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Using the TPS53819AEVM-123 Wide Input Voltage,
Eco-mode, Single Synchronous Step-Down Controller
The TPS53819AEVM-123 evaluation module (EVM) is designed to evaluate the TPS53819A. The
TPS53819A is a small-size single-buck controller with adaptive on-time D-CAP2 mode control. It provides
a fixed 1.2-V output at up to 25 A from a nominal 12-V input bus. This controller is an analog PWM
controller allowing programming and monitoring via the PMBus interface. The TPS53819AEVM-123 also
uses a 5 mm × 6 mm TI power block MOSFET (CSD87350Q5D) for high power density and superior
thermal performance.
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SLVU719A - May 2012 - Revised December 2012
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Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single
Copyright © 2012, Texas Instruments Incorporated
SLVU719A - May 2012 - Revised December 2012
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Synchronous Step-Down Controller with PMBus™
User's Guide
with PMBus™
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Table of Contents
Related Manuals for Texas Instruments TPS53819AEVM-123
Summary of Contents for Texas Instruments TPS53819AEVM-123
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Page 1: Table Of Contents
Eco-mode, Single Synchronous Step-Down Controller with PMBus™ The TPS53819AEVM-123 evaluation module (EVM) is designed to evaluate the TPS53819A. The TPS53819A is a small-size single-buck controller with adaptive on-time D-CAP2 mode control. It provides a fixed 1.2-V output at up to 25 A from a nominal 12-V input bus. This controller is an analog PWM controller allowing programming and monitoring via the PMBus interface. -
Page 2: Contents 1 Description
TPS53819AEVM-123 List of Materials Description The TPS53819AEVM-123 is designed to use a regulated 12-V bus to produce a regulated 1.2-V output at up to 25 A of load current. The TPS53819AEVM-123 is designed to demonstrate the TPS53819A in a typical low voltage application while providing a number of test points to evaluate the performance of the TPS53819A. -
Page 3: Typical Applications
Operating temperature ºC This design uses TI Default PMBus settings SLVU719A – May 2012 – Revised December 2012 Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single Synchronous Step-Down Controller with PMBus™ Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 4: Schematic
VOUT 10.0k TP13 TP12 LOOPA 10.0k Figure 1. TPS53819AEVM-123 Schematic Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single SLVU719A – May 2012 – Revised December 2012 Synchronous Step-Down Controller with PMBus™ Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 5: Test Setup
3. To measure other waveforms, adjust the oscilloscope as needed. SLVU719A – May 2012 – Revised December 2012 Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single Synchronous Step-Down Controller with PMBus™ Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 6: Tip And Barrel Measurement For
Exercise caution when touching the EVM while the fan is not running and always exercise caution when touching any circuits that may be live or energized. Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single SLVU719A – May 2012 – Revised December 2012 Synchronous Step-Down Controller with PMBus™... -
Page 7: Recommended Test Setup
Recommended Test Setup Figure 4 is the recommended test set up to evaluate the TPS53819AEVM-123. Working at an ESD workstation, make sure that any wrist straps, bootstraps or mats are connected referencing the user to earth ground before power is applied to the EVM. -
Page 8: Jumper Configuration: Enable Selection
EVM. Consult the TPS53819A datasheet for guidance in configuration of parameters and impact on component selection. Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single SLVU719A – May 2012 – Revised December 2012 Synchronous Step-Down Controller with PMBus™... -
Page 9: Default Fusion Gui Screenshots And Description
The USB adapter settings are found in the File menu of the Digital Fusion GUI. Figure 6. TPS53819A GUI Configure General Tab SLVU719A – May 2012 – Revised December 2012 Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single Synchronous Step-Down Controller with PMBus™ Submit Documentation Feedback... -
Page 10: Tps53819A Gui Configure, All Config Tab
EVM Configuration Using the Fusion GUI www.ti.com Figure 7. TPS53819A GUI Configure, All Config Tab Figure 8. TPS53819A GUI Status Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single SLVU719A – May 2012 – Revised December 2012 Synchronous Step-Down Controller with PMBus™ Submit Documentation Feedback... -
Page 11: Test Procedure
11. Decrease V to 0 V. Control Loop Gain and Phase Measurement Procedure TPS53819AEVM-123 contains a place holder for a 10-Ω series resistor in the feedback loop for loop response analysis. 1. Replace R16 with a 10-Ω resistor. 2. Set up EVM as described in... -
Page 12: Performance Data And Typical Characteristic Curves
FCCM Output Current (A) G000 Figure 10. TPS53819AEVM-123 Load Regulation Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single SLVU719A – May 2012 – Revised December 2012 Synchronous Step-Down Controller with PMBus™ Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 13: Line Regulation
Input Voltage (V) G000 Figure 12. TPS53819AEVM-123 f Versus Load SLVU719A – May 2012 – Revised December 2012 Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single Synchronous Step-Down Controller with PMBus™ Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 14: Bode Plot
−180 1000 10000 100000 1000000 Frequency (Hz) G000 Figure 13. TPS53819AEVM-123 Loop Response Gain and Phase Transient Response IOUT VOUT AC Figure 14. TPS53819AEVM-123 Load Transient, 12 V , 0–15-A Eco-mode Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single SLVU719A – May 2012 – Revised December 2012 Synchronous Step-Down Controller with PMBus™... -
Page 15: Output Ripple
Figure 16. TPS53819AEVM-123 Output Ripple, 12 V , 25 A SLVU719A – May 2012 – Revised December 2012 Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single Synchronous Step-Down Controller with PMBus™ Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 16: Switching Node
, 1-A Load Eco-mode Switching Node Figure 18. TPS53819AEVM-123 Switching Node, 12-V , 25-A Load Full Bandwidth Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single SLVU719A – May 2012 – Revised December 2012 Synchronous Step-Down Controller with PMBus™ Submit Documentation Feedback... -
Page 17: Turn On Waveform
Performance Data and Typical Characteristic Curves www.ti.com Turn On Waveform VREG VOUT Figure 19. TPS53819AEVM-123 Enable Turn on Waveform, 12-V , 1-Ω Load VREG VOUT Figure 20. TPS53819AEVM-123 V Turn on Waveform, 12-V , 1-Ω Load SLVU719A – May 2012 – Revised December 2012 Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single Synchronous Step-Down Controller with PMBus™... -
Page 18: 7.10 Turn Off Waveform
Performance Data and Typical Characteristic Curves www.ti.com 7.10 Turn Off Waveform VREG VOUT Figure 21. TPS53819AEVM-123 Enable Turn off Waveform, 12 V , 1-Ω Load VREG VOUT Figure 22. TPS53819AEVM-123 V Turn off Waveform, 12 V , 1-Ω Load Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single SLVU719A –... -
Page 19: 7.11 Pre-Bias Turn On Waveform
Performance Data and Typical Characteristic Curves www.ti.com 7.11 Pre-bias Turn On Waveform VREG VOUT Figure 23. TPS53819AEVM-123 Enable Turn on waveform, 12 V , 1-Ω Load, 1-V Pre-bias 7.12 Thermal Images NOTE: Hottest point is the CSD87350Q5D Figure 24. TPS53819AEVM-123 Top Board, 12 V , 25-A Fan SLVU719A –... -
Page 20: Tps53819Aevm-123 Bottom Board
NOTE: Hottest point is below the CSD87350Q5D Figure 25. TPS53819AEVM-123 Bottom Board, 12 V , 25-A Fan Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single SLVU719A – May 2012 – Revised December 2012 Synchronous Step-Down Controller with PMBus™ Submit Documentation Feedback... -
Page 21: Evm Assembly Drawing And Pcb Layout
Figure 26 through Figure 33 show the design of the TPS53819AEVM-123 printed-circuit board (PCB). The EVM has been designed using 6 layers, 2-oz copper circuit board. Figure 26. TPS53819AEVM-123 Top Layer Assembly Drawing (Top view) Figure 27. TPS53819AEVM-123 Bottom Layer Assembly Drawing (Bottom view) SLVU719A –... -
Page 22: Tps53819Aevm-123 Top Copper (Top View)
EVM Assembly Drawing and PCB layout www.ti.com Figure 28. TPS53819AEVM-123 Top Copper (Top view) Figure 29. TPS53819AEVM-123 Internal Layer 1 (Top view) Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single SLVU719A – May 2012 – Revised December 2012 Synchronous Step-Down Controller with PMBus™... -
Page 23: Tps53819Aevm-123 Internal Layer 3 (Top View)
EVM Assembly Drawing and PCB layout www.ti.com Figure 30. TPS53819AEVM-123 Internal Layer 3 (Top view) Figure 31. TPS53819AEVM-123 Internal Layer 4 (Top view) SLVU719A – May 2012 – Revised December 2012 Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single Synchronous Step-Down Controller with PMBus™... -
Page 24: Tps53819Aevm-123 Internal Layer 5 (Top View)
EVM Assembly Drawing and PCB layout www.ti.com Figure 32. TPS53819AEVM-123 Internal Layer 5 (Top view) Figure 33. TPS53819AEVM-123 Bottom Copper (Top view) Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single SLVU719A – May 2012 – Revised December 2012 Synchronous Step-Down Controller with PMBus™... -
Page 25: Bill Of Materials
Keystone — STANDOFF M/F HEX 4-40 NYL 1.00"L 4806 Keystone SLVU719A – May 2012 – Revised December 2012 Using the TPS53819AEVM-123 Wide Input Voltage, Eco-mode, Single Synchronous Step-Down Controller with PMBus™ Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... - Page 26 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 27 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 28 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, Shinjuku-ku, Tokyo, Japan http://www.tij.co.jp...
- Page 29 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...
- Page 30 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.
- Page 31 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TPS53819AEVM-123...
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