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This user's guide describes the characteristics, operation, and use of the Texas Instruments TPS62125
evaluation module (EVM). This EVM is designed to help the user easily evaluate and test the operation
and functionality of the TPS62125. The EVM converts a 4-V to 17-V input voltage to a regulated 3.3-V
output voltage that delivers 300 mA. This user's guide includes setup instructions for the hardware,
printed-circuit board layouts for the EVM, a schematic diagram, a bill of materials, and test results for the
EVM.
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SLVU659A - March 2012 - Revised March 2012
Submit Documentation Feedback
TPS62125EVM-044 Evaluation Module
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Copyright © 2012, Texas Instruments Incorporated
SLVU659A - March 2012 - Revised March 2012
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Summary of Contents for Texas Instruments TPS62125EVM-044
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Page 1: Table Of Contents
SLVU659A – March 2012 – Revised March 2012 TPS62125EVM-044 Evaluation Module This user’s guide describes the characteristics, operation, and use of the Texas Instruments TPS62125 evaluation module (EVM). This EVM is designed to help the user easily evaluate and test the operation and functionality of the TPS62125. -
Page 2: Introduction
In the TPS62125EVM-044, the device is set to turn on at 6 V and turn off at 4 V. This feature can be bypassed by using jumper JP1, which overrides the programmed threshold voltages. -
Page 3: Tps62125Evm-044 Test Results
To operate the EVM, set jumpers JP1 through JP2 to the desired positions per Section 2.1. Connect the input supply to J1 and J3 and connect the load to J4 and J6. TPS62125EVM-044 Test Results This section provides test results of the TPS62125EVM-044. = 5 V = 17 V = 12 V 0.01... -
Page 4: Load Regulation
-150 -180 100k Frequency - Hz Figure 4. Loop Response With Vin = 12 V and Iout = 250 mA TPS62125EVM-044 Evaluation Module SLVU659A – March 2012 – Revised March 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 5: Input Voltage Ripple With Vin = 12 V And Iout = 250 Ma
- Time - 500 ns/div Figure 6. Output Voltage Ripple With Vin = 12 V and Iout = 250 mA SLVU659A – March 2012 – Revised March 2012 TPS62125EVM-044 Evaluation Module Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 6: Load Transient Response With Vin = 12 V
Vout 1 V/div PG 2 V/div t - Time - 100 s/div Figure 8. Start-Up on Vin With 250-mA Load TPS62125EVM-044 Evaluation Module SLVU659A – March 2012 – Revised March 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 7: Start-Up On En With 250-Ma Load
Vout 1 V/div PG 2 V/div t - Time - 100 s/div Figure 10. Shutdown on EN With 250-mA Load SLVU659A – March 2012 – Revised March 2012 TPS62125EVM-044 Evaluation Module Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 8: Prebias Start-Up And Shutdown On En With 250-Ma Load
Figure 11. Prebias Start-Up and Shutdown on EN With 250-mA Load Figure 12. Thermal Performance With Vin = 12 V and Iout = 250 mA TPS62125EVM-044 Evaluation Module SLVU659A – March 2012 – Revised March 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 9: Board Layout
Board Layout www.ti.com Board Layout This section provides the TPS62125EVM-044 board layout and illustrations. Figure 13. Top Silk Layer Figure 14. Top Layer SLVU659A – March 2012 – Revised March 2012 TPS62125EVM-044 Evaluation Module Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 10: Bottom Layer
Board Layout www.ti.com Figure 15. Bottom Layer Figure 16. Top Assembly Layer TPS62125EVM-044 Evaluation Module SLVU659A – March 2012 – Revised March 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 11: Schematic And Bill Of Materials
Schematic and Bill of Materials www.ti.com Schematic and Bill of Materials This section provides the TPS62125EVM-044 schematic and bill of materials. Schematic Figure 17. TPS62125EVM-044 Schematic SLVU659A – March 2012 – Revised March 2012 TPS62125EVM-044 Evaluation Module Submit Documentation Feedback... -
Page 12: Tps62125Evm-044 Bill Of Materials
TPS62125DSG Threshold and Hysteresis The TPS62125EVM-044 may be populated with TPS62125 (U1) devices that do not contain the correct top side markings on the top of the device itself. These devices are still fully tested TPS62125 devices and meet the specified electrical characteristics in the datasheet. - Page 13 Any exceptions to this are strictly prohibited and unauthorized by Texas Instruments unless user has obtained appropriate experimental/development licenses from local regulatory authorities, which is responsibility of user including its acceptable authorization.
- Page 14 FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
- Page 15 Also, please do not transfer this product, unless you give the same notice above to the transferee. Please note that if you could not follow the instructions above, you will be subject to penalties of Radio Law of Japan. Texas Instruments Japan Limited (address) 24-1, Nishi-Shinjuku 6 chome, Shinjukku-ku, Tokyo, Japan http://www.tij.co.jp...
- Page 16 FDA Class III or similar classification, then you must specifically notify TI of such intent and enter into a separate Assurance and Indemnity Agreement. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2012, Texas Instruments Incorporated...
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Page 17: Important Notice
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 18 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TPS62125EVM-044...
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