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Summary of Contents for Texas Instruments PWR091EVM
- Page 1 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface User's Guide Literature Number: SLVU638 January 2012...
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Page 2: Table Of Contents
HDRV and Switch Node Voltage ...................... Turnon Waveform ................EVM Assembly Drawing and PCB Layout ......................... Bill of Materials ........................Screen Shots ..................... 10.1 Fusion GUI Screen Shots SLVU638 – January 2012 Table of Contents Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... - Page 3 Turnon Waveform of 3.3-V Output at 8-V, 12-V, and 14-V Input, 15-A Output ....Turnon Waveform of 3.3-V Output With 2-V Prebias, at 8-V, 12-V, and 14-V Input, 0-A Output ............PWR091EVM Top Layer Assembly Drawing (Top View) ............PWR091EVM Bottom Assembly Drawing (Bottom View) .................
- Page 4 Data Logging Details ........................Data Log ....................... Data Log File ......................PMBus Logging ......................PMBus Log Details ......................... PMBus Log ......................PMBus Log File SLVU638 – January 2012 List of Figures Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated...
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Page 5: List Of Tables
Key Factory Configuration Parameters ............... List of Test Points for Loop Response Measurements ..............List of Test Points for Efficiency Measurements ....................PWR091 Bill of Materials SLVU638 – January 2012 List of Tables Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 6: Description
Description The PWR091EVM is designed as a dual-output converter. It uses a nominal 12-V bus to produce a regulated 1.2-V output at up to 20 A of load current, and a regulated 3.3-V output at up to 15 A of load current. -
Page 7: Electrical Performance Specifications
= 8 V, I = 8.5 A, V disabled, F = 300 kHz OUT2 OUT1 Operating temperature ºC oper SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 8: Schematic
Schematic www.ti.com Schematic Figure 1. PWR091EVM Schematic SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 9: Test Setup
The Fusion Digital Power Designer is the graphical user interface (GUI) used to configure and monitor the Texas Instruments TPS40422 power controller on this evaluation module. The application uses the PMBus protocol to communicate with the controller over serial bus by way of a TI USB adapter (see Figure 4.1.2... -
Page 10: Recommended Test Setup
As an example, if AWG 12 wire is used, no more than 3.15 feet of wire must be used between the EVM and the load. Recommended Test Setup Figure 2. PWR091EVM Recommended Test Setup SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 11: Usb Interface Adapter And Cable
Figure 3. Texas Instruments USB-to-GPIO Adapter and Connections Figure 4. Tip and Barrel Measurement List of Test Points SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... - Page 12 Vout+ measurement point for efficiency of Vout 2. TP27 Copper Dot VOUT1 Vout+ measurement point for efficiency of Vout 1. SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated...
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Page 13: Evm Configuration Using The Fusion Gui
3. Launch the Fusion GUI software. See the screen shots in Section 10 for more information. 4. Configure the EVM operating parameters as desired. SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 14: Test Procedure
Control Loop Gain and Phase Measurement Procedure The PWR091EVM includes a 49.9-Ω series resistor in the feedback loop for both Vout1 and Vout2. These resistors are used for loop response analysis and are accessible at the test points TP8 and TP9 for Vout1, and TP10 and TP12 for Vout2. -
Page 15: Efficiency
Performance Data and Typical Characteristic Curves Figure 5 through Figure 25 present typical performance curves for the PWR091EVM. SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 16: Efficiency
14 15 I - Output Current - A Figure 6. Efficiency of 3.3-V Output vs Line and Load SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 17: Load Regulation
3.324 3.323 3.322 14 15 I - Output Current - A Figure 8. Load Regulation of 3.3-V Output SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 18: Bode Plot
14 V Gain 100k f - Frequency - Hz Figure 10. Bode Plot of 3.3-V Output at 10-A Load SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 19: Transient Response
Figure 12. Transient Response of 1.2-V Output at 12 Vin, Transient is 5 A to 11 A to 5 A SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 20: Transient Response Of 3.3-V Output At 8 Vin, Transient Is 5 A To 9 A To 5 A
Figure 14. Transient Response of 3.3-V Output at 12 Vin, Transient is 5 A to 9 A to 5 A SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 21: Output Ripple
Ch1 = Vout1 at 20mV/division, Ch2 = SW Node at 10V/division Figure 16. Output Ripple and SW Node of 1.2-V Output at 12 Vin, 20-A Output SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 22: Output Ripple And Sw Node Of 3.3-V Output At 8 Vin, 15-A Output
Ch1 = Vout2 at 20mV/division, Ch2 = SW Node at 10V/division Figure 18. Output Ripple and SW Node of 3.3-V Output at 12 Vin, 15-A Output SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 23: Hdrv And Switch Node Voltage
Ch1 = SW Node at 5 V/division, Ch2 = HDRV at 5 V/division Figure 21. HDRV and SW Node of 3.3-V Output at 8-Vin, 15-A Output SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 24: Turnon Waveform
Figure 24. Turnon Waveform of 1.2-V Output With 0.5-V Prebias, at 8-V, 12-V and 14-V Input, 0-A Output SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 25: Evm Assembly Drawing And Pcb Layout
EVM Assembly Drawing and PCB Layout Figure 27 through Figure 32 show the design of the PWR091EVM printed-circuit board (PCB). SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 26: Pwr091Evm Top Layer Assembly Drawing (Top View)
EVM Assembly Drawing and PCB Layout www.ti.com Figure 27. PWR091EVM Top Layer Assembly Drawing (Top View) SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 27: Pwr091Evm Bottom Assembly Drawing (Bottom View)
EVM Assembly Drawing and PCB Layout www.ti.com Figure 28. PWR091EVM Bottom Assembly Drawing (Bottom View) SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 28: Pwr091Evm Top Copper (Top View)
EVM Assembly Drawing and PCB Layout www.ti.com Figure 29. PWR091EVM Top Copper (Top View) SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 29: Pwr091Evm Internal Layer 1 (Top View)
EVM Assembly Drawing and PCB Layout www.ti.com Figure 30. PWR091EVM Internal Layer 1 (Top View) SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 30: Pwr091Evm Internal Layer 2 (Top View)
EVM Assembly Drawing and PCB Layout www.ti.com Figure 31. PWR091EVM Internal Layer 2 (Top View) SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 31: Pwr091Evm Bottom Copper (Bottom View)
EVM Assembly Drawing and PCB Layout www.ti.com Figure 32. PWR091EVM Bottom Copper (Bottom View) SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 32: Bill Of Materials
MMBT3904, Bipolar, NPN, 40V, 200mA, 200mW, SC-75 On Semi MMBT3904TT1G PCB, FR-4, 0.062, 2oz Copper all layers., 4.00" x 4.00" SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 33: Screen Shots
Figure 33. First Window at Fusion Launch Device Found Figure 34. Scan Finds Device Successfully Figure 35. Software Launch Continued SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 34: Software Launch Continued
Figure 37. First Screen After Successful Launch: Configure- Limits & On/Off Use this screen to configure (Figure 38) : • Vref Trim SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 35: Configure- Other
Figure 39. Configure- All Changing the On/Off Config prompts a pop-up window with details of the options Figure 40). SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 36: Configure- Limits And On/Off- On/Off Config Pop-Up
When Store User Defaults is selected, change is committed to nonvolatile memory and becomes the new default (Figure 41). Figure 41. Configure- Limits and On/Off- On/Off Config Pop-up SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 37: Configure- Other- Iout Cal Gain Change
On/Off Config can also be configured from the All Config screen, and the same process applies (Figure 43). Figure 43. Configure- All Config- On/Off Config Pop-up SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 38: Configure- Store User Defaults
A scroll-down menu in the upper right corner can be selected to change the view screens to one output rail or the other(Figure 45). Figure 45. Change Screens to Other Vout Rail SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 39: Change View Screen To Monitor Screen
At first GUI launch, Faults may occur due to communications during power up. These faults can be cleared once the device is enabled. SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 40: Monitor Screen
Selecting System Dashboard from mid-left screen adds a new window which displays system-level information (Figure 48). Figure 48. System Dashboard SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 41: Display Change On Power Up
Selecting Clear Faults clears any prior fault flags. Scrolling time window of Vout still shows the turnon event (Figure 50). Figure 50. Faults Cleared SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 42: Status Screen
This action results in a browse-type sequence where the desired config file can be located and loaded (Figure 52). Figure 52. Import Project / Import Configuration File SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 43: Store Config To Memory
See next screen (Figure 55). Figure 54. Data Logging SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 44: Data Logging Details
Common contents of the data log. As shown (Figure 57), the UUT had been disabled, and both rails were off . SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 45: Data Log File
See next screen (Figure 59). Figure 58. PMBus Logging SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 46: Pmbus Log Details
Common contents of the PMBus log. As shown (Figure 61), the UUT had been disabled, and both rails were off. SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 47: Pmbus Log File
Screen Shots www.ti.com Figure 61. PMBus Log File SLVU638 – January 2012 Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 48: 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 49: Evaluation Board/Kit/Module (Evm) Additional Terms
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 50 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 51 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...
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Page 52: Evaluation Board/Kit/Module (Evm) Warnings, Restrictions And Disclaimers
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 53: Important Notice
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 54: Texas Instruments
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