU234 – February 2008 Submit Documentation Feedback... -
Page 5: Load Transient, 90 Ma To 272 Ma Step
VOUT = 0.9 V 20 mV/div 272 mA Load Current 90 mA 100 mA/div 5 s/div Figure 6. Load Transient, 272 mA to 90 mA step, V = 3.6 V, VOUT = 0.9 V SLVU234 – February 2008 TPS6227xEVM-306 Submit Documentation Feedback... -
Page 6: Board Layout
Figure 10 show the board layout for the TPS6227XEVM-306 printed wire board (PWB). The nodes with high switching frequencies and currents are kept as short as possible to minimize trace inductance. Careful attention has been given to the routing of high frequency current loops and a single point grounding scheme is used. -
Page 7: Assembly Layer
Board Layout Figure 8. Assembly Layer Figure 9. Top Layer Routing SLVU234 – February 2008 TPS6227xEVM-306 Submit Documentation Feedback... -
Page 8: Schematic And Bill Of Materials
Schematic and Bill of Materials Figure 10. Bottom Layer Routing Schematic and Bill of Materials This section provides the TPS6227XEVM-306 schematic and bill of materials. Schematic Figure 11. TPS6227XEVM-306 Schematic TPS6227xEVM-306 SLVU234 – February 2008 Submit Documentation Feedback... -
Page 9: Bill Of Materials
Schematic and Bill of Materials Bill of Materials (1) (2) (3) (4) Table 2. TPS6227XEVM-306 Bill of Materials Referen Count Value Description Size Part Number Descrip tion Capacitor, Ceramic, 6.3 V, 10 µF C1, C2 0603 GRM188R60J106ME47D muRata X5R, 20%... - Page 10 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
- Page 11 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
- Page 12 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TPS62270EVM-306...
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