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This user's guide describes the characteristics, operation, and use of the TPS62290EVM-279 evaluation
module (EVM). This EVM demonstrates the Texas Instruments TPS62290, 2.25-MHz, synchronous,
step-down converter capable of providing 1 A of output current. 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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Setup
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Operation
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Output Voltage Ripple, Vin=3 V, Vout=1.8 V, Iload=1000 mA
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Load Transient, 460-mA to 920-mA Step, Vin=3 V, Vout=1.8 V
4
Load Transient, 920-mA to 460-mA Step
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SLVU217 - July 2007
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TPS62290EVM-279
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User's Guide
SLVU217 - July 2007
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TPS62290EVM-279
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Summary of Contents for Texas Instruments TPS62290EVM-279
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Page 1: Table Of Contents
SLVU217 – July 2007 TPS62290EVM-279 This user’s guide describes the characteristics, operation, and use of the TPS62290EVM-279 evaluation module (EVM). This EVM demonstrates the Texas Instruments TPS62290, 2.25-MHz, synchronous, step-down converter capable of providing 1 A of output current. This user’s guide includes setup instructions, a schematic diagram, a bill of materials (BOM), and PCB layout drawings for the evaluation module. -
Page 2: Related Documentation From Texas Instruments
TPS62290EVM-279 has an absolute maximum input voltage of 7 V. The recommended maximum operating voltage is 6 V. Connect the desired load between J3 and J4. The TPS62290EVM-279 can supply up to 1 A of output current. Configure jumpers JP1 and JP2 as required. The functions of JP1 and JP2 are described in the Set-up section of this manual. -
Page 3: Test Results
Test Results Test Results This section provides typical performance waveforms for the TPS62290EVM-279 printed-circuit board. Enable LOAD Figure 1. Start-up From Enable, Vin=3 V, Vout=1.8 V, Iload=1000 mA INDUCTOR Figure 2. Output Voltage Ripple, Vin=3 V, Vout=1.8 V, Iload=1000 mA SLVU217 –... - Page 4 Test Results 920 mA LOAD 460 mA Figure 3. Load Transient, 460-mA to 920-mA Step, Vin=3 V, Vout=1.8 V LOAD 920 mA 460 mA Figure 4. Load Transient, 920-mA to 460-mA Step TPS62290EVM-279 SLVU217 – July 2007 Submit Documentation Feedback...
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Page 5: Board Layout
Figure 7 show the board layout for the TPS62290EVM-279 PCB. 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. See the data sheet for specific layout guidelines. -
Page 6: Top Layer Routing
Board Layout Figure 6. Top Layer Routing Figure 7. Bottom Layer Routing TPS62290EVM-279 SLVU217 – July 2007 Submit Documentation Feedback... -
Page 7: Schematic And Bill Of Materials
Schematic and Bill of Materials Schematic and Bill of Materials This section provides the TPS62290EVM-279 schematic and bill of materials. Schematic Figure 8. TPS62290EVM-279 Layer Routing Schematic SLVU217 – July 2007 TPS62290EVM-279 Submit Documentation Feedback... -
Page 8: Tps62290Evm-279 Bill Of Materials
Schematic and Bill of Materials Bill of Materials Table 1. TPS62290EVM-279 Bill of Materials Count ReDes Value Description Size Part Number C1, C3 10 μF Capacitor, Ceramic, 6.3V, X5R, 20% 0603 GRM188R60J106ME47D Murata 22 pF Capacitor, Ceramic, 50V, C0G, 5%... -
Page 9: Evaluation Board/Kit Important Notice
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 10: Important Notice
TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products... -
Page 11: Texas Instruments
Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TPS62290EVM-279...
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